Abstract

Gas phase C60 is resonantly excited using picosecond infrared (IR) pulses from a free electron laser. The excitation can be very high, reaching levels where the thermal emission of electrons from C60 is observed. The excitation is much more efficient when the IR radiation is chirped to lower frequencies during the excitation process. The excitation process is modeled and the results are compared to the experiment.

© 1999 Optical Society of America

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References

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  1. T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
    [Crossref]
  2. A. Amrein, R. Simpson, and P. Hackett, “Delayed ionization following photoexcitation of small clusters of refractory elements - nanofllaments,” J. Chem. Phys. 94, 4663 (1991).
    [Crossref]
  3. E.E.B. Campbell, G. Ulmer, and I.V. Hertel, “Delayed ionization of C60 and C70,” Phys. Rev. Lett. 67, 1986 (1991).
    [Crossref] [PubMed]
  4. P. Wurz and K.R. Lykke, “Delayed electron emission from photoexcited C60/” J- Chem. Phys. 95, 7008 (1991).
    [Crossref]
  5. D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
    [Crossref] [PubMed]
  6. M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
    [Crossref]
  7. G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
    [Crossref]
  8. G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
    [Crossref]
  9. D. Oepts, A.F.G. van der Meer, and P.W. van Amersfoort, “The free-electron-laser user facility FELIX,” Infrared Phys. Technol. 36, 297 (1995); http://www.rijnh.nl/DEPARTMENTS/LASER/FELIX/felix.html
    [Crossref]
  10. G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
    [Crossref]
  11. D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
    [Crossref]
  12. V.N. Bagratashvili, V.S. Letokhov, A.A. Makarov, and E.A. Ryabov, Multiple Photon Infrared Laser Photophysics and Photochemistry, Harwood Academic Publishers (1985).
  13. L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
    [Crossref]
  14. C.E. Klots and R.N. Compton, “Evidence for thermionic emission from small aggregates,” Surf. Rev. Lett. 3, 535 (1996).
    [Crossref]

1998 (1)

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

1997 (2)

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
[Crossref]

1996 (2)

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

C.E. Klots and R.N. Compton, “Evidence for thermionic emission from small aggregates,” Surf. Rev. Lett. 3, 535 (1996).
[Crossref]

1995 (1)

D. Oepts, A.F.G. van der Meer, and P.W. van Amersfoort, “The free-electron-laser user facility FELIX,” Infrared Phys. Technol. 36, 297 (1995); http://www.rijnh.nl/DEPARTMENTS/LASER/FELIX/felix.html
[Crossref]

1994 (2)

D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
[Crossref] [PubMed]

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

1991 (5)

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

A. Amrein, R. Simpson, and P. Hackett, “Delayed ionization following photoexcitation of small clusters of refractory elements - nanofllaments,” J. Chem. Phys. 94, 4663 (1991).
[Crossref]

E.E.B. Campbell, G. Ulmer, and I.V. Hertel, “Delayed ionization of C60 and C70,” Phys. Rev. Lett. 67, 1986 (1991).
[Crossref] [PubMed]

P. Wurz and K.R. Lykke, “Delayed electron emission from photoexcited C60/” J- Chem. Phys. 95, 7008 (1991).
[Crossref]

Amrein, A.

A. Amrein, R. Simpson, and P. Hackett, “Delayed ionization following photoexcitation of small clusters of refractory elements - nanofllaments,” J. Chem. Phys. 94, 4663 (1991).
[Crossref]

Athanassenas, K.

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

Bagratashvili, V.N.

V.N. Bagratashvili, V.S. Letokhov, A.A. Makarov, and E.A. Ryabov, Multiple Photon Infrared Laser Photophysics and Photochemistry, Harwood Academic Publishers (1985).

Bernath, P.F.

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Bethune, D.S.

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Brown, Ch.A.

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Campbell, E.E.B.

E.E.B. Campbell, G. Ulmer, and I.V. Hertel, “Delayed ionization of C60 and C70,” Phys. Rev. Lett. 67, 1986 (1991).
[Crossref] [PubMed]

Compton, R.N.

C.E. Klots and R.N. Compton, “Evidence for thermionic emission from small aggregates,” Surf. Rev. Lett. 3, 535 (1996).
[Crossref]

D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
[Crossref] [PubMed]

de Vries, M.S.

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Ding, D.

D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
[Crossref] [PubMed]

Echt, O.

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

Gillespie, W.A.

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

Golden, W.G.

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Hackett, P.

A. Amrein, R. Simpson, and P. Hackett, “Delayed ionization following photoexcitation of small clusters of refractory elements - nanofllaments,” J. Chem. Phys. 94, 4663 (1991).
[Crossref]

Haufler, R.E.

