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Two-proton emission in the decay of Ar-31

L. Axelsson ; J. Aysto ; U. C. Bergmann ; M. J. G. Borge ; L. M. Fraile ; H. O. U. Fynbo ; A. Honkanen ; P. Hornshoj ; A. Jokinen ; Björn Jonson (Institutionen för experimentell fysik, Subatomär fysik) ; I. Martel ; I. Mukha ; Thomas Nilsson (Institutionen för experimentell fysik, Subatomär fysik ; Extern) ; Göran Nyman (Institutionen för experimentell fysik, Subatomär fysik) ; B. Petersen ; K. Riisager ; Martin Smedberg (Institutionen för experimentell fysik, Subatomär fysik) ; O. Tengblad
Nuclear Physics A (0375-9474). Vol. 628 (1998), 3, p. 345-362.
[Artikel, refereegranskad vetenskaplig]

Several beta-delayed two-proton branches were observed in the decay of Ar-31, the most intense ones proceeding through the isobaric analogue state (IAS) in Cl-31. The mechanism of the two-proton emission is studied via the energy and angular distributions of the two protons, Simultaneous emission of the two protons fits the present data well, sequential decays might also describe them. Independent of the decay mechanism, a spin of 5/2 for the IAS is suggested, An improved limit on the direct two-proton emission fi om the ground state of Ar-31 is presented, (C) 1998 Elsevier Science B.V.

Nyckelord: radioactivity Ar-31(beta(+)p) [from Ca(p,3pxn) reaction], measured, beta-delayed E-p, pp-coin, Ar-31 deduced beta 2p-decay channels, CaO, target, surface barrier Si detectors, on-line mass separation, DELAYED 2-PROTON EMISSION, 3-PARTICLE DECAYS, NUCLEI, SYSTEMATICS, AL-22, BE-6

Denna post skapades 2006-08-28. Senast ändrad 2014-09-02.
CPL Pubid: 10864


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