Fine structure in the beta-delayed proton decay of Ar-33
Artikel i vetenskaplig tidskrift, 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

Författare

A. Honkanen

L. Axelsson

J. Aysto

M. J. G. Borge

Björn Jonson

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

A. Jokinen

I. Martel

G. MartinezPinedo

I. Mukha

Thomas Nilsson

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

Göran Hugo Nyman

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

B. Petersen

A. Poves

Martin Smedberg

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

A. Teijeiro

O. Tengblad

Nuclear Physics A

0375-9474 (ISSN)

Vol. 611 47-55

Ämneskategorier

Subatomär fysik

DOI

10.1016/S0375-9474(96)00313-2