D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
[Crossref] [PubMed]

Hertel, I.V.

E.E.B. Campbell, G. Ulmer, and I.V. Hertel, “Delayed ionization of C60 and C70,” Phys. Rev. Lett. 67, 1986 (1991).
[Crossref] [PubMed]

Hippler, M.

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

Holleman, I.

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
[Crossref]

Huang, J.

D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
[Crossref] [PubMed]

Huffman, D.R.

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Kandler, O.

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

Klots, C.E.

C.E. Klots and R.N. Compton, “Evidence for thermionic emission from small aggregates,” Surf. Rev. Lett. 3, 535 (1996).
[Crossref]

D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
[Crossref] [PubMed]

Knippels, G.M.H.

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
[Crossref]

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

Kreisle, D.

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

Lamb, L.D.

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Leisner, T.

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

Letokhov, V.S.

V.N. Bagratashvili, V.S. Letokhov, A.A. Makarov, and E.A. Ryabov, Multiple Photon Infrared Laser Photophysics and Photochemistry, Harwood Academic Publishers (1985).

Lykke, K.R.

P. Wurz and K.R. Lykke, “Delayed electron emission from photoexcited C60/” J- Chem. Phys. 95, 7008 (1991).
[Crossref]

MacLeod, A.M.

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

Makarov, A.A.

V.N. Bagratashvili, V.S. Letokhov, A.A. Makarov, and E.A. Ryabov, Multiple Photon Infrared Laser Photophysics and Photochemistry, Harwood Academic Publishers (1985).

Mark, T.

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

Matt, S.

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

Meijer, G.

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
[Crossref]

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Mols, R.F.X.A.M.

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

Nemes, L.

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Oepts, D.

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

D. Oepts, A.F.G. van der Meer, and P.W. van Amersfoort, “The free-electron-laser user facility FELIX,” Infrared Phys. Technol. 36, 297 (1995); http://www.rijnh.nl/DEPARTMENTS/LASER/FELIX/felix.html
[Crossref]

Quack, M.

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

Ram, R.S.

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Recknagel, E.

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

Rosen, H.J.

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Ryabov, E.A.

V.N. Bagratashvili, V.S. Letokhov, A.A. Makarov, and E.A. Ryabov, Multiple Photon Infrared Laser Photophysics and Photochemistry, Harwood Academic Publishers (1985).

Schwarz, R.

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

Seki, H.

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Seyfang, G.

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

Simpson, R.

A. Amrein, R. Simpson, and P. Hackett, “Delayed ionization following photoexcitation of small clusters of refractory elements - nanofllaments,” J. Chem. Phys. 94, 4663 (1991).
[Crossref]

Tang, W.C.

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

Tinker, F.A.

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Ulmer, G.

E.E.B. Campbell, G. Ulmer, and I.V. Hertel, “Delayed ionization of C60 and C70,” Phys. Rev. Lett. 67, 1986 (1991).
[Crossref] [PubMed]

van Amersfoort, P.W.

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

D. Oepts, A.F.G. van der Meer, and P.W. van Amersfoort, “The free-electron-laser user facility FELIX,” Infrared Phys. Technol. 36, 297 (1995); http://www.rijnh.nl/DEPARTMENTS/LASER/FELIX/felix.html
[Crossref]

van der Meer, A.F.G.

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
[Crossref]

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

D. Oepts, A.F.G. van der Meer, and P.W. van Amersfoort, “The free-electron-laser user facility FELIX,” Infrared Phys. Technol. 36, 297 (1995); http://www.rijnh.nl/DEPARTMENTS/LASER/FELIX/felix.html
[Crossref]

van Roij, A.J.A.

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

von Helden, G.

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
[Crossref]

Wurz, P.

P. Wurz and K.R. Lykke, “Delayed electron emission from photoexcited C60/” J- Chem. Phys. 95, 7008 (1991).
[Crossref]

Zumwalt, M.C.

