An isospin-mixed triplet in 44Ti
An isospin-mixed triplet in 44Ti
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44Ti 中的同位旋混合三重态
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
J. Simpson
中科院分区：
文献类型：
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作者：
W. R. Dixon;R. S. Storey;J. Simpson
在~（40）Ca（α，γ）反应中，研究了~（44）Ti中能量为9215 ± 2，9227 ± 2，9239 ± 2keV的三个能级。 伽马射线的分支比，角分布和过渡强度已被测量为每个级别。质子衰变强度也已确定。每一级都被指定为Jπ = 2+。 在9227 keV的能级必须主要是T = 1，因为它的强M1衰变，而其他两个能级被认为主要是T = 0，因为它们更强的E2跃迁到基态。 把这三个能级看作是一个同位旋混合的三重态，对所有的实验数据给出了一致的解释，并允许对同位旋混合量和等矢量矩阵元的大小进行定量估计。
Three levels in 44Ti at energies of 9215 ± 2, 9227 ± 2, and 9239 ± 2 keV have been studied in the 40Ca(α,γ) reaction. Gamma-ray branching ratios, angular distributions, and transition strengths have been measured for each level. Proton decay strengths have also been determined. Each level is assigned Jπ = 2+. The level at 9227 keV must be predominantly T = 1 because of its strong M1 decays, while the other two levels are believed to be predominantly T = 0 because of their stronger E2 transitions to the ground state. Treating the three levels as an isospin-mixed triplet gives a consistent interpretation for all the experimental data, and allows quantitative estimates to be made of the amount of isospin mixing and of the magnitude of the isovector matrix elements.