12-14 March 2018
TIFR, Mumbai
Asia/Kolkata timezone
FIG 2018
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Isomers and associated rotational bands in 127Xe
Presented by Mr. Saikat CHAKRABORTY
Type: Poster
Content
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.
Place
Location: TIFR, Mumbai
Room: AG66
Co-authors
- Prof. Hariprakash SHARMA BANARAS HINDU UNIVERSITY
- Ms. Chandrani MAJUMDER Banaras Hindu University, Varanasi
- Mr. SHASHI SHEKHER TIWARY BANARAS HINDU UNIVERSITY
- Prof. Polash BANERJEE Saha Institute of Nuclear Physics