Abstract

We report a systematic study of the isotope shift of an argon atom for sp and pd transitions in the visible and the near-infrared regions. The isotope shifts were determined by saturation spectroscopy, and the measurements were effected by use of a standard error of approximately 1 MHz. Combining our spectroscopic measurements with the nuclear charge radii available from muonic transitions, we were able to extract the specific mass and the volume contributions to the isotope shift. In all the investigated transitions we observed a field shift contribution that is surprising for a light element like argon. Moreover, for pd transitions we also found a field shift larger than for sp ones, in spite of the fact that s orbitals experience more of the electron density at the nucleus.

© 1999 Optical Society of America

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References

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  1. W. H. King, Isotope Shifts in Atomic Spectra (Plenum, New York, 1984).
  2. D. E. Murnick, W. R. Softky, and D. N. Stoneback, Phys. Lett. B 174, 238 (1986).
    [CrossRef]
  3. D. E. Murnick, F. A. Moscatelli, and R. B. Robinson, J. Phys. B 21, L495 (1988).
    [CrossRef]
  4. G. Pesce and A. Sasso, Opt. Commun. 149, 272 (1998).
    [CrossRef]
  5. M. G. Bowler, Nuclear Physics (Pergamon, New York, 1973).
  6. A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
    [CrossRef]
  7. A. A. Radzig and B. M. Smirnov, Reference Data on Atoms, Molecules and Ions (Springer-Verlag, New York, 1985).
  8. J. Bauche and R. J. Champeau, Adv. At. Mol. Phys. 37, 455 (1976).
  9. L. Gianfrani, M. Inguscio, A. Sasso, and G. M. Tino, Opt. Commun. 78, 158 (1990).
    [CrossRef]
  10. M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
    [CrossRef]
  11. G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
    [CrossRef]
  12. J. Brochard, P. Cahuzac, and R. Vetter, C. R. Seances Acad. Sci., Ser. B 265, 467 (1967).
  13. H. G. Kuhn, Atomic Spectra (Longmans, Green and Company LTD, London, 1962).
  14. P. Aufmuth, K. Heilig and H. Steudel, At. Data Nucl. Data Tables 37, 455 (1987).
    [CrossRef]

1998 (1)

G. Pesce and A. Sasso, Opt. Commun. 149, 272 (1998).
[CrossRef]

1996 (1)

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

1995 (1)

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

1990 (2)

L. Gianfrani, M. Inguscio, A. Sasso, and G. M. Tino, Opt. Commun. 78, 158 (1990).
[CrossRef]

M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
[CrossRef]

1988 (1)

D. E. Murnick, F. A. Moscatelli, and R. B. Robinson, J. Phys. B 21, L495 (1988).
[CrossRef]

1987 (1)

P. Aufmuth, K. Heilig and H. Steudel, At. Data Nucl. Data Tables 37, 455 (1987).
[CrossRef]

1986 (1)

D. E. Murnick, W. R. Softky, and D. N. Stoneback, Phys. Lett. B 174, 238 (1986).
[CrossRef]

1976 (1)

J. Bauche and R. J. Champeau, Adv. At. Mol. Phys. 37, 455 (1976).

1967 (1)

J. Brochard, P. Cahuzac, and R. Vetter, C. R. Seances Acad. Sci., Ser. B 265, 467 (1967).

Aufmuth, P.

P. Aufmuth, K. Heilig and H. Steudel, At. Data Nucl. Data Tables 37, 455 (1987).
[CrossRef]

Barsanti, M.

M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
[CrossRef]

Bauche, J.

J. Bauche and R. J. Champeau, Adv. At. Mol. Phys. 37, 455 (1976).

Bernhardt, C.

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

Brochard, J.

J. Brochard, P. Cahuzac, and R. Vetter, C. R. Seances Acad. Sci., Ser. B 265, 467 (1967).

Brown, B. A.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Cahuzac, P.

J. Brochard, P. Cahuzac, and R. Vetter, C. R. Seances Acad. Sci., Ser. B 265, 467 (1967).

Champeau, R. J.

J. Bauche and R. J. Champeau, Adv. At. Mol. Phys. 37, 455 (1976).

De Jager, C. W.

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

Fricke, G.

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

Georg, U.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Gianfrani, L.

L. Gianfrani, M. Inguscio, A. Sasso, and G. M. Tino, Opt. Commun. 78, 158 (1990).
[CrossRef]

Heilig, K.

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

P. Aufmuth, K. Heilig and H. Steudel, At. Data Nucl. Data Tables 37, 455 (1987).
[CrossRef]

Hollberg, L.

M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
[CrossRef]

Inguscio, M.

M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
[CrossRef]

L. Gianfrani, M. Inguscio, A. Sasso, and G. M. Tino, Opt. Commun. 78, 158 (1990).
[CrossRef]

Keim, M.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Klein, A.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Lievens, P.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Moscatelli, F. A.

D. E. Murnick, F. A. Moscatelli, and R. B. Robinson, J. Phys. B 21, L495 (1988).
[CrossRef]

Murnick, D. E.

D. E. Murnick, F. A. Moscatelli, and R. B. Robinson, J. Phys. B 21, L495 (1988).
[CrossRef]

D. E. Murnick, W. R. Softky, and D. N. Stoneback, Phys. Lett. B 174, 238 (1986).
[CrossRef]

Neugart, R.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Neuroth, M.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Pesce, G.

