Elsevier

Nuclear Physics A

Volume 227, Issue 2, 22 July 1974, Pages 373-388
Nuclear Physics A

Properties of nuclear levels photoexcited by neutron-capture γ-rays of Ti and Cu

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Abstract

Neutron capture γ-rays of Ti and Cu have been used to photoexcite nuclear levels in the 5–8 MeV region in various nuclei. The spins, parities, and radiative widths of resonance levels in 65Cu, 100Mo, 118Sn, 126Te, 130Te, 186W and 209Bi, were measured. The spins of the resonance levels were obtained by angular distribution measurements, and the parities by polarization measurements. The radiative widths were determined using nuclear self-absorption, temperature variation and absolute scattering cross section measurements. The total radiative widths were found to be of the same magnitude as those of neutron resonances, after applying a correction allowing for different excitation energies. Some E2M1 mixing ratios of high energy transitions were obtained; the E2 widths were found to be of the same magnitude as those obtained in (n, γ) experiments.

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