Technical Brief

Study on Thallium bromide Radioactive Detector

[+] Author and Article Information
He Lixia

China Institute of Atomic Energy, P.O.Box 275-25, Beijing 102413, CHINA

Xiao-yong Hao

China Institute of Atomic Energy, P.O.Box 275-25, Beijing 102413, CHINA

Gaokui He

China Institute of Atomic Energy, P.O.Box 275-25, Beijing, 102413, CHINA

1Corresponding author.

ASME doi:10.1115/1.4042357 History: Received September 12, 2017; Revised December 02, 2018


Thallium bromide (TlBr) is a kind of semiconductor material. Due to its promising physical properties and can be used at room temperature, it is continually studied as X and gamma ray detectors' candidate material. Both of its atomic number and density are high. It also has large band-gap (B=2.68eV) and low ionization energy. TlBr device exhibits high detection efficiency and excellent energy resolution. It can be easily fabricated or compacted in small housing. So it is a reasonable selection in the fields of nuclear material inspection and safeguards property, national security, spatial and high energy physics researches. The paper investigates the TlBr radioactive detector development and fabrication procedures. The processing detail information and signals collection are emphasized in different section. The prototype detectors were irradiated by Am-241 and corresponding spectrum was obtained. The photoelectric peak at 59.5keV is distinguished visible and the best resolution at 59.5keV is 4.15keV (7%).

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