Isospin mixing in the 4<Superscript> + </Superscript> doublet of <Superscript>54</Superscript><Emphasis Type="Italic">Co</Emphasis>期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Isospin mixing in the 4 + doublet of 54Co

Authors:	P.?von?Brentano mailto:vonBrentano@t-online.de" title=" vonBrentano@t-online.de" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,A.?F.?Lisetskiy,N.?Pietralla,A.?Schmidt,I.?Schneider,C.?Friessner

Affiliation:	(1) Institut für Kernphysik, Universität zu Köln, Zülpicherstr.77, D-50937 Koeln, Germany

Abstract:	The T = 1 admixture into the T = 0 member of a recently discovered $J^pi = 4^{ + }$ isospin-doublet in ⁵⁴Co is obtained from the measured electromagnetic E2/M1 multipole mixing ratio, of the $T = 0, 4^{ + } rightarrow T = 0, 3^{ + }$ transition. Combining these data with shell model calculations for strong isovector M1 and isoscalar E2 electromagnetic matrix elements one obtains a value for the T = 1 admixture into the T = 0, 4⁺ state of $0.23_{-0.10}^{ + 0.29}%$ . The corresponding mixing matrix element in the 4⁺ doublet is $V_{rm mix} = 10$ keV.Received: 31 October 2002, Published online: 9 March 2004PACS: 21.10.Hw Spin, parity, and isobaric spin - 21.60.Cs Shell model - 23.20.Gq Multipole mixing ratios

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