Multiple chiral doublets in four-\(j\) shells particle rotor model: five possible chiral doublets in \(^{136}_{~60}\)Nd\(_{76}\)

A particle rotor model, which couples nucleons in four single-\(j\) shells to a triaxial rotor core, is developed to investigate the five pairs of nearly degenerate doublet bands recently reported in the even-even nucleus \(^{136}\)Nd. The experimental energy spectra and available \(B(M1)/B(E2)\) va...

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Bibliographic Details
Published inarXiv.org
Main Authors Chen, Q B, Lv, B F, Petrache, C M, Meng, J
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 16.05.2018
Subjects
Angular momentum
Chirality
Energy spectra
Nucleons
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Summary:A particle rotor model, which couples nucleons in four single-\(j\) shells to a triaxial rotor core, is developed to investigate the five pairs of nearly degenerate doublet bands recently reported in the even-even nucleus \(^{136}\)Nd. The experimental energy spectra and available \(B(M1)/B(E2)\) values are successfully reproduced. The angular momentum geometries of the valence nucleons and the core support the chiral rotation interpretations not only for the previously reported chiral doublet, but also for the other four candidates. Hence, \(^{136}\)Nd is the first even-even candidate nucleus in which the multiple chiral doublets exist. Five pairs of chiral doublet bands in a single nucleus is also a new record in the study of nuclear chirality.
ISSN:2331-8422
DOI:10.48550/arxiv.1805.06162