Physics Letters B (Apr 2024)
Coexistence of low-K oblate and high-K prolate g9/2 proton-hole bands in 115Sb
- Shabir Dar,
- S. Bhattacharyya,
- S. Chakraborty,
- S. Jehangir,
- Soumik Bhattacharya,
- G.H. Bhat,
- J.A. Sheikh,
- N. Rather,
- S.S. Nayak,
- Sneha Das,
- S. Basu,
- G. Mukherjee,
- S. Nandi,
- R. Banik,
- S. Basak,
- C. Bhattacharya,
- S. Chattopadhyay,
- S. Das Gupta,
- A. Karmakar,
- S.S. Ghugre,
- D. Kumar,
- D. Mondal,
- S. Mukhopadhyay,
- D. Pandit,
- S. Rajbanshi,
- R. Raut
Affiliations
- Shabir Dar
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- S. Bhattacharyya
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India; Corresponding author at: Variable Energy Cyclotron Centre, Kolkata, 700064, India.
- S. Chakraborty
- Variable Energy Cyclotron Centre, Kolkata, 700064, India
- S. Jehangir
- Department of Physics, Islamic University of Science and Technology, Awantipora, 192122, India
- Soumik Bhattacharya
- Variable Energy Cyclotron Centre, Kolkata, 700064, India
- G.H. Bhat
- Department of Physics, Sri Pratap College, Srinagar, 190001, India
- J.A. Sheikh
- Department of Physics, University of Kashmir, Srinagar, 190006, India
- N. Rather
- Department of Physics, Islamic University of Science and Technology, Awantipora, 192122, India
- S.S. Nayak
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- Sneha Das
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- S. Basu
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- G. Mukherjee
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- S. Nandi
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- R. Banik
- Institute of Engineering and Management, Kolkata, 700091, India
- S. Basak
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- C. Bhattacharya
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- S. Chattopadhyay
- Saha Institute of Nuclear Physics, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- S. Das Gupta
- Victoria Institution (College), Kolkata, 700009, India
- A. Karmakar
- Saha Institute of Nuclear Physics, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- S.S. Ghugre
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, Kolkata, 700098, India
- D. Kumar
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- D. Mondal
- Variable Energy Cyclotron Centre, Kolkata, 700064, India
- S. Mukhopadhyay
- Variable Energy Cyclotron Centre, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, 400094, India
- D. Pandit
- Variable Energy Cyclotron Centre, Kolkata, 700064, India
- S. Rajbanshi
- Department of Physics, Presidency University, Kolkata, 700073, India
- R. Raut
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, Kolkata, 700098, India
- Journal volume & issue
-
Vol. 851
p. 138565
Abstract
A positive parity sequence of ΔI=2 γ transitions has been identified above Iπ=9/2+ state (Ex=2019 keV) in 115Sb through in-beam γ ray spectroscopic technique. Rotational features of this sequence are found similar to a low-K decoupled band. Observation of this newly identified low-K decoupled band, along with the earlier reported strongly coupled high-K band in this nucleus, provides the first experimental evidence for prolate-oblate shape coexistence associated with g9/2 proton-hole configuration around Z=50 shell closure. Experimental results are reproduced reasonably well in the frameworks of the projected shell model and the total Routhian surface calculations.
