Exploring the structure of Xe isotopes in A ~ 130 region: Single particle and collective excitations
Variable Energy Cyclotron Centre, 1/AF Bidhannagar, Kolkata 700064, India.
2 Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai- 400094, India.
3 GANIL, CEA/DRF-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France.
4 Department of Physics, Presidency University, Kolkata 700073, India.
5 Saha Institute of Nuclear Physics, Kolkata 700064, India.
6 UGC-DAE CSR, Kolkata Centre, Kolkata 700098, India.
7 Victoria Institution (College), Kolkata 700009, India.
* e-mail: email@example.com
Published online: 6 April 2020
High and medium spin structures of 130,131Xe have been studied using α-induced fusion-evaporation reaction and the Indian National Gamma Array (INGA) coupled with a digital data acquisition system. Various new band structures and near yrast levels of 131Xe have been established. The multipolarities of the observed transitions have been assigned on the basis of the DCO ratios and the polarization asymmetry measurements. Band structures based on 1-quasi-particle (qp), 3-qp configurations have been observed. A new Magnetic Rotational (MR) band based on 5-qp configuration has also been established in 131Xe. The MR band has been interpreted in terms of shears mechanism with principal axis cranking (SPAC) calculations. Shell Model calculations are carried out to describe the non yrast states of 131Xe above the 11/2− isomer. New excited states have also been identified in 130Xe, produced in the same reaction.
© The Authors, published by EDP Sciences, 2020
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