Abstract

We generate a bright atomic beam containing laser-cooled rubidium and cesium, and we use this beam to load a mixed-species ultrahigh-vacuum (UHV) magneto-optical trap. We have characterized our two-species atomic beam over a range of operating conditions, and we obtain similar atom fluxes for each species. Within the UHV trap, interspecies inelastic collisions are observed in the form of enhanced decay rates of a given species in the presence of a second trapped species. We analyze the trap decays to obtain a loss rate due to heteronuclear cold collisions, and we compare our result to similar measurements in vapor-cell traps [Phys. Rev. A 63, 033406 (2001)].

© 2004 Optical Society of America

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  1. M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
    [CrossRef] [PubMed]
  2. G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
    [CrossRef]
  3. J. P. Shaffer, W. Chalupczak, and N. P. Bigelow, “Trap loss in a two-species Na–Cs magneto-optical trap: Intramultiplet mixing in heteronuclear ultracold collisions,” Phys. Rev. A 60, R3365–R3368 (1999).
    [CrossRef]
  4. U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
    [CrossRef]
  5. Y. E. Young, R. Ejnisman, J. P. Shaffer, and N. P. Bigelow, “Heteronuclear hyperfine-state-changing cold collisions,” Phys. Rev. A 62, 055403 (2000).
    [CrossRef]
  6. L. G. Marcassa, G. D. Telles, S. R. Muniz, and V. S. Bagnato, “Collisional losses in a K-Rb cold mixture,” Phys. Rev. A 63, 013413 (2001).
    [CrossRef]
  7. G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
    [CrossRef]
  8. J. Goldwin, S. B. Papp, B. DeMarco, and D. S. Jin, “Two-species magneto-optical trap with 40K and 87Rb,” Phys. Rev. A 65, 021402(R) (2002).
    [CrossRef]
  9. A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
    [CrossRef] [PubMed]
  10. B. DeMarco and D. S. Jin, “Onset of Fermi degeneracy in a trapped atomic gas,” Science 285, 1703–1706 (1999).
    [CrossRef] [PubMed]
  11. R. Onofrio and C. Presilla, “Reaching Fermi degeneracy in two-species optical dipole traps,” Phys. Rev. Lett. 89, 100401 (2002).
    [CrossRef] [PubMed]
  12. Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
    [CrossRef] [PubMed]
  13. G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
    [CrossRef] [PubMed]
  14. B. C. Regan, E. D. Commins, C. J. Schmidt, and D. DeMille, “New limit on the electron electric dipole moment,” Phys. Rev. Lett. 88, 071805 (2002).
    [CrossRef] [PubMed]
  15. D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
    [CrossRef] [PubMed]
  16. J. Weiner, V. S. Bagnato, S. Zilio, and P. S. Julienne, “Experiments and theory in cold and ultracold collisions,” Rev. Mod. Phys. 71, 1–85 (1999).
    [CrossRef]
  17. K. I. Lee, J. A. Kim, H. R. Noh, and W. Jhe, “Single beam atom trap in a pyramidal and conical hollow mirror,” Opt. Lett. 21, 1177–1179 (1996).
    [CrossRef] [PubMed]
  18. J. Kohel, J. Ramirez-Serrano, R. J. Thompson, L. Maleki, J. L. Bliss, and K. G. Libbrecht, “Generation of an intense cold atom beam from a pyramidal magneto-optical trap: Experiment and simulation,” J. Opt. Soc. Am. B 20, 1161–1168 (2003).
    [CrossRef]
  19. Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
    [CrossRef] [PubMed]
  20. Detailed Monte-Carlo simulations of the CAB-loaded UHV MOT predict that the capture efficiency of cold atoms from the atomic beam by the UHV MOT is approximately 70 percent; this efficiency is limited primarily by the small (1 cm) diameter for the trapping laser beams.
  21. J. Ramirez-Serrano, W. DeGraffenreid, and J. Weiner, “Polarization-dependent spectra in the photoassociative ionization of cold atoms in a bright sodium beam,” Phys. Rev. A 65, 052719 (2002).
    [CrossRef]
  22. J. Ramirez-Serrano, W. DeGraffenreid, J. Weiner, E. Tiesinga, and P. Julienne, “Beamloss spectroscopy of cold collisions in a bright sodium beam,” Phys. Rev. A (to be published).
  23. D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
    [CrossRef] [PubMed]
  24. While the primary focus of Ref. 7 was the study of Rb trap losses from cold collisions with Cs, the authors mention that they also measured a value for βCs-Rb that was twenty times lower than the corresponding value for βRb-Cs. We are uncertain as to whether this result is actually inconsistent with ours, as the trap parameters were not specified for their measurement.
  25. See http://funphysics.jpl.nasa.gov/technical/library/pi-list.html.

