探测 12.4-keV 固态 $^{45}$Sc 同位素共振的 linewidth
量子物理
2025-08-28 v2 其他凝聚态物理
核实验
光学
摘要
Sc 核过渡从基态到能量为 12.389~keV 的同位素态，其寿命为 0.46~s，表现出额外窄的自然宽度为 1.4~feV，信质因子 ——超过最精确原子钟的信质因子，使 Sc 成为先进计量学和核时钟的有力平台。本文中，我们研究固态 Sc 共振的谱宽和信质因子能接近这些自然极限的程度。利用欧洲 X 射线自由电子激光器，我们通过时间延迟的非一致性 荧光确认同位素的寿命，并观察到此前未报告的弹性荧光，给出部分内部转换系数为 390(60)。未检测到 2-ms 延迟后清晰的核前向散射信号，暗示在实验条件下环境宽度至少为 ，为固态核时钟开发设定了新的实验基准。
引用
@article{arxiv.2508.17538,
title = {Probing the Linewidth of the 12.4-keV Solid-State $^{45}$Sc Isomeric Resonance},
author = {Peifan Liu and Miriam Gerharz and Berit Marx-Glowna and Willi Hippler and Jan-Etienne Pudell and Alexey Zozulya and Brandon Stone and Deming Shu and Robert Loetzsch and Sakshath Sadashivaiah and Lars Bocklage and Christina Boemer and Shan Liu and Vitaly Kocharyan and Dietrich Krebs and Tianyun Long and Weilun Qin and Matthias Scholz and Kai Schlage and Ilya Sergeev and Hans-Christian Wille and Ulrike Boesenberg and Gianluca Aldo Geloni and Jörg Hallmann and Wonhyuk Jo and Naresh Kujala and Anders Madsen and Angel Rodriguez-Fernandez and Rustam Rysov and Kelin Tasca and Tomasz Kolodziej and Xiwen Zhang and Markus Ilchen and Niclas Wieland and Günter Huber and James H. Edgar and Jörg Evers and Olga Kocharovskaya and Ralf Röhlsberger and Yuri Shvyd'ko},
journal= {arXiv preprint arXiv:2508.17538},
year = {2025}
}
备注
9 pages, 4 figures, 2 tables