Elsevier

Nuclear Physics A

Volume 301, Issue 3, 5 June 1978, Pages 382-396
Nuclear Physics A

Cause of backbending in the Os region

https://doi.org/10.1016/0375-9474(78)90056-8Get rights and content

Abstract

The cause for backbending in 180–182Os and 181Re nuclei is studied using a theoretical description which includes the possibility of Coriolis antipairing (CAP), rotational alignment (RAL) and deformation jumps (DEJ). It is found that the h92 protons play no important role as advocated by Neskakis et al. Practically the total angular momentum of the system is instead found to be due to the RAL of i132 neutron pairs. To produce the backbending one needs a sudden enough RAL of i132 neutron pairs, and this RAL seems to depend on the details of the single particle levels which in turn are influenced strongly by the hexadecapole deformation. Indications are found that the γ-DEJ may also be responsible for backbending in this mass region.

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    Permanent address: Institute of Nuclear Physics, Cracow, ul. Radzikowskiego 152, Poland.

    ††

    Present address: Schuster Laboratory, Manchester University, England.

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