Nuclear Magnetic Moments ofBi205,207,209Isot

Abstract

The hyperfine structure of the 3067-A line of 15-d 205 Bi was measured by optical spectroscopy. The results are A( i P i/2 ) = 166(4)x 10~3 cm" 1 , giving \x = 4.13(11)/^, and 192 (14) x 10" 3 cm" 1 for the 205 Bi-209 Bi isotope shift. A reexamination of the 207 Bi hfs shows accord with previous spectroscopic results \p. = 4.07(2)^] , but not with the recent nuclear orientation finding by Johnston, Kaplan, and Stone that ^( 207 Bi) is substantially larger than J U ( 209 Bi). Calculations of magnetic moments of odd bismuth isotopes, including configuration mixing and pion-exchange contributions, are in agreement with our experiments.

Hyperfine spectrum of207Bi by absorption spectroscopy: Isotope shift systematics in heavy elements

“…The hfs of bismuth is of importance to nuclear magnetic moment theory. We confirmed our first emission -spectroscopic result for Z~ in the course of our experiment on 2~ [4], The present absorption measurement serves to further refine the 2~ magnetic moment value. For 2~ there is an added contribution of nuclear configuration mixing, which can be reasonably calculated [7].…”

“…Thus all IS studies rely on experiments with radioactive isotopes, In an earlier experiment [3], we succeeded in measuring the hfs in the emission spectrum of Z~ The isotope shift, which relied on limited data from a single spectroscopic plate, exhibited a shift relative to Z~ and 2~ [4] which was significantly different from the mercury, thallium and lead isotopes [5], Because the IS is very sensitive to possible systematic errors, we performed the present higher precision absorption spectroscopic study. The result leads to a new conclusion about IS systematics of bismuth.…”

Noncollinear interactions in urea crystals used for nonlinear optical frequency conversion

“…Five of the six components were fully resolved and each hyperfine parameter could be experimentally determined without scaling the A-factors. A 205 Bi I = 9 2 ground state moment of +4.065(7)µ N is deduced, consistent with a previous optical report of +4.16(10)µ N [16].…”

Pulsed laser resonance ionization mass spectrometry for elementally selective detection of lead and bismuth mixtures

“…For Bi, both hyperfine structure and isotope shifts contribute to the optical spectra. The hyperfine pattern will be ~250 mK wide for all cases (25)(26)(27)(28)(29)(30); the isotope shift, although unmeasured at present, can be expected to be similar to that of Pb (29). Of course, in both instances, the atom source conditions must be such that Doppler broadening is not extreme.…”