论文标题
$^{129} $ CD的衰减光谱
Decay Spectroscopy of $^{129}$Cd
论文作者
论文摘要
$^{129} $的激发态在加拿大Triumf的ISAC设施的Griffin光谱仪实验研究了$β$ -DECAY的$β$ -DECAY。使用离子导量激光离子源（IG-LIS）提取了一个480-MEV质子束，并在碳化铀靶标上撞击铀梁。 $β$ - 和$γ$ - 在$^{129} $ CD衰减之后的砂量使用Griffin光谱仪检测到，其中包括塑料闪烁体Sipperar和16个高纯净也（HPGE）三叶草型探测器。 ％，以及$β$ - 粒子一起使用Sceptar检测到。从$β$ - $γ$ - $γ$巧合分析中，建立了32个新的过渡和7个新的激发态，扩大了先前已知的级别计划$^{129} $ in。从$β$ - 喂养强度中得出的$ log ft $值表明，某些高倾斜状态由$ν0g_ {7/2} \ rightArrowπ0g_ {9/2} $ Gamow-gamow-gamow-thiss允许的gog-teller（gt）过渡，这表明允许的GT过渡比以前的$^repartion necrition necy n ofer^necriped^n necrition^n necrition^repartion^repartion^reportion^repartion，观察零散的游戏性游戏强度与理论计算一致。
Excited states of $^{129}$In populated following the $β$-decay of $^{129}$Cd were experimentally studied with the GRIFFIN spectrometer at the ISAC facility of TRIUMF, Canada. A 480-MeV proton beam was impinged on a uranium carbide target and $^{129}$Cd was extracted using the Ion Guide Laser Ion Source (IG-LIS). $β$- and $γ$-rays following the decay of $^{129}$Cd were detected with the GRIFFIN spectrometer comprising the plastic scintillator SCEPTAR and 16 high-purity germanium (HPGe) clover-type detectors. %, along with the $β$-particles were detected with SCEPTAR. From the $β$-$γ$-$γ$ coincidence analysis, 32 new transitions and 7 new excited states were established, expanding the previously known level scheme of $^{129}$In. The $\log ft$ values deduced from the $β$-feeding intensities suggest that some of the high-lying states were populated by the $ν0 g_{7/2} \rightarrow π0 g_{9/2}$ allowed Gamow-Teller (GT) transition, which indicates that the allowed GT transition is more dominant in the $^{129}$Cd decay than previously reported. Observation of fragmented Gamow-Teller strengths is consistent with theoretical calculations.
