Fine structure in the beta-delayed proton decay of Ar-33
Journal article, 1996
Low-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.
deduced relative spectroscopic amplitudes
Ar-33 (from 1 GeV p on Nb-foil
Ip
measured beta-delayed protons
Gas-Si telescope spectrometer
EMISSION
selective mass separation)
target
beta-delayed proton decay
SHELL NUCLEI
shell-model calculation
Ep
shell model
Author
A. Honkanen
L. Axelsson
J. Aysto
M. J. G. Borge
Björn Jonson
Chalmers, Department of Experimental Physics, Subatomic Physics
A. Jokinen
I. Martel
G. MartinezPinedo
I. Mukha
Thomas Nilsson
Chalmers, Department of Experimental Physics, Subatomic Physics
Göran Hugo Nyman
Chalmers, Department of Experimental Physics, Subatomic Physics
B. Petersen
A. Poves
Martin Smedberg
Chalmers, Department of Experimental Physics, Subatomic Physics
A. Teijeiro
O. Tengblad
Nuclear Physics A
0375-9474 (ISSN)
Vol. 611 1 47-55Subject Categories
Subatomic Physics
DOI
10.1016/S0375-9474(96)00313-2