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Two-proton emission in the decay of 31Ar

✍ Scribed by L. Axelsson; J. Äystö; U.C. Bergmann; M.J.G. Borge; L.M. Fraile; H.O.U. Fynbo; A. Honkanen; P. Hornshøj; A. Jokinen; B. Jonson; I. Martel; I. Mukha; T. Nilsson; G. Nyman; B. Petersen; K. Riisager; M.H. Smedberg; O. Tengblad


Book ID
108442101
Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
985 KB
Volume
628
Category
Article
ISSN
0375-9474

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We have measured the beta-decay of 31 Ar with a high granularity setup sensitive to multiparticle decay branches. Two-proton emission is observed from the isobaric analog state in 31 Cl to the four lowest states in 29 P and furthermore from a large number of states fed in Gamow-Teller transitions. T

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Low-energy beta-delayed protons from 33Ar 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 32S. The observation is discussed in terms of the standard shell model. A natural explan