Yields, Angular Distributions, and Polarization of Gamma Rays from Coulomb Excitation

F. K. McGowan and P. H. Stelson
Phys. Rev. 109, 901 – Published 1 February 1958
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Abstract

The yields of gamma rays resulting from Coulomb excitation have been measured for Tl205, Tl203, Au197, Ir193, Ir191, Re187, Re185, W183, Ta181, Cd113, Cd111, Ag109, Ag107, Rh103, Mo95, Os192, Os190, Os188, W186, W184, and W182. Angular distributions of the gamma radiation from the nuclei Tl205, Tl203, Au197, Ir193, Ir191, Re187, Re185, Ta181, Cd113, Cd111, Ag109, Ag107, Rh103, and Mo95 have been measured with respect to the incident proton beam on thick targets. The linear polarization of gamma rays following Coulomb excitation has been studied. A polarimeter based on the Compton scattering mechanism has been constructed and its effectiveness determined by measurements of the known polarization of gamma rays from excitation of 2+ levels in even-even nuclei. Polarization-direction measurements of several transitions in odd-mass nuclei have resolved the ambiguity either in the value of (E2M1)12 or in the spin of the excited state deduced from the angular distributions. Reduced transition probabilities for E2 and M1 transitions are obtained. In some instances these quantities are compared to the predictions of the collective model of the nucleus.

  • Received 7 October 1957

DOI:https://doi.org/10.1103/PhysRev.109.901

©1958 American Physical Society

Authors & Affiliations

F. K. McGowan and P. H. Stelson

  • Oak Ridge National Laboratory, Oak Ridge, Tennessee

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Issue

Vol. 109, Iss. 3 — February 1958

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