Candidates for Twin Chiral Bands inRh102

Abstract

Excited states in 102Rh, populated in the fusion-evaporation reaction Zr94(11B,3n)102Rh at a beam energy of 36 MeV, were studied using the Indian National Gamma Array spectrometer at Inter University Accelerator Center, New Delhi. The angular correlations and the electromagnetic character of some of the gamma-ray transitions observed were investigated in detail. A new chiral candidate sister band was found. Lifetimes of exited states in both chiral candidate bands of 102Rh were measured for the first time in the A∼100 mass region by means of the Doppler-shift attenuation technique. The derived reduced transition probabilities are compared to the predictions of the two quasiparticles plus triaxial rotor model. Both experimental results and calculations do not support the presence of static chirality in 102Rh.

Reexamining nuclear chiral geometry from the orientation of the angular momentum

“…[2][3][4][5][6][7][8]. With the prediction [9] and confirmation [10] of multiple chiral doublets (Mχ D) in a single nucleus, the investigation of chirality continues to be one of the hottest topics in nuclear physics [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

A new AMS facility at Inter University Accelerator Centre, New Delhi

“…Five standard samples having 26 Al/Al ratios of 7.444 Â 10 À11 , 3.096 Â 10 À11 , 1.065 Â 10 À11 , 4.694 Â 10 À12 and 1.818 Â 10 À12 prepared by Nishiizumi [32] were used for initial testing. Small quantities of these standards (in HNO 3 solution) were taken and a few drops of ammonia was added up to pH between 7 and 8 to precipitate aluminum as Al(OH) 3 . The precipitate was centrifuged and washed couple of times using MQ water.…”

“…IUAC Pelletron is extensively used for research in basic nuclear physics, materials science, atomic physics and radiation biology [1][2][3][4]. A superconducting linear accelerator (SC-LINAC) booster [5], 5SDH-2 Pelletron accelerator (1.7MV) and a electron cyclotron resonance (ECR) based low energy ion beam facility (LEIBF) [6] are the other accelerator facilities at the centre.…”

Microscopic resolution of the nuclear chiral conundrum with crossing twin bands in Ag106

“…The existence of chiral doublet bands have been reported experimentally in the A ∼ 80, 100, 130, and 190 mass regions of the nuclear chart; see e.g., Refs. [4][5][6][7][8][9][10][11][12][13][14][15]. In most cases, the doublet bands are separated in energy at low spins, while they approach each other with increasing spin and become approximately degenerate above a critical spin.…”