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Possible Magnetic Rotational Bands in 84^Rb

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arxiv 2011.04897 v1 pith:WQDOMBRB submitted 2020-11-07 nucl-ex hep-ex

Shuifa Shen , Jiejie Shen , Guangbing Han , Shuxian Wen , Yupeng Yan , Haibing Jiang , Zhixiong He , Yaodong Song
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Weiwei Gao Jieqing Lan
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classification nucl-exhep-ex
keywords bandsmagneticrotationalstatesthreetransitionsanalogyassigned
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High-spin states in 84Rb are studied by using the 70Zn(18O, p3n)84Rb reaction at a beam energy of 75 MeV. Three high-lying negative-parity bands are established, whose level spacings are very regular, i.e., there is no signature splitting. The dipole character of the transitions of these three bands is assigned by the gamma-gamma directional correlations of oriented states (DCO) intensity ratios and the multipolarity M1 is suggested by analogy with multiparticle excitations in neighboring nuclei. Strong M1 and weak or no E2 transitions are observed. All these characteristic features show they are magnetic rotational bands.

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