Author:
Hitomi Keitaro,Kim Cheonghun,Nogami Mitsuhiro,Shimazoe Kenji,Takahashi Hiroyuki
Abstract
Abstract
The coincidence time resolutions of thallium bromide chloride (TlBr
x
Cl1−x
) crystals used as Cherenkov radiators were characterized. A pair of TlBr
x
Cl1−x
crystals with the same composition was used to coincidentally detect positron annihilation gamma rays from a 22Na source. The size of the crystals was approximately 3 mm × 3 mm × 3 mm. A polished surface of the crystals was coupled to a silicon photomultiplier. The time resolution improved with an increase in the Cl concentration in the crystals. TlBr0.3Cl0.7 crystals exhibited the best coincidence time resolutions of 378 ± 17 ps and 635 ± 31 ps with and without event selection based on the photoelectron level, respectively.
Subject
General Physics and Astronomy,General Engineering
Cited by
3 articles.
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