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Two-proton decay of the isobaric analogue state of Ar-31

AuthorsMukha, I. ; Axelsson, L.; Äystö, Juha; Bergmann, U. C.; García Borge, María José ; Fraile, Luis M. ; Fynbo, H. O. U.; Honkanen, A.; Hornshøj, P.; Jading, Y.; Jonson, B.; Jokinen, A.; Martel, Ismael; Oinonen, M.; Nilsson, T.; Nyman, G.; Petersen, B.; Riisager, K.; Siiskonen, T.; Smedberg, M. H.; Tengblad, Olof ; Wenander, F.
Issue Date16-Feb-1998
CitationNuclear Physics A 630(1-2): 394-401 (1998)
AbstractWe have studied several two proton branches in the β-decay of Ar-31, the most intensive ones proceeding through the isobaric analogue state (IAS) in Cl-31. The energy and angular correlations of the two protons originating from the IAS have been measured. An indication of non-isotropic emission has been observed in the p+p+P-29 branch. The energy spectra of protons from the IAS 2p-branches seem to be continuous, which is difficult to explain by a sequential emission through a few intermediate levels in S-30. The model of non-sequential or democratic three-particle decay gives the best fit to the present data favoring the IAS spin-parity 5/2(+).
Description8 pages, 1 table, 4 figures.-- Journal issue title: "Nucleus-Nucleus Collisions".
Publisher version (URL)http://dx.doi.org/10.1016/S0375-9474(97)00777-X
Appears in Collections:(CFMAC-IEM) Artículos
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