2003 (1)

2002 (6)

J. Ramirez-Serrano, W. DeGraffenreid, and J. Weiner, “Polarization-dependent spectra in the photoassociative ionization of cold atoms in a bright sodium beam,” Phys. Rev. A 65, 052719 (2002).
[CrossRef]

R. Onofrio and C. Presilla, “Reaching Fermi degeneracy in two-species optical dipole traps,” Phys. Rev. Lett. 89, 100401 (2002).
[CrossRef] [PubMed]

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

B. C. Regan, E. D. Commins, C. J. Schmidt, and D. DeMille, “New limit on the electron electric dipole moment,” Phys. Rev. Lett. 88, 071805 (2002).
[CrossRef] [PubMed]

J. Goldwin, S. B. Papp, B. DeMarco, and D. S. Jin, “Two-species magneto-optical trap with 40K and 87Rb,” Phys. Rev. A 65, 021402(R) (2002).
[CrossRef]

2001 (3)

A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
[CrossRef] [PubMed]

L. G. Marcassa, G. D. Telles, S. R. Muniz, and V. S. Bagnato, “Collisional losses in a K-Rb cold mixture,” Phys. Rev. A 63, 013413 (2001).
[CrossRef]

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

2000 (2)

Y. E. Young, R. Ejnisman, J. P. Shaffer, and N. P. Bigelow, “Heteronuclear hyperfine-state-changing cold collisions,” Phys. Rev. A 62, 055403 (2000).
[CrossRef]

D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
[CrossRef] [PubMed]

1999 (5)

J. Weiner, V. S. Bagnato, S. Zilio, and P. S. Julienne, “Experiments and theory in cold and ultracold collisions,” Rev. Mod. Phys. 71, 1–85 (1999).
[CrossRef]

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

J. P. Shaffer, W. Chalupczak, and N. P. Bigelow, “Trap loss in a two-species Na–Cs magneto-optical trap: Intramultiplet mixing in heteronuclear ultracold collisions,” Phys. Rev. A 60, R3365–R3368 (1999).
[CrossRef]

U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
[CrossRef]

B. DeMarco and D. S. Jin, “Onset of Fermi degeneracy in a trapped atomic gas,” Science 285, 1703–1706 (1999).
[CrossRef] [PubMed]

1996 (2)

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

K. I. Lee, J. A. Kim, H. R. Noh, and W. Jhe, “Single beam atom trap in a pyramidal and conical hollow mirror,” Opt. Lett. 21, 1177–1179 (1996).
[CrossRef] [PubMed]

1995 (1)

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

1989 (1)

D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
[CrossRef] [PubMed]

Anderson, M. H.

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

Antunes, A.

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

Arimondo, E.

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

Bagnato, V. S.

L. G. Marcassa, G. D. Telles, S. R. Muniz, and V. S. Bagnato, “Collisional losses in a K-Rb cold mixture,” Phys. Rev. A 63, 013413 (2001).
[CrossRef]

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

J. Weiner, V. S. Bagnato, S. Zilio, and P. S. Julienne, “Experiments and theory in cold and ultracold collisions,” Rev. Mod. Phys. 71, 1–85 (1999).
[CrossRef]

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

Bear, D.

D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
[CrossRef] [PubMed]

Bigelow, N. P.

