A seminar talk entitled:
“Higher Spin Intruder Configurations of 33P” will be delivered by Ms. Rebeka Sultana Lubna, Lecturer of Physics (on study leave, PhD. Student at Florida State University, USA) Department of Mathematics and Natural Sciences (MNS), BRACU at UB#21511 on Thursday, March 15, 2018 at 11:00am.
The excited states of the 33P isotope were populated by the 18O( 18O; p 2n) 33P fusion evaporation reaction at Elab = 25 MeV. The world's then most powerful gamma detector array Gammasphere was used along with the particle detector Microball to detect the emissions in coincidence with the emitted charged particles from the compound nucleus 36S. The auxiliary detector Microball was used to select the charged particle channel and to determine the exact position and the energy of the emitted proton (and _). The purpose of finding the position and energy of proton (and _) was to determine a more precise angle between the recoil nucleus and the emitted which was later employed to get a better Doppler correction. Along with the selection of the proton channel, the coincidence technique helped to isolate 33P from the other phosphorus isotopes and also reduced the contaminations originated from the dominant pure neutron channels. A number of transitions and states was identified that were not observed before. The 4_ arrangement of the Gammasphere o_ered an excellent opportunity to measure the angular distribution of the electromagnetic emissions leading to the assignment of the spins for most of the new states. The experimental observations were compared to the shell-model calculations by using different interactions.