Multiparticle emission in the decay of Ar-31

A multihit capacity setup was used to study the decay of the dripline nucleus Ar-31, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the beta-delayed three-proton decay of Ar-31 is presented for the first time together with a quantitative analysis of the beta-delayed 2p gamma decay. A new method for determination of the spin of low-lying levels in the beta p daughter 30S using proton-proton angular correlations is presented and used to determine that the spin of the 5.2-MeV level is most likely 3(+) with 4(+) also possible. The half-life of Ar-31 is found to be 15.1(3) ms. An improved analysis of the Fermi beta strength including the beta 3p-decay mode gives a total measured branching ratio of 3.60(44)%, which is lower than the theoretical value found to be 4.24(43)%. Finally, a previously unidentified. transition from the isobaric analog state in the decay of Ar-33 has been found.

Blank, B. (author)
Borge, M. J. G. (author)
Briz, J. A. (author)
Carmona-Gallardo, M. (author)
Fraile, L. M. (author)
Fynbo, H. O. U. (author)
Giovinazzo, J. (author)
Grann, B. D. (author)
Johansen, J. G. (author)
Jokinen, A. (author)
Jonson, Björn,1941Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)bjn (author)
Kurturkian-Nieto, T. (author)
Kusk, J. H. (author)
Nilsson, Thomas,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)tnilsson (author)
Perea, A. (author)
Pesudo, V. (author)
Picado, E. (author)
Riisager, K. (author)
Saastamoinen, A. (author)
Tengblad, O. (author)
Thomas, J. C. (author)
Van de Walle, J. (author)
Chalmers tekniska högskola (creator_code:org_t)

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Subatomic Physic ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.