Double beta decays of 124 Xe investigated in the QRPA framework
Double beta decays of 124 Xe investigated in the QRPA framework
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在 QRPA 框架中研究 124 Xe 的双贝塔衰变
DOI：
10.1088/0954-3899/40/7/075102
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
J. Suhonen
中科院分区：
文献类型：
--
作者：
J. Suhonen
本文研究了124 π的双中微子（2ν2β）和无中微子（0ν2β）双β衰变。考虑了~（124）Te的基态、~（124）Te和各种0+和2+激发态的衰变。用准粒子无规相近似结合多换向子模型计算了相应的核矩阵元。基于G矩阵的有效核相互作用已被用于现实的单粒子模型空间。讨论了2ν2β和0ν2β衰变的所有可能通道β+β+、β+EC和ECEC。计算了相关的半衰期，特别是对应于共振无中微子双电子捕获跃迁到2790.41 keV的核状态在124 Te。这项工作代表了迄今为止对124的双β衰变性质的最完整的理论研究。
The two-neutrino (2ν2β) and neutrinoless (0ν2β) double beta decays of 124Xe are investigated. Decays to the ground state, , and various 0+ and 2+ excited states in 124Te are considered. The corresponding nuclear matrix elements have been calculated by using the quasiparticle random-phase approximation combined with the multiple-commutator model. G-matrix-based effective nuclear interactions have been used in realistic single-particle model spaces. All possible channels, β+β+, β+EC, and ECEC, are discussed for both the 2ν2β and 0ν2β decays. The associated half-lives are computed, in particular the one corresponding to the resonant neutrinoless double electron capture transition to the 2790.41 keV nuclear state in 124Te. This work represents the most complete theoretical investigation thus far of the double-beta-decay properties of 124Xe.