Publication: Sizeable beta-strength in ^31 Ar (β3p) decay
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2014-10-07
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Elsevier science
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Abstract
We present for the first time precise spectroscopic information on the recently discovered decay mode β-delayed 3p-emission. The detection of the 3p events gives an increased sensitivity to the high energy part of the Gamow–Teller strength distribution from the decay of ^31 Ar revealing that as much as 30% of the strength resides in the β3p-decaymode. Asimplified description of how the main decay modes evolve as the excitation energy increases in ^31 Cl is provided.
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©2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license. We thank Marek Pfützner for helpful discussion and input on the analysis of the β3p-decay of ^31 Ar. This work was supported by the European Union Seventh Framework through ENSAR (Contract No. 262010), it was partly supported by the Spanish Funding Agency under Projects No. FPA2012-32443, No. FPA2010-17142, CPAN Consolider CSD-2007-00042, and No. AIC-D-2011-0684, by the Danish Council for Inde-pendent Research Natural Sciences, by the French ANR (Contract No. ANR-06-BLAN-0320), and by Région Aquitaine. A.S. acknowl-edges support from the Jenny and Antti Wihuri Foundation.
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