Second-forbidden unique. beta. decays of sup 10 Be, sup 22 Na, and sup 26 Al

A shell-model study is made of second-forbidden unique {beta} decay of {sup 10}Be, {sup 22}Na, and {sup 26}Al. Calculations were made with a {ital p}-shell interaction for {sup 10}Be and the {ital sd}-shell interaction of Wildenthal for {sup 22}Na and {sup 26}Al. The resulting second-forbidden uniqu...

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Veröffentlicht in:	Physical review. C, Nuclear physics Nuclear physics, 1992-01, Vol.45:1
1. Verfasser:	Warburton, E.K.
Format:	Artikel
Sprache:	eng
Schlagworte:	663210 - Ground-State Radioactivity- (1992-) 663520 - Nuclear Mass Ranges- A=6-19- (1992-) 663530 - Nuclear Mass Ranges- A=20-38- (1992-) ALKALI METAL ISOTOPES ALKALINE EARTH ISOTOPES ALUMINIUM 26 ALUMINIUM ISOTOPES BERYLLIUM 10 BERYLLIUM ISOTOPES BETA DECAY BETA DECAY RADIOISOTOPES BETA-MINUS DECAY BETA-MINUS DECAY RADIOISOTOPES BETA-PLUS DECAY RADIOISOTOPES DECAY ENERGY-LEVEL TRANSITIONS EVEN-EVEN NUCLEI FORBIDDEN TRANSITIONS ISOMERIC TRANSITION ISOTOPES ISOTOPES LIGHT NUCLEI M3-TRANSITIONS MATHEMATICAL MODELS MATHEMATICS MATRIX ELEMENTS MULTIPOLE TRANSITIONS NANOSEC LIVING RADIOISOTOPES NUCLEAR DECAY NUCLEAR MODELS NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEI NUMERICAL ANALYSIS ODD-ODD NUCLEI RADIOISOTOPES SECONDS LIVING RADIOISOTOPES SHELL MODELS SODIUM 22 SODIUM ISOTOPES YEARS LIVING RADIOISOTOPES
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Beschreibung
Zusammenfassung:	A shell-model study is made of second-forbidden unique {beta} decay of {sup 10}Be, {sup 22}Na, and {sup 26}Al. Calculations were made with a {ital p}-shell interaction for {sup 10}Be and the {ital sd}-shell interaction of Wildenthal for {sup 22}Na and {sup 26}Al. The resulting second-forbidden unique matrix elements are consistently larger than experiment. The ratio is discussed in terms of two effects: the collective suppression'' discussed in 1970 by Warburton, Garvey, and Towner and in-medium quenching of the spin operator. Comparison is made to similar effects for {ital M}3 transitions.
ISSN:	0556-2813 1089-490X
DOI:	10.1103/PhysRevC.45.463