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26 April 2024

» pubmed » pmid11290167

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Rotational bands in the proton emitter (141)Ho
D Seweryniak ; P J Woods ; J J Ressler ; C N Davids ; A Heinz ; A A Sonzogni ; J Uusitalo ; W B Walters ; J A Caggiano ; M P Carpenter ; J A Cizewski ; T Davinson ; K Y Ding ; N Fotiades ; U Garg ; R V Janssens ; T L Khoo ; F G Kondev ; T Lauritsen ; C J Lister ; P Reiter ; J Shergur ; I Wiedenhöver ;
Date:	19 Feb 2001
Journal:	Phys Rev Lett, 86 (8), 1458-61
Abstract:	Rotational bands feeding the ground state and the isomeric state in the proton emitter (141)Ho were observed using the recoil-decay tagging method. This constitutes direct evidence that (141)Ho is deformed. A quadrupole deformation of beta(2) = 0.25(4) was deduced for the ground state from the extracted dynamic moment of inertia. Based on observed band crossings and signature splittings the 7/2(-)[523] and 1/2(+)[411] configurations were proposed for the ground state and the isomeric state, respectively. Comparison with particle-rotor calculations for beta(2) = 0.25 indicates, however, that (141)Ho may have significant hexadecapole deformation and could be triaxial in the 7/2(-)[523] ground state.
Source:	PubMed, pmid11290167
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