Low- and medium-spin negative-parity bands in the 187Os nucleus
PHYSICAL REVIEW C(2021)
Abstract
Low- and medium-spin negative-parity bands of Os-187 have been studied using the AFRican Omnipurpose Detector for Innovative Techniques and Experiments (AFRODITE) array, following the W-186(He-4, 3n) Os-187 reaction at a beam energy of 37 MeV. In the current work, all the previously known bands have been significantly extended and three new bands have been added to the level scheme. The angular distribution ratio (R-AD) and polarization measurements have been used to assign spin and parity to the observed new levels. The configurations of some of the bands have been modified. The observed bands are interpreted within the cranked shell model (CSM) and cranked Nilsson-Strutinsky-Bogoliubov (CNSB) formalism. Comparison with experimental data shows good agreements. Systematic comparison with the neighboring Os-185 isotope is also discussed.
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Key words
os187 nucleus,bands,medium-spin,negative-parity
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