Resonance nuclear excitation of the $^{229}$Th nucleus via electronic bridge process in Th~II
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866910920032124928 |
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| author | Dzuba, V. A. Flambaum, V. V. |
| author_facet | Dzuba, V. A. Flambaum, V. V. |
| contents | The 8.4 eV transition in the $^{229}$Th nucleus is the basis for a high-precision nuclear clock with exceptional sensitivity to new physics effects. We have identified several cases in the Th$^+$ ion where electronic excitations closely resonate with the nuclear excitation, with the smallest energy difference being $Δ= -0.09$ cm$^{-1}$. We investigate the electronic bridge process, in which nuclear excitation is induced via electronic transitions, and demonstrate that a proper selection of laser frequencies can lead to a dramatic enhancement of this effect. Additionally, we show that the interaction with electrons significantly shortens the lifetime of the nuclear excited state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_12028 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Resonance nuclear excitation of the $^{229}$Th nucleus via electronic bridge process in Th~II Dzuba, V. A. Flambaum, V. V. Atomic Physics Nuclear Experiment The 8.4 eV transition in the $^{229}$Th nucleus is the basis for a high-precision nuclear clock with exceptional sensitivity to new physics effects. We have identified several cases in the Th$^+$ ion where electronic excitations closely resonate with the nuclear excitation, with the smallest energy difference being $Δ= -0.09$ cm$^{-1}$. We investigate the electronic bridge process, in which nuclear excitation is induced via electronic transitions, and demonstrate that a proper selection of laser frequencies can lead to a dramatic enhancement of this effect. Additionally, we show that the interaction with electrons significantly shortens the lifetime of the nuclear excited state. |
| title | Resonance nuclear excitation of the $^{229}$Th nucleus via electronic bridge process in Th~II |
| topic | Atomic Physics Nuclear Experiment |
| url | https://arxiv.org/abs/2502.12028 |