Abstract

An analysis has been made of the discrepancies between the hfs and isotope shift results for Hg<sup>194</sup>, Hg<sup>195</sup>, and Hg<sup>195<i>m</i></sup> of Kleiman and Davis [J. Opt. Soc. Am. <b>53</b>, 822 (1963)] and our data, particularly in view of the importance of these results for our interpretation of the odd-even staggering effect in isotope shift [W.J.T. III and H.H.S., Phys. Rev. Letters <b>8</b>, 436 (1962)]. Our hfs results have been confirmed by the more precise level-crossing experiments of W. W. Smith [Bull. Am. Phys. Soc. <b>8</b>, 9 (1963)]. Errors in the work of Kleiman and Davis have been attributed, in part, to the presence of Hg<sup>197</sup> and Hg<sup>197<i>m</i></sup> in their sources. Experimental results are shown for the Hg<sup>194</sup> isotope shift. We find Hg<sup>194</sup>-Hg<sup>196</sup> isotope shift=0.146±0.010 cm<sup>-1</sup>, and a preliminary value Hg<sup>193<i>m</i></sup>-Hg<sup>195<i>m</i></sup> shift=0.150 cm<sup>-1</sup>. These results lend further support to our hypothesis on the causes of odd-even staggering in isotope shift.

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  1. H. Kleiman and S. P. Davis, J. Opt. Soc. Am. 53, 822 (1963) (preceding paper).
  2. W. J. Tomlinson III and H. H. Stroke, Bull. Am. Phys. Soc. 7, 350 (1962); Quarterly Progress Rept. No. 66, Research Laboratory of Electronics, MIT, 15 July 1962, p. 18.
  3. W. J. Tomlinson III and H. H. Stroke, Phys. Rev. Letters 8, 436 (1962).
  4. W. J. Tomlinson III and H. H. Stroke, Quart. Prog. Rept. No. 68, Research Laboratory of Electronics, MIT, 15 January 1963, p. 21.
  5. W. W. Smith, Bull. Am. Phys. Soc. 8, 9 (1963); also private communication, December 1962.
  6. F. Bitter, Appl. Opt. 1, 1 (1962).
  7. Note added after submission of manuscript: The analysis above and the value for the 194–196 shift quoted for K and D in Table III are based on their original manuscript. Since the submission of our manuscript, they have revised their value to +143±10 mK which agrees with our measurements. They have subsequently obtained results for Hg193m which are also in agreement with our value (Paper MA11, 1963 Spring Meeting of the Optical Society of America).

Bitter, F.

F. Bitter, Appl. Opt. 1, 1 (1962).

Davis, S. P.

H. Kleiman and S. P. Davis, J. Opt. Soc. Am. 53, 822 (1963) (preceding paper).

Kleiman, H.

H. Kleiman and S. P. Davis, J. Opt. Soc. Am. 53, 822 (1963) (preceding paper).

Smith, W. W.

W. W. Smith, Bull. Am. Phys. Soc. 8, 9 (1963); also private communication, December 1962.

Stroke, H. H.

W. J. Tomlinson III and H. H. Stroke, Bull. Am. Phys. Soc. 7, 350 (1962); Quarterly Progress Rept. No. 66, Research Laboratory of Electronics, MIT, 15 July 1962, p. 18.

W. J. Tomlinson III and H. H. Stroke, Quart. Prog. Rept. No. 68, Research Laboratory of Electronics, MIT, 15 January 1963, p. 21.

W. J. Tomlinson III and H. H. Stroke, Phys. Rev. Letters 8, 436 (1962).

Tomlinson III, W. J.

W. J. Tomlinson III and H. H. Stroke, Phys. Rev. Letters 8, 436 (1962).

W. J. Tomlinson III and H. H. Stroke, Quart. Prog. Rept. No. 68, Research Laboratory of Electronics, MIT, 15 January 1963, p. 21.

W. J. Tomlinson III and H. H. Stroke, Bull. Am. Phys. Soc. 7, 350 (1962); Quarterly Progress Rept. No. 66, Research Laboratory of Electronics, MIT, 15 July 1962, p. 18.

Other (7)

H. Kleiman and S. P. Davis, J. Opt. Soc. Am. 53, 822 (1963) (preceding paper).

W. J. Tomlinson III and H. H. Stroke, Bull. Am. Phys. Soc. 7, 350 (1962); Quarterly Progress Rept. No. 66, Research Laboratory of Electronics, MIT, 15 July 1962, p. 18.

W. J. Tomlinson III and H. H. Stroke, Phys. Rev. Letters 8, 436 (1962).

W. J. Tomlinson III and H. H. Stroke, Quart. Prog. Rept. No. 68, Research Laboratory of Electronics, MIT, 15 January 1963, p. 21.

W. W. Smith, Bull. Am. Phys. Soc. 8, 9 (1963); also private communication, December 1962.

F. Bitter, Appl. Opt. 1, 1 (1962).

Note added after submission of manuscript: The analysis above and the value for the 194–196 shift quoted for K and D in Table III are based on their original manuscript. Since the submission of our manuscript, they have revised their value to +143±10 mK which agrees with our measurements. They have subsequently obtained results for Hg193m which are also in agreement with our value (Paper MA11, 1963 Spring Meeting of the Optical Society of America).

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