Precise measurement of the scintillation decay constant of the ZnWO4 crystal. (21st October 2021)

• Record Type: Journal Article
• Authors: Shibata, M; Sekiya, H; Ichimura, K
• Is Part Of: Progress of theoretical and experimental physics. Volume 2022:Number 1(2022)
• Publication Date: 2021-10-21
• Subjects: Physics -- Periodicals; Mathematical physics -- Periodicals; 530.05
• DOI: 10.1093/ptep/ptab132
• Languages: English
• ISSNs: 2050-3911

Abstract

Abstract: The scintillation decay time constant of a ZnWO4 crystal irradiated with α-particles from 241 Am was precisely investigated, and was found to depend on the incident direction of the α-particles on the crystal. The longest decay time constant (24.3 ± 0.6 μs) was obtained on the surface perpendicular to the b -axis of the crystal (surface B). On surfaces A and C, the decay constants were 20.0 and 21.3 ± 0.2 μs, respectively. The scintillation yield of ZnWO4 was also anisotropic and depended on the incident direction of the heavy particles. The maximum yield was achieved on surface B, suggesting a correlation between the light yield and the scintillation decay time constant of ZnWO4 crystals.