Y. E. Young, R. Ejnisman, J. P. Shaffer, and N. P. Bigelow, “Heteronuclear hyperfine-state-changing cold collisions,” Phys. Rev. A 62, 055403 (2000).
[CrossRef]

J. P. Shaffer, W. Chalupczak, and N. P. Bigelow, “Trap loss in a two-species Na–Cs magneto-optical trap: Intramultiplet mixing in heteronuclear ultracold collisions,” Phys. Rev. A 60, R3365–R3368 (1999).
[CrossRef]

Bliss, J. L.

Brecha, R. J.

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

Chalupczak, W.

J. P. Shaffer, W. Chalupczak, and N. P. Bigelow, “Trap loss in a two-species Na–Cs magneto-optical trap: Intramultiplet mixing in heteronuclear ultracold collisions,” Phys. Rev. A 60, R3365–R3368 (1999).
[CrossRef]

Ciampini, D.

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

Commins, E. D.

B. C. Regan, E. D. Commins, C. J. Schmidt, and D. DeMille, “New limit on the electron electric dipole moment,” Phys. Rev. Lett. 88, 071805 (2002).
[CrossRef] [PubMed]

Cornell, E. A.

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

Corwin, K. L.

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

DeGraffenreid, W.

J. Ramirez-Serrano, W. DeGraffenreid, and J. Weiner, “Polarization-dependent spectra in the photoassociative ionization of cold atoms in a bright sodium beam,” Phys. Rev. A 65, 052719 (2002).
[CrossRef]

DeMarco, B.

J. Goldwin, S. B. Papp, B. DeMarco, and D. S. Jin, “Two-species magneto-optical trap with 40K and 87Rb,” Phys. Rev. A 65, 021402(R) (2002).
[CrossRef]

B. DeMarco and D. S. Jin, “Onset of Fermi degeneracy in a trapped atomic gas,” Science 285, 1703–1706 (1999).
[CrossRef] [PubMed]

DeMille, D.

B. C. Regan, E. D. Commins, C. J. Schmidt, and D. DeMille, “New limit on the electron electric dipole moment,” Phys. Rev. Lett. 88, 071805 (2002).
[CrossRef] [PubMed]

Dieckmann, K.

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Ejnisman, R.

Y. E. Young, R. Ejnisman, J. P. Shaffer, and N. P. Bigelow, “Heteronuclear hyperfine-state-changing cold collisions,” Phys. Rev. A 62, 055403 (2000).
[CrossRef]

Engler, H.

U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
[CrossRef]

Fazzi, M.

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

Ferlaino, F.

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

Flemming, J.

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

Gallagher, A.

D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
[CrossRef] [PubMed]

Garcia, W.

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

Goldwin, J.

J. Goldwin, S. B. Papp, B. DeMarco, and D. S. Jin, “Two-species magneto-optical trap with 40K and 87Rb,” Phys. Rev. A 65, 021402(R) (2002).
[CrossRef]

Görlitz, A.

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Grimm, R.

U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
[CrossRef]

Gupta, S.

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Hadzibabic, Z.

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Helmerson, K.

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

Hulet, R. G.

A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
[CrossRef] [PubMed]

Inguscio, M.

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

Jhe, W.

Jin, D. S.

J. Goldwin, S. B. Papp, B. DeMarco, and D. S. Jin, “Two-species magneto-optical trap with 40K and 87Rb,” Phys. Rev. A 65, 021402(R) (2002).
[CrossRef]

B. DeMarco and D. S. Jin, “Onset of Fermi degeneracy in a trapped atomic gas,” Science 285, 1703–1706 (1999).
[CrossRef] [PubMed]

Julienne, P. S.

J. Weiner, V. S. Bagnato, S. Zilio, and P. S. Julienne, “Experiments and theory in cold and ultracold collisions,” Rev. Mod. Phys. 71, 1–85 (1999).
[CrossRef]

Ketterle, W.

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Kim, J. A.

Kohel, J.

Kostelecký, V. A.

D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
[CrossRef] [PubMed]

Lane, C. D.

D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
[CrossRef] [PubMed]

Lee, K. I.

Libbrecht, K. G.

Lu, Z. T.

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

Maleki, L.

Marcassa, L. G.

