Further Measurements of Gamma Transitions in Spontaneous-Fission Fragments of Cf252

F. F. Hopkins, J. R. White, G. W. Phillips, C. Fred Moore, and Patrick Richard
Phys. Rev. C 5, 1015 – Published 1 March 1972
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Abstract

γ rays in the range from 150 to 1000 keV, following the spontaneous fission of Cf252, are observed with a 20-cm3 Ge(Li) detector [full width at half maximum (FWHM) 3.5 keV at 356 keV] in coincidence with K x rays from the fission fragments, observed with a 0.14-cm3 Ge(Li) detector (FWHM 350 eV at 31 keV). Twenty-one 1024-channel γ-ray spectra were accumulated and sorted by computer, corresponding to windows set on K x rays from Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Sb, Te, I, Xe, Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, and Eu. In conjunction with previous work, this data allowed both mass and charge assignments to be made for about 90 of the observed transitions. Relative yields for certain γ rays in self-gated spectra, those for which both x ray and γ ray originated from the same isotope, have been measured and compared with predictions based on previous work.

  • Received 1 November 1971

DOI:https://doi.org/10.1103/PhysRevC.5.1015

©1972 American Physical Society

Authors & Affiliations

F. F. Hopkins, J. R. White, G. W. Phillips*, C. Fred Moore, and Patrick Richard

  • Center for Nuclear Studies, University of Texas, Austin, Texas 78712

  • *Present address: Teledyne Isotopes, Westwood Laboratories, 50 Van Buren Avenue, Westwood, N. J. 07675.

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Vol. 5, Iss. 3 — March 1972

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