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 47-55

Subject Categories

Subatomic Physics

DOI

10.1016/S0375-9474(96)00313-2

More information

Created

10/7/2017