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

L. G. Marcassa, G. D. Telles, S. R. Muniz, and V. S. Bagnato, “Collisional losses in a K-Rb cold mixture,” Phys. Rev. A 63, 013413 (2001).
[CrossRef]

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

McAlexander, W. I.

A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
[CrossRef] [PubMed]

Miranda, S. G.

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

Modugno, G.

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

Monroe, C.

D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
[CrossRef] [PubMed]

Müller, J. H.

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

Muniz, S. R.

L. G. Marcassa, G. D. Telles, S. R. Muniz, and V. S. Bagnato, “Collisional losses in a K-Rb cold mixture,” Phys. Rev. A 63, 013413 (2001).
[CrossRef]

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

Noh, H. R.

Nussenzveig, P.

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

Onofrio, R.

R. Onofrio and C. Presilla, “Reaching Fermi degeneracy in two-species optical dipole traps,” Phys. Rev. Lett. 89, 100401 (2002).
[CrossRef] [PubMed]

Papp, S. B.

J. Goldwin, S. B. Papp, B. DeMarco, and D. S. Jin, “Two-species magneto-optical trap with 40K and 87Rb,” Phys. Rev. A 65, 021402(R) (2002).
[CrossRef]

Partridge, G. B.

A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
[CrossRef] [PubMed]

Presilla, C.

R. Onofrio and C. Presilla, “Reaching Fermi degeneracy in two-species optical dipole traps,” Phys. Rev. Lett. 89, 100401 (2002).
[CrossRef] [PubMed]

Ramirez-Serrano, J.

J. Kohel, J. Ramirez-Serrano, R. J. Thompson, L. Maleki, J. L. Bliss, and K. G. Libbrecht, “Generation of an intense cold atom beam from a pyramidal magneto-optical trap: Experiment and simulation,” J. Opt. Soc. Am. B 20, 1161–1168 (2003).
[CrossRef]

J. Ramirez-Serrano, W. DeGraffenreid, and J. Weiner, “Polarization-dependent spectra in the photoassociative ionization of cold atoms in a bright sodium beam,” Phys. Rev. A 65, 052719 (2002).
[CrossRef]

Regan, B. C.

B. C. Regan, E. D. Commins, C. J. Schmidt, and D. DeMille, “New limit on the electron electric dipole moment,” Phys. Rev. Lett. 88, 071805 (2002).
[CrossRef] [PubMed]

Renn, M. J.

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

Riboli, F.

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

Roati, G.

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

Santos, M. S.

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

Schlöder, U.

U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
[CrossRef]

Schmidt, C. J.

B. C. Regan, E. D. Commins, C. J. Schmidt, and D. DeMille, “New limit on the electron electric dipole moment,” Phys. Rev. Lett. 88, 071805 (2002).
[CrossRef] [PubMed]

Schünemann, U.

U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
[CrossRef]

Sesko, D.

D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
[CrossRef] [PubMed]

Shaffer, J. P.

Y. E. Young, R. Ejnisman, J. P. Shaffer, and N. P. Bigelow, “Heteronuclear hyperfine-state-changing cold collisions,” Phys. Rev. A 62, 055403 (2000).
[CrossRef]

J. P. Shaffer, W. Chalupczak, and N. P. Bigelow, “Trap loss in a two-species Na–Cs magneto-optical trap: Intramultiplet mixing in heteronuclear ultracold collisions,” Phys. Rev. A 60, R3365–R3368 (1999).
[CrossRef]

Stan, C. A.

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Stoner, R. E.

D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
[CrossRef] [PubMed]

Strecker, K. E.

A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
[CrossRef] [PubMed]

Telles, G. D.

L. G. Marcassa, G. D. Telles, S. R. Muniz, and V. S. Bagnato, “Collisional losses in a K-Rb cold mixture,” Phys. Rev. A 63, 013413 (2001).
[CrossRef]

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

Thompson, R. J.

Truscott, A. G.

A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
[CrossRef] [PubMed]

Walker, T.

D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
[CrossRef] [PubMed]

Walsworth, R. L.

D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
[CrossRef] [PubMed]

Weidemüller, M.

