A. Chakraborty, J. N. Orce, S. F. Ashley, B. A. Brown, B. P. Crider, E. Elhami, M. T. McEllistrem, S. Mukhopadhyay, E. E. Peters, B. Singh, and S. W. Yates Phys. Rev. C: Nucl. Phys., vol: 83, num: 3, 11 pages, published: 16 March 2011, 034316 Abstract: Measurements consisting of Î³-ray excitation functions and angular distributions were performed using the (n,n^{â€²}Î³) reaction on ^{62}Ni. The excitation function data allowed us to check the consistency of the placement of transitions in the level scheme. From Î³-ray angular distributions, the lifetimes of levels up to ~3.8 MeV in excitation energy were extracted with the Doppler-shift attenuation method. The experimentally deduced values of reduced transition probabilities were compared with the predictions of the quadrupole vibrator model and with large-scale shell model calculations in the fp shell configuration space. Two-phonon states were found to exist with some notable deviation from the predictions of the quadrupole vibrator model, but no evidence for the existence of three-phonon states could be established. Z=28 proton core excitations played a major role in understanding the observed structure. Atomic nucleus. Basic nuclear properties. Properties of particular nuclei. Properties of particular nuclei (experiment). Z=27÷31. Atomic nucleus. Radioactive decay. Electromagnetic transitions in nuclei (experiment). Electromagnetic transition rates in nuclei (40<A≤90). Atomic nucleus. Nuclear reactions. Nuclear reactions induced by neutrons (experiment). Neutron-nucleus interactions at 100 keV<E≤ 200 MeV. Inelastic neutron scattering (40<A≤90). Atomic nucleus. Nuclear structure. Collective models of atomic nuclei and collective motions in nuclei (other than rotations). Low-frequency vibrations in nuclei. Atomic nucleus. Basic nuclear properties. Properties of particular nuclei. Properties of particular nuclei (theory). Z=27÷31. Atomic nucleus. Nuclear structure. Microscopic methods in nuclear structure theory (Hartree-Fock method, random phase approximation, etc.). Monte--Carlo methods. Atomic nucleus. Radioactive decay. Electromagnetic transitions in nuclei (theory). Electromagnetic transition rates in nuclei (A>150). Link |
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