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Study of luminescent mechanism in cesium hafnium chloride scintillator
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SYSNO ASEP 0521871 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Study of luminescent mechanism in cesium hafnium chloride scintillator Author(s) Král, Robert (FZU-D) RID, ORCID
Vaněček, Vojtěch (FZU-D) ORCID
Páterek, Juraj (FZU-D) ORCID
Jarý, Vítězslav (FZU-D) RID, ORCID
Buryi, Maksym (FZU-D) RID, ORCID
Babin, Vladimir (FZU-D) RID, ORCID
Kodama, S. (JP)
Kurosawa, S. (JP)
Yokota, Y. (JP)
Yoshikawa, A. (JP)
Nikl, Martin (FZU-D) RID, ORCID, SAINumber of authors 11 Source Title Proceedings of the international conference on scintillating materials and their applications /15./ (SCINT 2019). - Sendai : Tohoku University, 2019 Number of pages 1 s. Publication form Print - P Action International conference on scintillating materials and their applications /15./ (SCINT 2019) Event date 29.09.2019 - 04.10.2019 VEvent location Sendai Country JP - Japan Event type WRD Language eng - English Country JP - Japan Keywords cesium hafnium chloride ; crystal growth ; luminescence Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GJ18-17555Y GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 Annotation The cesium hafnium chloride Cs2HfCl6 (CHC) has been recently studied as a prospective material for cost effective detectors of ionizing radiation. Its high light yield up to 54 000 ph/MeV, energy resolution of 3.3 % at 662 keV, scintillation response of 4.4 us at 662 keV, and density of 3.86 g/cm3 together with its low hygroscopicity makes it a suitable candidate for scintillating applications. Two emission bands in CHC peaking at 375 and 435 nm were ascribed to CHC structure itself originating in self-trapped exciton and to Zr impurity arising from the contamination of raw HfCl4, respectively. However, luminescent mechanism and composition of the emission peak still remain unclear. In this work we deal with preparation and crystal growth of undoped CHC by vertical Bridgman method and its further characterization by the optical, luminescence, scintillating, and magnetic methods. The goal is to reveal and distinguish emission overlap of the Hf- and Zr-based emission centers.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020
Number of the records: 1