Structure of the 11/2(-) analog state in Nb-91 populated by the Zr-90(alpha, t) reaction

Authors
van der Molen, HKT Akimune, H van den Berg, AM Daito, I Fujimura, H Fujita, Y Fujiwara, M Harakeh, MN Ihara, F Inomata, T Ishibashi, K Janecke, J Kalantar-Nayestanaki, N Laurent, H Lhenry, I O'Donnell, TW Rodin, VA Tamii, A Toyokawa, H Urin, MH Yoshida, H Yosoi, M
Citation
Hkt. Van Der Molen et al., Structure of the 11/2(-) analog state in Nb-91 populated by the Zr-90(alpha, t) reaction, PHYS LETT B, 502(1-4), 2001, pp. 1-8
Citations number
28
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
502
Issue
1-4
Year of publication
2001
Pages
1 - 8
Database
ISI
SICI code
0370-2693(20010315)502:1-4<1:SOT1AS>2.0.ZU;2-A
Abstract
Decay via proton emission of isobaric analog states (IAS's) in Nb-91 was st udied using the Zr-90(alpha, t) reaction at E-alpha = 180 MeV. This study p rovides information about the damping mechanism of these states. Decay to t he ground state and low-lying phonon states in 90Zr was observed. The exper imental data are compared with theoretical predictions wherein the IAS 'sin gle-particle' proton escape widths are calculated in a continuum RPA approa ch. The branching ratios for decay to the phonon states are explained using a simple model. (C) 2001 Published by Elsevier Science B.V.