Measurement of photo- and radio-luminescence of thin ThF4 films
We conducted measurements on the photo- and radio-luminescence of thin ThF4 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 ThF4 crystals could be used as a target for the search for 229đť‘šTh and as a medium for the future nuclear clock. The measurements indicate that using a small and thin ThF4 film can reduce background noise while maintaining the signal at the same level, achieved by increasing the 229Th enrichment. Our developed apparatus is now ready for direct measurements of 229đť‘šTh excitation and decay in ThF4.
OSIPENKO M.;
DE ALMEIDA CARRAPIÇO Carlos;
BURDEINYJ Dmytro;
CACIUFFO R.;
ELOIRDI Rachel;
GIOVANNINI M.;
KELLERBAUER Alban;
MALMBECK Rikard;
RIPANI Marco;
TAIUTI M.;
2024-09-30
ELSEVIER BV
JRC138662
0029-554X (online),
https://doi.org/10.1016/j.nima.2024.169744,
https://www.sciencedirect.com/science/article/pii/S0168900224006703,
https://publications.jrc.ec.europa.eu/repository/handle/JRC138662,
10.1016/j.nima.2024.169744 (online),
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