G. Pesce and A. Sasso, Opt. Commun. 149, 272 (1998).
[CrossRef]

Robinson, R. B.

D. E. Murnick, F. A. Moscatelli, and R. B. Robinson, J. Phys. B 21, L495 (1988).
[CrossRef]

Sasso, A.

G. Pesce and A. Sasso, Opt. Commun. 149, 272 (1998).
[CrossRef]

M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
[CrossRef]

L. Gianfrani, M. Inguscio, A. Sasso, and G. M. Tino, Opt. Commun. 78, 158 (1990).
[CrossRef]

Schaller, L. A.

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

Schellenberg, L.

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

Shera, E. B.

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

Silvernas, R. E.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Softky, W. R.

D. E. Murnick, W. R. Softky, and D. N. Stoneback, Phys. Lett. B 174, 238 (1986).
[CrossRef]

Steudel, H.

P. Aufmuth, K. Heilig and H. Steudel, At. Data Nucl. Data Tables 37, 455 (1987).
[CrossRef]

Stoneback, D. N.

D. E. Murnick, W. R. Softky, and D. N. Stoneback, Phys. Lett. B 174, 238 (1986).
[CrossRef]

Tino, G. M.

L. Gianfrani, M. Inguscio, A. Sasso, and G. M. Tino, Opt. Commun. 78, 158 (1990).
[CrossRef]

M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
[CrossRef]

Vermeeren, L.

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Vetter, R.

J. Brochard, P. Cahuzac, and R. Vetter, C. R. Seances Acad. Sci., Ser. B 265, 467 (1967).

Adv. At. Mol. Phys. (1)

J. Bauche and R. J. Champeau, Adv. At. Mol. Phys. 37, 455 (1976).

At. Data Nucl. Data Tables (2)

G. Fricke, C. Bernhardt, K. Heilig, L. A. Schaller, L. Schellenberg, E. B. Shera, and C. W. De Jager, At. Data Nucl. Data Tables 60, 177 (1995).
[CrossRef]

P. Aufmuth, K. Heilig and H. Steudel, At. Data Nucl. Data Tables 37, 455 (1987).
[CrossRef]

C. R. Seances Acad. Sci., Ser. B (1)

J. Brochard, P. Cahuzac, and R. Vetter, C. R. Seances Acad. Sci., Ser. B 265, 467 (1967).

J. Phys. B (1)

D. E. Murnick, F. A. Moscatelli, and R. B. Robinson, J. Phys. B 21, L495 (1988).
[CrossRef]

Nucl. Phys. A (1)

A. Klein, B. A. Brown, U. Georg, M. Keim, P. Lievens, R. Neugart, M. Neuroth, R. E. Silvernas, and L. Vermeeren, Nucl. Phys. A 607, 1 (1996).
[CrossRef]

Opt. Commun. (2)

L. Gianfrani, M. Inguscio, A. Sasso, and G. M. Tino, Opt. Commun. 78, 158 (1990).
[CrossRef]

G. Pesce and A. Sasso, Opt. Commun. 149, 272 (1998).
[CrossRef]

Phys. Lett. B (1)

D. E. Murnick, W. R. Softky, and D. N. Stoneback, Phys. Lett. B 174, 238 (1986).
[CrossRef]

Phys. Rev. Lett. (1)

M. Barsanti, L. Hollberg, M. Inguscio, A. Sasso, and G. M. Tino, Phys. Rev. Lett. 64, 2999 (1990).
[CrossRef]

Other (4)

A. A. Radzig and B. M. Smirnov, Reference Data on Atoms, Molecules and Ions (Springer-Verlag, New York, 1985).

W. H. King, Isotope Shifts in Atomic Spectra (Plenum, New York, 1984).

M. G. Bowler, Nuclear Physics (Pergamon, New York, 1973).

H. G. Kuhn, Atomic Spectra (Longmans, Green and Company LTD, London, 1962).

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Figures (4)

Fig. 1
Fig. 1

Schematic level diagram of Ar. The configurations are given at the top. For each level the abbreviated spectroscopic Paschen notation is reported.

Fig. 2
Fig. 2

Experimental setup for saturation and atomic beam spectroscopy.

Fig. 3
Fig. 3

(a) Fluorescence spectra for the 1s52p9 (λ =8117 Å) transition obtained in an atomic beam by means of samples with a natural abundance; (b) absorption-saturated spectra of the same transition, obtained in a cell containing enriched samples.

Fig. 4
Fig. 4

King plots for (a) the 1s52pJ transitions versus the 1s32p2 transition, and for (b) the pd transitions versus the same 1s32p2 transition.

Tables (2)

Tables Icon

Table 1 IS Measurements of Ar, Obtained from Saturation Spectroscopya

Tables Icon

Table 2 Comparison between the Field Factor Ratios for the Transitions Investigated in This Study and in Ref. 4, Obtained through King-Plot and Nuclear Radii Approaches

Equations (9)

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

Δν=ΔνM+ΔνF=ΔνM0K+FC,
F=πa03Δ|ψ(0)|nsnp2Zf(Z),
F=πa03|ψ(0)|ns2Zβf(Z).
ΔσAA=ΔνAA×α(36 38)α(A A),
δr238,40=0.17fm2,
δr238,36=-0.08fm2.
πa03|ψ(0)|ns2=Zn*3dn*dn,
β1s52p7=-0.26±0.04,
β1s52p9=-0.30±0.09.

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