Shape evolution in odd-A 137 Pm

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 48; no. 3
• Main Authors: Dhal, A., Sinha, R. K., Negi, D., Trivedi, T., Raju, M. K., Choudhury, D., Mohanto, G., Kumar, S., Gehlot, J., Kumar, R., Nath, S., Ghugre, S. S., Singh, R. P., Das, J. J., Muralithar, S., Madhavan, N., Gupta, J. B., Sinha, A. K., Jain, A. K., Govil, I. M., Bhowmik, R. K., Pancholi, S. C., Chaturvedi, L.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2012
• Subjects: Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Regular Article - Experimental Physics; Total Routhian Surface; Yrast Band; Intensity Anisotropy; Signature Partner; Incident Beam Energy
• ISSN: 1434-6001; 1434-601X
• DOI: 10.1140/epja/i2012-12028-3

The odd mass nucleus 137 Pm has been studied to high spins through the 109 Ag( 32 S, 2p2n) 137 Pm reaction at an incident beam energy of 150 MeV. The de-exciting γ -rays were detected using an array of 18 Compton suppressed clover detectors. The level scheme of 137 Pm has been extended up to and excitation energy of E x ≅ 6 MeV with the observation of 42 new gamma transitions. The linear polarization (IPDCO) measurements for the γ -ray transitions have been done for the first time. The spin and parity assignments for most of the reported levels have been made using these results and the coincidence angular anisotropy (R DCO ) measurements. The nuclear shape evolution is discussed in the light of Total Routhian Surface (TRS) and Cranked Shell Model (CSM) calculations.