Measurement of photo- and radio-luminescence of thin ThF4 films
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arXiv
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866918093577519104 |
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| author | Osipenko, Mikhail Carrapico, Carlos de Almeida Burdeinyi, Dmytro Caciuffo, Roberto Eloirdi, Rachel Giovannini, Mauro Kellerbauer, Alban Malmbeck, Rikard Ripani, Marco Taiuti, Mauro |
| author_facet | Osipenko, Mikhail Carrapico, Carlos de Almeida Burdeinyi, Dmytro Caciuffo, Roberto Eloirdi, Rachel Giovannini, Mauro Kellerbauer, Alban Malmbeck, Rikard Ripani, Marco Taiuti, Mauro |
| contents | We conducted measurements on the photo- and radio-luminescence of thin ThF$_4$ films in both the UV and visible ranges. In the UV range, we found that both luminescences are at a similar level as the internal dark counting noise of the photo-multiplier-tube (PMT). Our results suggest that thin ThF$_4$ crystals could be used as a target for the search for $^{229m}$Th and as a medium for the future nuclear clock. The measurements indicate that using a small and thin ThF$_4$ film can reduce background noise while maintaining the signal at the same level, achieved by increasing the $^{229}$Th enrichment. Our developed apparatus is now ready for direct measurements of $^{229m}$Th excitation and decay in ThF$_4$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_11585 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measurement of photo- and radio-luminescence of thin ThF4 films Osipenko, Mikhail Carrapico, Carlos de Almeida Burdeinyi, Dmytro Caciuffo, Roberto Eloirdi, Rachel Giovannini, Mauro Kellerbauer, Alban Malmbeck, Rikard Ripani, Marco Taiuti, Mauro Instrumentation and Detectors Nuclear Experiment We conducted measurements on the photo- and radio-luminescence of thin ThF$_4$ films in both the UV and visible ranges. In the UV range, we found that both luminescences are at a similar level as the internal dark counting noise of the photo-multiplier-tube (PMT). Our results suggest that thin ThF$_4$ crystals could be used as a target for the search for $^{229m}$Th and as a medium for the future nuclear clock. The measurements indicate that using a small and thin ThF$_4$ film can reduce background noise while maintaining the signal at the same level, achieved by increasing the $^{229}$Th enrichment. Our developed apparatus is now ready for direct measurements of $^{229m}$Th excitation and decay in ThF$_4$. |
| title | Measurement of photo- and radio-luminescence of thin ThF4 films |
| topic | Instrumentation and Detectors Nuclear Experiment |
| url | https://arxiv.org/abs/2507.11585 |