Abstract

The isotope shift in the 7 <sup>2</sup><i>S</i><sub>½</sub> - 6 <sup>2</sup><i>P</i><sub>½</sub> transition (3776 Å) and the hyperfine-structure separations of Tl<sup>203</sup> and Tl<sup>205</sup> in the 7 <sup>2</sup><i>S</i><sub>½</sub> state have been determined spectroscopically by atomic beam absorption with the use of a Fabry—Pérot interferometer crossed with a 10-in. diffraction grating. Our results are: 0.0554±0.0012 cm<sup>-1</sup> for the isotope shift in the 3776 Å line; -0.0405±0.0013 cm<sup>-1</sup> in the 6 <sup>2</sup><i>P</i><sub>½</sub> level; and Δν (7 <sup>2</sup><i>S</i><sub>½</sub>)=0.4078 ±0.0014 cm<sup>-1</sup> and 0.4109±0.0012 cm<sup>-1</sup> for the hyperfine-structure separation in Tl<sup>203</sup> and Tl<sup>205</sup>, respectively.

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  1. R. J. Hull and H. H. Stroke, J. Opt. Soc. Am. 49, 1088 (1959).
  2. A. I. Odintsov, Optika i Spektroskopia 9, 137 (1960) [Optics and Spectroscopy 9, 75 (1960)].
  3. N. F. Ramsey, Molecular Beams (Oxford University Press, London, 1956), Chap. II; J. G. King and J. R. Zacharias, Advances in Electronics and Electron Physics, Vol. 8, edited by L. Marton (Academic Press Inc., New York, 1956), p. 1.
  4. G. R. Harrison and G. W. Stroke, J. Opt. Soc. Am. 50, 1153 (1960).
  5. S. Tolansky, High Resolution Spectroscopy (Methuen and Company, London, 1942).
  6. A. Lurio and A. G. Prodell, Phys. Rev. 101, 79 (1956).
  7. G. F. Koster, Phys. Rev. 86, 148 (1952).
  8. G. Gould, Phys. Rev. 101, 1828 (1956).
  9. We are grateful to Professor G. F. Koster, of Massachusetts Institute of Technology, Cambridge, Massachusetts for a stimulating discussion.
  10. H. Kopfermann, Nuclear Moments (Academic Press Inc., New York, 1958), p. 177.

Gould, G.

G. Gould, Phys. Rev. 101, 1828 (1956).

Harrison, G. R.

G. R. Harrison and G. W. Stroke, J. Opt. Soc. Am. 50, 1153 (1960).

Hull, R. J.

R. J. Hull and H. H. Stroke, J. Opt. Soc. Am. 49, 1088 (1959).

Kopfermann, H.

H. Kopfermann, Nuclear Moments (Academic Press Inc., New York, 1958), p. 177.

Koster, G. F.

G. F. Koster, Phys. Rev. 86, 148 (1952).

We are grateful to Professor G. F. Koster, of Massachusetts Institute of Technology, Cambridge, Massachusetts for a stimulating discussion.

Lurio, A.

A. Lurio and A. G. Prodell, Phys. Rev. 101, 79 (1956).

Odintsov, A. I.

A. I. Odintsov, Optika i Spektroskopia 9, 137 (1960) [Optics and Spectroscopy 9, 75 (1960)].

Prodell, A. G.

A. Lurio and A. G. Prodell, Phys. Rev. 101, 79 (1956).

Ramsey, N. F.

N. F. Ramsey, Molecular Beams (Oxford University Press, London, 1956), Chap. II; J. G. King and J. R. Zacharias, Advances in Electronics and Electron Physics, Vol. 8, edited by L. Marton (Academic Press Inc., New York, 1956), p. 1.

Stroke, G. W.

G. R. Harrison and G. W. Stroke, J. Opt. Soc. Am. 50, 1153 (1960).

Stroke, H. H.

R. J. Hull and H. H. Stroke, J. Opt. Soc. Am. 49, 1088 (1959).

Tolansky, S.

S. Tolansky, High Resolution Spectroscopy (Methuen and Company, London, 1942).

Other (10)

R. J. Hull and H. H. Stroke, J. Opt. Soc. Am. 49, 1088 (1959).

A. I. Odintsov, Optika i Spektroskopia 9, 137 (1960) [Optics and Spectroscopy 9, 75 (1960)].

N. F. Ramsey, Molecular Beams (Oxford University Press, London, 1956), Chap. II; J. G. King and J. R. Zacharias, Advances in Electronics and Electron Physics, Vol. 8, edited by L. Marton (Academic Press Inc., New York, 1956), p. 1.

G. R. Harrison and G. W. Stroke, J. Opt. Soc. Am. 50, 1153 (1960).

S. Tolansky, High Resolution Spectroscopy (Methuen and Company, London, 1942).

A. Lurio and A. G. Prodell, Phys. Rev. 101, 79 (1956).

G. F. Koster, Phys. Rev. 86, 148 (1952).

G. Gould, Phys. Rev. 101, 1828 (1956).

We are grateful to Professor G. F. Koster, of Massachusetts Institute of Technology, Cambridge, Massachusetts for a stimulating discussion.

H. Kopfermann, Nuclear Moments (Academic Press Inc., New York, 1958), p. 177.

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