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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 1, Iss. 6 — Dec. 1, 1984
  • pp: 782–787

Precision isotope shifts for the heavy elements. III. Singly ionized thorium (Th ii)

Rolf Engleman, Jr. and Byron A. Palmer  »View Author Affiliations


JOSA B, Vol. 1, Issue 6, pp. 782-787 (1984)
http://dx.doi.org/10.1364/JOSAB.1.000782


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Abstract

High-resolution Fourier-transform spectra of a 232ThI4230ThI4 electrodeless discharge lamp were obtained between 5600 and 36 000 cm−1. These spectra were used to measure the splittings of more than 800 isotopic Th ii doublets to an accuracy of about 0.001 cm−1. From these isotope shifts, 184 even- and 167 odd-level isotope shifts were determined. Level isotope shifts were determined for all known levels below 20 000 cm-, except for the even J = ½ level at 19 594 cm−1. An empirical correlation of the level isotope shifts with a theoretical, configuration-mixing calculation was used to derive pure-configuration level isotope shifts.

© 1984 Optical Society of America

History
Original Manuscript: February 3, 1984
Manuscript Accepted: July 31, 1984
Published: December 1, 1984

Citation
Rolf Engleman and Byron A. Palmer, "Precision isotope shifts for the heavy elements. III. Singly ionized thorium (Th ii)," J. Opt. Soc. Am. B 1, 782-787 (1984)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-1-6-782

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