Nuclear moments and isotope and isomer shifts of neutron-deficient mercury isotopes 195, 195m, 194, 193, 193m and 192

doi:10.1016/0029-5582(64)90098-7

Nuclear Physics

Volume 60, Issue 4, December 1964, Pages 614-633

https://doi.org/10.1016/0029-5582(64)90098-7 Get rights and content

Abstract

Nuclear spins I, magnetic-dipole μ and electro-quadropole Q moments, and optical spectroscopic isotope and isomer shifts (I.S.) have been obtained for the neutron-deficient mercury isotopes and isomers with mass numbers from 192 to 195. The isotopes were produced by p, yn reactions on Au¹⁹⁷. Approximately 0.01μg of Hg was transferred into the rf-excited electrodeless light sources. A well-blazed plane diffraction grating, 25 cm wide, was used in the multiple wavelength monochromator of 11 m focal length for these high-resolution optical hfs measurements. These lead to the results $I = 12$ for Hg¹⁹⁵, $I = 132$ for Hg^195m and Hg^193m; μ = −1.05, 0.53, −1.04 nm for Hg^193m, Hg¹⁹⁵, Hg^195m; Q = 1.37, 1.41 b for Hg^193m, Hg^195m; with respect to Hg¹⁹⁸, I.S. = 0.441±0.020, 0.368 ±0.006, 0.284±0.007, 0.214±0.008, 0.220±0.005^cm−1 for Hg¹⁹², Hg^193m, Hg¹⁹⁴, Hg¹⁹⁵ and Hg^195m. For Hg¹⁹³ the tentative results are $I = 12$ , μ = 0.56 nm, and I.S. = 0.350±0.027 cm⁻¹; the last result was obtained by Walter and Stroke in a magnetic-scanning experiment. The isotope- and isomer-shift results, which have led to a hypothesis of the cause of odd-even staggering in isotope shift, are discussed qualitatively in the light of the polarizability of nuclei by nucleons (coupling of core-excited states with odd particle).

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^†: Present address: U.S. Army Electronics Research and Development Laboratory, Ft. Monmouth, N.J.

^††: Present address: Department of Physics, New York University, University Heights, New York, N.Y.

^†††: This work, which is based on a thesis submitted by W. J. T. III to the Department of Physics, Massachusetts Institute of Technology, July 1963, in partial fulfillment of the requirements for the degree of Doctor of Philosophy, was supported in part by the U.S. Army Signal Corps, the Air Force Office of Scientific Research and the Office of Naval Research.

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Nuclear moments and isotope and isomer shifts of neutron-deficient mercury isotopes 195, 195m, 194, 193, 193m and 192

Abstract

Bull. Am. Phys. Soc.

Phys. Rev. Lett.

J. Opt. Soc. Am.

Revs. Mod. Phys.

Appl. Opt.

Bull. Am. Phys. Soc.

Bull. Am Phys. Soc.

Bull. Am. Phys. Soc.

Bull Am. Phys. Soc.

Phys. Lett.

Ann. Phys.

Nuclear moments

J. Opt. Soc. Am.

J. Opt. Soc. Am.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Nuclear Physics

Phys. Rev.

Nuclear Physics

Rev. Mod. Phys.

Atomic Spectra

Phys. Rev.

Phys. Rev.

Nuclear Physics

Nuclear moments and isotope and isomer shifts of neutron-deficient mercury isotopes 195, 195^m, 194, 193, 193^m and 192