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Assessment of Cs2HfCl6 crystals applicability as low-temperature scintillating bolometers by their thermodynamic characteristicsстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Dumoulin L., Giuliani A., Kandel R., Khalife H., Kuznetsov S.V., Nagorny S.S., Nahorna V.V., Nishchev K.N., Nones C., Olivieri E., Poda D.V., Popov P.A., Pynenkov A.A., Stenning G., Wang P., Zolotarova A.S.
- Журнал: Journal of Materials Chemistry С
- Том: 10
- Год издания: 2022
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 5218
- Последняя страница: 5229
- DOI: 10.1039/d1tc06166f
- Аннотация: The first study of some thermodynamic properties of a Cs2HfCl6 (CHC) scintillating crystal has beenperformed in a wide temperature range of 5–300 K. The CHC crystal exhibits a high thermal expansioncoefficient (5.17 105 at 171 K), along with an extremely low heat conductivity (1.710 W m1 K1 at50 K). A high heat capacity (1.22 J kg1 K1 at 3.8 K) along with a drastically low free mean path for phonons(about 26 Å) at temperatures around 50 K makes the CHC crystal unsuitable as a target materialfor cryogenic detectors. The results of the first operation of the CHC crystal as a cryogenic detector atsub-Kelvin temperatures clearly show the unfavorable phonon propagation properties of the material.On the other hand, the CHC crystal demonstrates excellent scintillating characteristics with a relativelyhigh light yield under gamma irradiation (the detected signal is about 5200 photons per MeV). Therefractive index within the (1.66–1.67) interval for light in visible and near-infrared spectral ranges wasmeasured at room temperature. A cost- and time-effective approach for new crystalline materialcharacterization as a target for cryogenic detectors based on the evaluation of the thermodynamicproperties of the material is proposed
- Добавил в систему: Попов Павел Аркадьевич