Collective and broken pair states of 65,67Ga

Danko, I. and Sohler, D. and Dombradi, Zs. and Brant, Slobodan and Krstić, Vladimir and Cederkall, J. and Lipoglavšek, M. and Palacz, M. and Persson, J. and Atac, A. and Fahlander, C. and Grawe, H. and Johnson, A. and Kerek, A. and Klamra, W. and Kownacki, J. and Likar, A. and Norlin, L.-O. and Nyberg, J. and Paar, Vladimir and Schubart, R. and Seweryniak, D. and Vretenar, Dario and de Angelis, G. and Bednarczyk, P. and Foltescu, D. and Jerrestam, D. and Juutinen, S. and Makela, E. and Nyako, B. M. and de Poli, M. and Roth, H. A. and Shizuma, T. and Skeppstedt, O. and Sletten, G. and Tormanen, S. (1999) Collective and broken pair states of 65,67Ga. Physical Review C, 59 (5). pp. 1956-1974. ISSN 0556-2813

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Abstract

Excited states of 65Ga and 67Ga nuclei were populated through the 12C(58Ni,αp) and 12C(58Ni,3p) reactions, respectively, and investigated by in-beam γ-ray spectroscopic methods. The NORDBALL array equipped with a charged particle ball and 11 neutron detectors was used to detect the evaporated particles and γ rays. The level schemes of 65,67Ga were constructed on the basis of γγ-coincidence relations up to 8.6 and 10 MeV excitation energy, and Iπ=27/2 and 33/2+ spin and parity, respectively. The structure of 65,67Ga nuclei was described in the interacting boson-fermion plus broken pair model, including quasiproton, quasiproton-two-quasineutron, and three-quasiproton fermion configurations in the boson-fermion basis states. Most of the states were assigned to quasiparticle + phonon and three quasiparticle configurations on the basis of their electromagnetic decay properties.

Item Type: Article
Keywords: nuclear structure, excited states, 65Ga, 67Ga, interacting boson-fermion plus broken pair model
Date: April 1999
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (1999) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119211
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 14 May 2014 16:07
Last Modified: 14 May 2014 16:08
URI: http://digre.pmf.unizg.hr/id/eprint/1303

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