论文标题
新颖的penning-trap技术在$^{128} $中揭示异构状态，$^{130} $首次
Novel Penning-trap techniques reveal isomeric states in $^{128}$In and $^{130}$In for the first time
论文作者
论文摘要
$^{128} $中的异构态在Igisol设施的Jyfltrap Penning陷阱中研究了$^{130} $。通过采用新颖的离子操纵技术，分开了不同的状态，并测量了六个β下费状态的质量。 Jyfltrap还用于选择感兴趣的离子以识别陷阱后衰变光谱站。一个新的beta付费高旋转异构体为$^{128} $ sn的$ 15^ - $ isomer喂食，以$^{128} $ in $ 1797.6（20）$ kev中发现了$^{128} $。使用扰动G-Matrix方法将CD-BONN电位重新归一致的CD-BONN电位的壳型计算表明，这种新的异构体是$ 16^+$ $ spin陷阱异构体。在$^{130} $中，最低的$（10^ - ）$ isomeric状态为$ 58.6（82）$ kev首次使用相像的离子回旋谐振技术解决。 $ 10^ - $和$ 1^ - $状态之间的能源差，源于$（π0G_{9/2}^{ - 1}）\ otimes（ν0H__{11/2}}^{ - 1}^by shash by 200 k的$（π0G_{9/2}^{ - 1}）\ otimes（π0g_{9/2}^{ - 1}）$（shore）的$（π0G_{9/2}^{ - 1}）$之间的能量差。关于这项工作中确定的激发态能量的精确信息对于在$^{132} $ sn附近的核壳模型描述中产生新的改进有效相互作用至关重要。
Isomeric states in $^{128}$In and $^{130}$In have been studied with the JYFLTRAP Penning trap at the IGISOL facility. By employing novel ion manipulation techniques, different states were separated and masses of six beta-decaying states were measured. JYFLTRAP was also used to select the ions of interest for identification at a post-trap decay spectroscopy station. A new beta-decaying high-spin isomer feeding the $15^-$ isomer in $^{128}$Sn has been discovered in $^{128}$In at $1797.6(20)$ keV. Shell-model calculations employing a CD-Bonn potential re-normalized with the perturbative G-matrix approach suggest this new isomer to be a $16^+$ spin-trap isomer. In $^{130}$In, the lowest-lying $(10^-)$ isomeric state at $58.6(82)$ keV was resolved for the first time using the phase-imaging ion cyclotron resonance technique. The energy difference between the $10^-$ and $1^-$ states in $^{130}$In, stemming from parallel/antiparallel coupling of $(π0g_{9/2}^{-1})\otimes(ν0h_{11/2}^{-1})$, has been found to be around 200 keV lower than predicted by the shell model. Precise information on the energies of the excited states determined in this work is crucial for producing new improved effective interactions for the nuclear shell model description of nuclei near $^{132}$Sn.