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Chem. Phys. Lett. (3)

M. Hippler, M. Quack, R. Schwarz, G. Seyfang, S. Matt, and T. Mark, “Infrared multiphoton excitation, dissociation and ionization of C60” Chem. Phys. Lett. 278, 111 (1997).
[Crossref]

D.S. Bethune, G. Meijer, W.C. Tang, H.J. Rosen, W.G. Golden, H. Seki, Ch.A. Brown, and M.S. de Vries, “Vibrational raman and infrared spectra of chromatographically separated C60 and C70 fullerene clusters,” Chem. Phys. Lett. 179, 181 (1991).
[Crossref]

L. Nemes, R.S. Ram, P.F. Bernath, F.A. Tinker, M.C. Zumwalt, L.D. Lamb, and D.R. Huffman, “Gas-phase infrared emission spectra of C60 and C70 - temperature-dependent studies,” Chem. Phys. Lett. 218, 295 (1994).
[Crossref]

Infrared Phys. Technol. (2)

D. Oepts, A.F.G. van der Meer, and P.W. van Amersfoort, “The free-electron-laser user facility FELIX,” Infrared Phys. Technol. 36, 297 (1995); http://www.rijnh.nl/DEPARTMENTS/LASER/FELIX/felix.html
[Crossref]

G.M.H. Knippels, A.F.G. van der Meer, R.F.X.A.M. Mols, D. Oepts, P.W. van Amersfoort, A.M. MacLeod, and W.A. Gillespie, “Feasibility of a far-infrared free-electron laser as a voltage-controlled oscilator,” Infrared Phys. Technol. 37, 285 (1996).
[Crossref]

J- Chem. Phys. (1)

P. Wurz and K.R. Lykke, “Delayed electron emission from photoexcited C60/” J- Chem. Phys. 95, 7008 (1991).
[Crossref]

J. Chem. Phys. (1)

A. Amrein, R. Simpson, and P. Hackett, “Delayed ionization following photoexcitation of small clusters of refractory elements - nanofllaments,” J. Chem. Phys. 94, 4663 (1991).
[Crossref]

Phys. Rev. Lett. (4)

E.E.B. Campbell, G. Ulmer, and I.V. Hertel, “Delayed ionization of C60 and C70,” Phys. Rev. Lett. 67, 1986 (1991).
[Crossref] [PubMed]

D. Ding, J. Huang, R.N. Compton, C.E. Klots, and R.E. Haufler, “Cw laser ionization of C60 and C70,” Phys. Rev. Lett. 73, 1084 (1994).
[Crossref] [PubMed]

G. von Helden, I. Holleman, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Infrared resonance enhanced multi photon ionization of fullerenes,” Phys. Rev. Lett. 79, 5234 (1997).
[Crossref]

G. von Helden, I. Holleman, A.J.A. van Roij, G.M.H. Knippels, A.F.G. van der Meer, and G. Meijer, “Shedding new light on thermionic electron emission of fullerenes,” Phys. Rev. Lett. 81, 1825 (1998);http://mlfsilly.sci.kun.nl/˜denizvh/IRREMPI.html
[Crossref]

Surf. Rev. Lett. (1)

C.E. Klots and R.N. Compton, “Evidence for thermionic emission from small aggregates,” Surf. Rev. Lett. 3, 535 (1996).
[Crossref]

Z. Physik D (1)

T. Leisner, K. Athanassenas, O. Echt, O. Kandler, D. Kreisle, and E. Recknagel, “Hot tungsten clusters - competition between atom ejection and thermionic emission,” Z. Physik D 20, 127 (1991).
[Crossref]

Other (1)

V.N. Bagratashvili, V.S. Letokhov, A.A. Makarov, and E.A. Ryabov, Multiple Photon Infrared Laser Photophysics and Photochemistry, Harwood Academic Publishers (1985).

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Figures (7)

Fig. 1.
Fig. 1.

Schematic of the experimental setup.

Fig. 2.
Fig. 2.

IR-REMPI spectrum of gas-phase C60.

Fig. 3.
Fig. 3.

IR-REMPI peak of gas-phase C60 recorded using a chirped (upper trace) and an non chirped (lower trace) excitation laser.

Fig. 4.
Fig. 4.

False-color representation of the frequency of the excitation laser during the chirped macropulse. The wavelength setting of FELIX corresponds to the one used on the peak of the resonance shown in the upper trace of Fig. 3.

Fig. 5.
Fig. 5.

IR absorption profiles of C60 at different internal energies (solid lines) together with three spectral profiles of FELIX (dashed curves).

Fig. 6.
Fig. 6.

Most probable excitation as a function of FELIX frequency. Shown is a simulation for a frequency chirped and a non chirped excitation laser.

Fig. 7.
Fig. 7.

Normalized internal energy distribution while scanning the non chirped FELIX pulse over the excitation line.

Equations (5)

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d n i dt = F i + 1 , i + F i 1 , i F i , i + 1 F i , i 1
F i , j = I ħ ω σ i , j · n i
A i , j = σ i , j ( ω ) · = 4 π 2 ω res · d j 2 ħc
σ i , i + 1 σ i + 1 , i = A i , i + 1 A i + 1 , i = g i + 1 g i
σ i , j ( ω ) = A i , j · f ( ω ω res )

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