Nuclear non-resonant photoexcitation assisted by electron recombination
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866913064436105216 |
|---|---|
| author | Xue, Nan Liu, Zuoye Li, Ziwen Pálffy, Adriana Yuan, Jianmin Wu, Yuanbin Kong, Xiangjin Ma, Yu-Gang |
| author_facet | Xue, Nan Liu, Zuoye Li, Ziwen Pálffy, Adriana Yuan, Jianmin Wu, Yuanbin Kong, Xiangjin Ma, Yu-Gang |
| contents | We investigate theoretically a nuclear excitation mechanism involving absorption of non-resonant photons leveraged by the coupling to the atomic shell. The nuclear non-resonant photoexcitation is assisted by electron recombination which compensates the energy mismatch between photon and nuclear transition energies, reminiscent of parametric up-conversion in non-linear media. This third-order process proceeds via a virtual nuclear state rather than virtual electronic states, distinguishing this mechanism from the electronic bridge. We investigate the process on the example of a so-far not observed 14.2 keV hard x-ray transition in 193Pt driven by an x-ray free-electron laser. Although the calculated cross section is small, it can be compensated by the vast number of non-resonant photons from the x-ray laser pulse. By enabling nuclear excitation through non-resonant photons, this up-conversion-like mechanism suggests new directions for non-linear x-ray interactions mediated by nuclear transitions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_24045 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Nuclear non-resonant photoexcitation assisted by electron recombination Xue, Nan Liu, Zuoye Li, Ziwen Pálffy, Adriana Yuan, Jianmin Wu, Yuanbin Kong, Xiangjin Ma, Yu-Gang Nuclear Theory We investigate theoretically a nuclear excitation mechanism involving absorption of non-resonant photons leveraged by the coupling to the atomic shell. The nuclear non-resonant photoexcitation is assisted by electron recombination which compensates the energy mismatch between photon and nuclear transition energies, reminiscent of parametric up-conversion in non-linear media. This third-order process proceeds via a virtual nuclear state rather than virtual electronic states, distinguishing this mechanism from the electronic bridge. We investigate the process on the example of a so-far not observed 14.2 keV hard x-ray transition in 193Pt driven by an x-ray free-electron laser. Although the calculated cross section is small, it can be compensated by the vast number of non-resonant photons from the x-ray laser pulse. By enabling nuclear excitation through non-resonant photons, this up-conversion-like mechanism suggests new directions for non-linear x-ray interactions mediated by nuclear transitions. |
| title | Nuclear non-resonant photoexcitation assisted by electron recombination |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2604.24045 |