Open AccessDecay of 160Er* in 16O + 144Nd and 64Ni + 96Zr Fusion Reactions
Author(s) -
N. G. Nicolis,
J. Barreto,
D. G. Sarantites,
R. J. Charity,
L. G. Sobotka,
D. W. Stracener,
D. C. Hensley,
J. R. Beene,
C. Baktash,
M.L. Halbert,
M. Thoennessen
Publication year - 2019
Publication title -
hnps advances in nuclear physics
Language(s) - English
Resource type - Journals
eISSN - 2654-0088
pISSN - 2654-007X
DOI - 10.12681/hnps.2410
Subject(s) - fusion , nucleus , atomic physics , nuclear fusion , angular momentum , evaporation , population , physics , nuclear reaction , nuclear physics , chemistry , thermodynamics , philosophy , linguistics , demography , quantum mechanics , sociology , biology , microbiology and biotechnology
The population of evaporation residue entry states in the decay of the compound nucleus 160Er*(54 MeV) is investigated in a cross-bombardment employing the reactions 160 + 144Nd and 64Ni + 96Zr. Evaporation residue cross sections and entry state 7-ray fold distributions of the dominant exit channels were obtained for each reaction, using a 4π 7-ray detection system. An entrance-channel dependence of the 7-ray fold distributions of the xn products is observed. This effect is described successfully by the statistical model making use of compound nucleus angular momentum distributions obtained with a fusion model that provides a good description of the bombarding energy dependence of fusion data for both reactions. In accordance with recent findings on the decay of 164Yb*, it is suggested that the observed differences in the population of the dominant exit channels originate from the primary spin distributions rather than a possible dependence of the compound nucleus decay on the formation mode.