Excited states in 31S studied via beta decay of 31Cl

A. Kankainen; T. Eronen; S. P. Fox; H. O. U. Fynbo; U. Hager; J. Hakala; J. Huikari; D. G. Jenkins; A. Jokinen; S. Kopecky; I. Moore; A. Nieminen; H. Penttilä; S. Rinta-Antila; O. Tengblad; Y. Wang; J. Äystö

doi:10.1140/epja/i2005-10236-6

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A (2006) 27: 67-75
https://doi.org/10.1140/epja/i2005-10236-6

Nuclear Structure and Reactions

Excited states in ³¹S studied via beta decay of ³¹Cl

A. Kankainen¹^*, T. Eronen¹, S. P. Fox², H. O. U. Fynbo³, U. Hager¹, J. Hakala¹, J. Huikari¹, D. G. Jenkins², A. Jokinen¹, S. Kopecky¹, I. Moore¹, A. Nieminen¹, H. Penttilä¹, S. Rinta-Antila¹, O. Tengblad⁴, Y. Wang¹ and J. Äystö¹

¹ Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, Finland
² Department of Physics, University of York, YO105DD, Heslington, York, UK
³ Department of Physics and Astronomy, University of Aarhus, DK-8000, Aarhus C, Denmark
⁴ Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, E-28006, Madrid, Spain

^* e-mail: anu.kankainen@phys.jyu.fi

Received: 17 October 2005
Accepted: 6 February 2006
Published online: 17 February 2006

Abstract

The beta decay of ³¹Cl has been studied with a silicon detector array and a HPGe detector at the IGISOL facility. Previously controversial proton peaks have been confirmed to belong to ³¹Cl and a new proton group with an energy of 762(14) keV has been found. Proton captures to this state at 6921(15) keV in ³¹S can have an effect on the reaction rate of ³⁰P(p,γ) in ONe novae. Gamma rays of 1249.1(14) keV and 2234.5(8) keV corresponding to the de-excitations of the first two excited states in ³¹S have been measured. No beta-delayed protons from the IAS have been observed.

PACS: 23.20.Lv γ transitions and level energies – / 23.50.+z Decay by proton emission – / 27.30.+t 20 ⩽ A ⩽ 38 – / 29.30.Ep Charged-particle spectroscopy –

© Società Italiana di Fisica and Springer-Verlag, 2006