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Signature splitting in the positive parity bands of \(^{{127}}\hbox {Xe}\)

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Abstract

Rotational bands built on positive parity \( s_{1/2} \), \( d_{3/2} \), and \( g_{7/2} \) valence neutron orbitals in \( ^{127}\hbox {Xe}\) have been investigated via in-beam \( \gamma \) ray spectroscopy. Excited states belonging to these one-quasineutron bands were populated via \(^{122} \hbox {Sn}( ^{9} \hbox {Be}, \hbox {4n} \gamma \)) fusion-evaporation reaction at a beam energy of 48 MeV. The level scheme has been updated by extending the low-lying rotational bands up to higher spin states, as well as, by assigning the spin/parity of the constituting energy levels. Signature splitting of low-j\( \nu s_{1/2} \), \( \nu d_{3/2} \) and high-j\( \nu g_{7/2} \) bands have been discussed in comparison to the neighbouring nuclei. Theoretical Modified Particle Rotor Model (MPRM) calculations have been carried out in order to study the microscopic structure of these bands.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: All data generated during this study are contained in this published article.]

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Acknowledgements

Authors are thankful to the staff of target lab and pelletron accelerator facility of IUAC, New Delhi. The efforts from INGA collaboration is thankfully acknowledged. The INGA facility is partly funded by the Department of Science and Technology of Government of India vide project no. IR/S2/PF-03/2003-I. The first author (S.C.) acknowledges the Council of Scientific & Industrial Research (CSIR), India, for Senior Research Fellowship (file no. 9/13(662)/2017-EMR-I).

Author information

Correspondence to H. P. Sharma.

Additional information

Communicated by S. Bhattacharya.

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Chakraborty, S., Sharma, H.P., Tiwary, S.S. et al. Signature splitting in the positive parity bands of \(^{{127}}\hbox {Xe}\). Eur. Phys. J. A 56, 50 (2020). https://doi.org/10.1140/epja/s10050-020-00066-3

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