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Fine structure in the beta-delayed proton decay of Ar-33

AuthorsHonkanen, A.; Axelsson, L.; Äystö, Juha; García Borge, María José ; Jonson, B.; Jokinen, A.; Martel, Ismael; Martínez Pinedo, Gabriel; Mukha, I. ; Nilsson, T.; Nyman, G.; Petersen, B.; Poves, Alfredo ; Smedberg, M. H.; Teijeiro, A.; Tengblad, Olof
KeywordsBeta-delayed proton decay
Shell model
Ar-33 (from 1 GeV p on Nb-foil target, selective mass separation)
Measured beta-delayed protons, Ep, Ip
Deduced relative spectroscopic amplitudes
Shell-model calculation
Gas-Si telescope spectrometer
Shell nuclei
Issue Date16-Dec-1996
CitationNuclear Physics A 611(1): 47-55 (1996)
AbstractLow-energy beta-delayed protons from Ar-33 have been measured for the first time. The data reveal states, which, despite unfavourable barrier penetrability values, strongly decay to the first excited 2+ state in S-32. The observation is discussed in terms of the standard shell model. A natural explanation is provided by the large spectroscopic amplitudes, involving s(1/2) and d(3/2) orbitals, as well as the l = 0 barrier penetrability, favouring the decay to the 2+ state.
Description9 pages, 2 figures, 2 tables.-- PACS nrs.: 21.60.Cs; 23.40.−s; 27.30.+t; 29.30.Ep.
Publisher version (URL)http://dx.doi.org/10.1016/S0375-9474(96)00313-2
Appears in Collections:(CFMAC-IEM) Artículos
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