Shell structure of new magic nuclei: Systematics of features |
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Authors: | I N Boboshin V V Varlamov B S Ishkhanov S Yu Komarov E A Romanovsky |
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Institution: | (1) Skobeltsyn Institute of Nuclear Physics, Physics Faculty Moscow State University, Moscow, 119991, Russia;(2) Moscow State University, Leninskie gory, Moscow, 119991, Russia |
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Abstract: | Investigation of the structure of the upper shells of new magic nuclei revealed an empirical regularity with the following characteristic feature: closed proton and neutron subshells, with identically large total angular momenta (j = j coupling), are located near the Fermi energy and there is a closed subshell with j = 1/2 above one of them. The properties of the nuclei exhibiting this feature of closed upper proton and neutron subshells have been investigated in detail. Quantitative manifestation of the new magicity effects, depending on the occupancy of the corresponding subshells with nucleons, has been analyzed. Several nuclei have been found, which, obviously, also have magic properties, and all classical, new magic, and nonmagic oxygen isotopes 14–48O have been considered from the new point of view. |
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