U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
[CrossRef]

Weiner, J.

J. Ramirez-Serrano, W. DeGraffenreid, and J. Weiner, “Polarization-dependent spectra in the photoassociative ionization of cold atoms in a bright sodium beam,” Phys. Rev. A 65, 052719 (2002).
[CrossRef]

J. Weiner, V. S. Bagnato, S. Zilio, and P. S. Julienne, “Experiments and theory in cold and ultracold collisions,” Rev. Mod. Phys. 71, 1–85 (1999).
[CrossRef]

Westbrook, C.

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

Wieman, C.

D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
[CrossRef] [PubMed]

Wieman, C. E.

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

Wilkowski, D.

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

Young, Y. E.

Y. E. Young, R. Ejnisman, J. P. Shaffer, and N. P. Bigelow, “Heteronuclear hyperfine-state-changing cold collisions,” Phys. Rev. A 62, 055403 (2000).
[CrossRef]

Zilio, S.

J. Weiner, V. S. Bagnato, S. Zilio, and P. S. Julienne, “Experiments and theory in cold and ultracold collisions,” Rev. Mod. Phys. 71, 1–85 (1999).
[CrossRef]

Zilio, S. C.

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

Zwierlein, M. W.

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Eur. Phys. J. D (1)

U. Schlöder, H. Engler, U. Schünemann, R. Grimm, and M. Weidemüller, “Cold inelastic collisions between lithium and cesium in a two-species magneto-optical trap,” Eur. Phys. J. D 7, 331–340 (1999).
[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Lett. (1)

Phys. Rev. A (8)

Y. E. Young, R. Ejnisman, J. P. Shaffer, and N. P. Bigelow, “Heteronuclear hyperfine-state-changing cold collisions,” Phys. Rev. A 62, 055403 (2000).
[CrossRef]

L. G. Marcassa, G. D. Telles, S. R. Muniz, and V. S. Bagnato, “Collisional losses in a K-Rb cold mixture,” Phys. Rev. A 63, 013413 (2001).
[CrossRef]

G. D. Telles, W. Garcia, L. G. Marcassa, V. S. Bagnato, D. Ciampini, M. Fazzi, J. H. Müller, D. Wilkowski, and E. Arimondo, “Trap loss in a two-species Rb-Cs magneto-optical trap,” Phys. Rev. A 63, 033406 (2001).
[CrossRef]

J. Goldwin, S. B. Papp, B. DeMarco, and D. S. Jin, “Two-species magneto-optical trap with 40K and 87Rb,” Phys. Rev. A 65, 021402(R) (2002).
[CrossRef]

M. S. Santos, P. Nussenzveig, L. G. Marcassa, K. Helmerson, J. Flemming, S. C. Zilio, and V. S. Bagnato, “Simultaneous trapping of two different atomic species in a vapor-cell magneto-optical trap,” Phys. Rev. A 52, R4340–R4343 (1995).
[CrossRef] [PubMed]

G. D. Telles, L. G. Marcassa, S. R. Muniz, S. G. Miranda, A. Antunes, C. Westbrook, and V. S. Bagnato, “Inelastic cold collisions of a Na/Rb mixture in a magneto-optical trap,” Phys. Rev. A 59, R23–R26 (1999).
[CrossRef]

J. P. Shaffer, W. Chalupczak, and N. P. Bigelow, “Trap loss in a two-species Na–Cs magneto-optical trap: Intramultiplet mixing in heteronuclear ultracold collisions,” Phys. Rev. A 60, R3365–R3368 (1999).
[CrossRef]

J. Ramirez-Serrano, W. DeGraffenreid, and J. Weiner, “Polarization-dependent spectra in the photoassociative ionization of cold atoms in a bright sodium beam,” Phys. Rev. A 65, 052719 (2002).
[CrossRef]

Phys. Rev. Lett. (6)

D. Sesko, T. Walker, C. Monroe, A. Gallagher, and C. Wieman, “Collisional losses from a light-force atom trap,” Phys. Rev. Lett. 63, 961–964 (1989).
[CrossRef] [PubMed]

