Speaker
Mr
Saikat Chakraborty
(Banaras Hindu University)
Description
Nuclear meta-stable states with long half-lives are known as isomers. Systematically, rotational bands above one-quasineutron isomeric states were reported in odd-A Te-Xe-Ba isotopes around A = 130. Isomeric states with three-quasiparticle configurations are also expected in these nuclei, but reported only in 129Ba, 131,133Xe. Also, an isomeric state at 2730 keV, with T1/2 = 25 ns, was reported in 127Xe without spin and parity assignment. Therefore, in-beam γ-ray spectroscopy was carried out to infer the structure of this state. Excited states of 127Xe were populated via 122Sn(9Be, 4nγ) reaction at Inter-University Accelerator Centre, New Delhi. Fourteen Compton suppressed clover detectors of Indian National Gamma Array were used to collect the two- and higher fold coincident γ-events. INGAsort and RadWare packages were used for offline data analysis. From this investigation, spin and parity of the present isomeric state have been assigned unambiguously. Two new decay paths of this state have also been identified. Structural features of this isomer will be discussed during the conference.
Primary author
Mr
Saikat Chakraborty
(Banaras Hindu University)
Co-authors
Dr
Ashok Kumar
(Panjab University, Chandigarh, India)
Ms
Chandrani Majumder
(Banaras Hindu University, Varanasi)
Prof.
Hariprakash Sharma
(BANARAS HINDU UNIVERSITY)
Mr
Mayank Singh
(Amity University, Noida, India)
Prof.
Polash Banerjee
(Saha Institute of Nuclear Physics)
Ms
Pragati Popli
(Indian Institute of Technology, Roorkee, India)
Dr
Rajesh Pratap Singh
(Inter-University Accelerator Centre, New Delhi, India)
Prof.
Rudrajyoti Palit
(Tata Institute of Fundamental Research, Mumbai, India)
Mr
SHASHI SHEKHER TIWARY
(BANARAS HINDU UNIVERSITY)
Mr
Siddharth Rai
(Visva-Bharati, Santiniketan, India.)
Dr
Sivaramakrishnan Muralithar
(Inter-University Accelerator Centre, New Delhi, India)
Dr
Soumendu S Bhattacharjee
(Inter-University Accelerator Centre, New Delhi, India)
Dr
Sourav Ganguly
(Bethune College, Kolkata, India)
Dr
Suresh Kumar
(University of Delhi, New Delhi, India)
