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| Natura: | Preprint |
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2025
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| Accesso online: | https://arxiv.org/abs/2508.17538 |
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| _version_ | 1866916920259772416 |
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| author | Liu, Peifan Gerharz, Miriam Marx-Glowna, Berit Hippler, Willi Pudell, Jan-Etienne Zozulya, Alexey Stone, Brandon Shu, Deming Loetzsch, Robert Sadashivaiah, Sakshath Bocklage, Lars Boemer, Christina Liu, Shan Kocharyan, Vitaly Krebs, Dietrich Long, Tianyun Qin, Weilun Scholz, Matthias Schlage, Kai Sergeev, Ilya Wille, Hans-Christian Boesenberg, Ulrike Geloni, Gianluca Aldo Hallmann, Jörg Jo, Wonhyuk Kujala, Naresh Madsen, Anders Rodriguez-Fernandez, Angel Rysov, Rustam Tasca, Kelin Kolodziej, Tomasz Zhang, Xiwen Ilchen, Markus Wieland, Niclas Huber, Günter Edgar, James H. Evers, Jörg Kocharovskaya, Olga Röhlsberger, Ralf Shvyd'ko, Yuri |
| author_facet | Liu, Peifan Gerharz, Miriam Marx-Glowna, Berit Hippler, Willi Pudell, Jan-Etienne Zozulya, Alexey Stone, Brandon Shu, Deming Loetzsch, Robert Sadashivaiah, Sakshath Bocklage, Lars Boemer, Christina Liu, Shan Kocharyan, Vitaly Krebs, Dietrich Long, Tianyun Qin, Weilun Scholz, Matthias Schlage, Kai Sergeev, Ilya Wille, Hans-Christian Boesenberg, Ulrike Geloni, Gianluca Aldo Hallmann, Jörg Jo, Wonhyuk Kujala, Naresh Madsen, Anders Rodriguez-Fernandez, Angel Rysov, Rustam Tasca, Kelin Kolodziej, Tomasz Zhang, Xiwen Ilchen, Markus Wieland, Niclas Huber, Günter Edgar, James H. Evers, Jörg Kocharovskaya, Olga Röhlsberger, Ralf Shvyd'ko, Yuri |
| contents | The $^{45}$Sc nuclear transition from the ground to the isomeric state at 12.389~keV, with a lifetime of 0.46~s, exhibits an extraordinarily narrow natural width of 1.4~feV and a quality factor $\simeq 10^{19}$ -- surpassing those of the most precise atomic clocks -- making $^{45}$Sc a compelling platform for advanced metrology and nuclear clocks. Here we investigate how closely the spectral width and quality factor of the solid-state $^{45}$Sc resonance can approach these natural limits. Using the European X-ray Free-Electron Laser, we confirm the isomer's lifetime via time-delayed incoherent $K_{α,β}$ fluorescence and observe previously unreported elastic fluorescence, yielding a partial internal conversion coefficient of 390(60). The absence of a clear nuclear forward scattering signal beyond a 2-ms delay implies environmental broadening of at least $500~Γ_{0}$ under experimental conditions, placing bounds on solid-state decoherence mechanisms. These findings set new experimental benchmarks for solid-state nuclear clock development. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_17538 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing the Linewidth of the 12.4-keV Solid-State $^{45}$Sc Isomeric Resonance Liu, Peifan Gerharz, Miriam Marx-Glowna, Berit Hippler, Willi Pudell, Jan-Etienne Zozulya, Alexey Stone, Brandon Shu, Deming Loetzsch, Robert Sadashivaiah, Sakshath Bocklage, Lars Boemer, Christina Liu, Shan Kocharyan, Vitaly Krebs, Dietrich Long, Tianyun Qin, Weilun Scholz, Matthias Schlage, Kai Sergeev, Ilya Wille, Hans-Christian Boesenberg, Ulrike Geloni, Gianluca Aldo Hallmann, Jörg Jo, Wonhyuk Kujala, Naresh Madsen, Anders Rodriguez-Fernandez, Angel Rysov, Rustam Tasca, Kelin Kolodziej, Tomasz Zhang, Xiwen Ilchen, Markus Wieland, Niclas Huber, Günter Edgar, James H. Evers, Jörg Kocharovskaya, Olga Röhlsberger, Ralf Shvyd'ko, Yuri Quantum Physics Other Condensed Matter Nuclear Experiment Optics The $^{45}$Sc nuclear transition from the ground to the isomeric state at 12.389~keV, with a lifetime of 0.46~s, exhibits an extraordinarily narrow natural width of 1.4~feV and a quality factor $\simeq 10^{19}$ -- surpassing those of the most precise atomic clocks -- making $^{45}$Sc a compelling platform for advanced metrology and nuclear clocks. Here we investigate how closely the spectral width and quality factor of the solid-state $^{45}$Sc resonance can approach these natural limits. Using the European X-ray Free-Electron Laser, we confirm the isomer's lifetime via time-delayed incoherent $K_{α,β}$ fluorescence and observe previously unreported elastic fluorescence, yielding a partial internal conversion coefficient of 390(60). The absence of a clear nuclear forward scattering signal beyond a 2-ms delay implies environmental broadening of at least $500~Γ_{0}$ under experimental conditions, placing bounds on solid-state decoherence mechanisms. These findings set new experimental benchmarks for solid-state nuclear clock development. |
| title | Probing the Linewidth of the 12.4-keV Solid-State $^{45}$Sc Isomeric Resonance |
| topic | Quantum Physics Other Condensed Matter Nuclear Experiment Optics |
| url | https://arxiv.org/abs/2508.17538 |