B. C. Regan, E. D. Commins, C. J. Schmidt, and D. DeMille, “New limit on the electron electric dipole moment,” Phys. Rev. Lett. 88, 071805 (2002).
[CrossRef] [PubMed]

D. Bear, R. E. Stoner, R. L. Walsworth, V. A. Kostelecký, and C. D. Lane, “Limit on Lorentz and CPT violation of the neutron using a two-species noble-gas maser,” Phys. Rev. Lett. 85, 5038–5041 (2000).
[CrossRef] [PubMed]

Z. T. Lu, K. L. Corwin, M. J. Renn, M. H. Anderson, E. A. Cornell, and C. E. Wieman, “Low-velocity intense source of atoms from a magneto-optical trap,” Phys. Rev. Lett. 77, 3331–3334 (1996).
[CrossRef] [PubMed]

R. Onofrio and C. Presilla, “Reaching Fermi degeneracy in two-species optical dipole traps,” Phys. Rev. Lett. 89, 100401 (2002).
[CrossRef] [PubMed]

Z. Hadzibabic, C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle, “Two-species mixture of quantum degenerate Bose and Fermi gases,” Phys. Rev. Lett. 88, 160401 (2002).
[CrossRef] [PubMed]

Rev. Mod. Phys. (1)

J. Weiner, V. S. Bagnato, S. Zilio, and P. S. Julienne, “Experiments and theory in cold and ultracold collisions,” Rev. Mod. Phys. 71, 1–85 (1999).
[CrossRef]

Science (3)

G. Modugno, G. Roati, F. Riboli, F. Ferlaino, R. J. Brecha, and M. Inguscio, “Collapse of a degenerate Fermi gas,” Science 297, 2240–2243 (2002).
[CrossRef] [PubMed]

A. G. Truscott, K. E. Strecker, W. I. McAlexander, G. B. Partridge, and R. G. Hulet, “Observation of Fermi pressure in a gas of trapped atoms,” Science 291, 2570–2572 (2001).
[CrossRef] [PubMed]

B. DeMarco and D. S. Jin, “Onset of Fermi degeneracy in a trapped atomic gas,” Science 285, 1703–1706 (1999).
[CrossRef] [PubMed]

Other (4)

Detailed Monte-Carlo simulations of the CAB-loaded UHV MOT predict that the capture efficiency of cold atoms from the atomic beam by the UHV MOT is approximately 70 percent; this efficiency is limited primarily by the small (1 cm) diameter for the trapping laser beams.

While the primary focus of Ref. 7 was the study of Rb trap losses from cold collisions with Cs, the authors mention that they also measured a value for βCs-Rb that was twenty times lower than the corresponding value for βRb-Cs. We are uncertain as to whether this result is actually inconsistent with ours, as the trap parameters were not specified for their measurement.

See http://funphysics.jpl.nasa.gov/technical/library/pi-list.html.

J. Ramirez-Serrano, W. DeGraffenreid, J. Weiner, E. Tiesinga, and P. Julienne, “Beamloss spectroscopy of cold collisions in a bright sodium beam,” Phys. Rev. A (to be published).

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the experimental apparatus, including the two-species cold atomic beam source and UHV MOT. The distance from the source to the UHV MOT is 36 cm.

Fig. 2
Fig. 2

Loading curves for the Cs (dots) and Rb (diamonds) UHV traps after switching on the cold atomic beam source.

Fig. 3
Fig. 3

Typical decay of the Cs UHV MOT with (dots) and without (diamonds) the presence of cold Rb atoms. The solid and dotted curves are least-squares fits of the data to single exponential decays with and without the cold Rb background, respectively. The fit to the “two-species” decay (solid curve) omits the first three data points, as discussed in the text.

Tables (1)

Tables Icon

Table 1 Typical Parameters for the Cold Atomic Beam (CAB) Source and UHV MOT

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

dNCsdt=L-γNCs-βVnCs2dr-βVnCsnRbdr,
dNCsdt=-(βnCs+βnRbF)NCs,
βCs-Rb=η(0.7±0.2)×10-11 cm3/s,

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