Sizeable beta-strength in 31Ar(beta-3p) decay

G. T. Koldste; B. Blank; M. J. G. Borge; J. A. Briz; M. Carmona-Gallardo; L. M. Fraile; H. O. U. Fynbo; J. Giovinazzo; J. G. Johansen; A. Jokinen; B. Jonson; T. Kurturkian-Nieto; T. Nilsson; A. Perea; V. Pesudo; E. Picado; K. Riisager; A. Saastamoinen; O. Tengblad; J. -C. Thomas; J. Van de Walle

doi:10.1016/j.physletb.2014.09.015

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arXiv · 1404.2143

Sizeable beta-strength in 31Ar(beta-3p) decay

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Abstract

We present for the first time precise spectroscopic information on the recently discovered decay mode beta-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 31Ar revealing that as much as 30% of the strength resides in the beta-3p decay mode. A simplified description of how the main decay modes evolve as the excitation energy increases in 31Cl is provided.

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G. T. Koldste, B. Blank, M. J. G. Borge, J. A. Briz, M. Carmona-Gallardo, L. M. Fraile, H. O. U. Fynbo, J. Giovinazzo, J. G. Johansen, A. Jokinen, B. Jonson, T. Kurturkian-Nieto, T. Nilsson, A. Perea, V. Pesudo, E. Picado, K. Riisager, A. Saastamoinen, O. Tengblad, J. -C. Thomas, J. Van de Walle. 2014-04-08. Sizeable beta-strength in 31Ar(beta-3p) decay. https://doi.org/10.1016/j.physletb.2014.09.015

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