Influence of atomic modeling on electron capture and shaking processes
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2021
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| Materias: | |
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| _version_ | 1866929296605446144 |
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| author | Andoche, A. Mouawad, L. Hervieux, P. -A. Mougeot, X. Machado, J. Santos, J. P. |
| author_facet | Andoche, A. Mouawad, L. Hervieux, P. -A. Mougeot, X. Machado, J. Santos, J. P. |
| contents | Ongoing experimental efforts to measure with unprecedented precision electron-capture probabilities challenges the current theoretical models. The short range of the weak interaction necessitates an accurate description of the atomic structure down to the nucleus region. A recent electron-capture modeling has been modified in order to test the influence of three different atomic descriptions on the decay and shaking probabilities. To this end, a specific atomic modeling was developed in the framework of the relativistic density-functional theory, exploring several exchange-correlation functionals and self-interaction-corrected models. It was found that the probabilities of total shaking, tested on both photoionization and electron-capture processes, depend strongly on the accuracy of the atomic modeling. Predictions of capture probabilities have been compared with experimental values evaluated from available published data for different radionuclides from $^{7}$Be to $^{138}$La. New high-precision measurements are strongly encouraged because the accuracy of the current experimental values is insufficient to test the models beyond the inner shells. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2111_15321 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Influence of atomic modeling on electron capture and shaking processes Andoche, A. Mouawad, L. Hervieux, P. -A. Mougeot, X. Machado, J. Santos, J. P. Atomic Physics Ongoing experimental efforts to measure with unprecedented precision electron-capture probabilities challenges the current theoretical models. The short range of the weak interaction necessitates an accurate description of the atomic structure down to the nucleus region. A recent electron-capture modeling has been modified in order to test the influence of three different atomic descriptions on the decay and shaking probabilities. To this end, a specific atomic modeling was developed in the framework of the relativistic density-functional theory, exploring several exchange-correlation functionals and self-interaction-corrected models. It was found that the probabilities of total shaking, tested on both photoionization and electron-capture processes, depend strongly on the accuracy of the atomic modeling. Predictions of capture probabilities have been compared with experimental values evaluated from available published data for different radionuclides from $^{7}$Be to $^{138}$La. New high-precision measurements are strongly encouraged because the accuracy of the current experimental values is insufficient to test the models beyond the inner shells. |
| title | Influence of atomic modeling on electron capture and shaking processes |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2111.15321 |