Multiple chiral bands in \(^{137}\)Nd


Two new bands have been identified in \(^{137}\)Nd from a high-statistics JUROGAM II gamma-ray spectroscopy experiment. Constrained density functional theory and particle rotor model calculations are used to assign configurations and investigate the band properties, which are well described and understood. It is demonstrated that these two new bands can be interpreted as chiral partners of previously known three-quasiparticle positive- and negative-parity bands. The newly observed chiral doublet bands in \(^{137}\)Nd represent an important support to the existence of multiple chiral bands in nuclei. The present results constitute the missing stone in the series of Nd nuclei showing multiple chiral bands, which becomes the most extended sequence of odd–even and even-even nuclei presenting multiple chiral bands in the Segré chart.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: There is no data to be deposited.]


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This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme (2012–2017); by the EU 7th Framework Programme Project No. 262010 (ENSAR); by the National Key R&D Program of China (Contract No. 2018YFA0404400 and No. 2017YFE0116700), by the National Natural Science Foundation of China (Grants No. 11621131001 and No. 11875075); by the GINOP-2.3.3-15-2016-00034, National Research, Development and Innovation Office NKFIH, Contracts No. PD 124717 and K128947; by the Polish National Science Centre (NCN) Grant No. 2013/10/M/ST2/00427; by the Swedish Research Council under Grant No. 621-2014-5558; and by the National Natural Science Foundation of China (Grants No. 11505242, No. 11305220, No. U1732139, No. 11775274, and No. 11575255), and by the National Sciences and Engineering Research of Canada. The use of germanium detectors from the GAMMAPOOL is acknowledged. The work of Q.B.C. is supported by Deutsche Forschungsgemeinschaft (DFG) and National Natural Science Foundation of China (NSFC) through funds provided to the Sino-German CRC 110 “Symmetries and the Emergence of Structure in QCD” (DFG Grant No.  TRR110 and NSFC Grant No. 11621131001). I.K. was supported by National Research, Development and Innovation Office NKFIH, contract number PD 124717. The authors are indebted to M. Loriggiola for his help in target preparation.

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Correspondence to C. M. Petrache or B. F. Lv.

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Communicated by Navin Alahari

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Petrache, C.M., Lv, B.F., Chen, Q.B. et al. Multiple chiral bands in \(^{137}\)Nd. Eur. Phys. J. A 56, 208 (2020).

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