Title :
Temperature characteristics of the radiation detector using the TlBr crystals
Author :
Shoji, T. ; Hitomi, K. ; Muroi, O. ; Suehiro, T. ; Hiratate, Y.
Author_Institution :
Tokyo Inst. of Technol., Japan
Abstract :
The radiation detector was fabricated from the TlBr crystals grown by the TMZ (travelling molten zone) method and the FWHM and transit time of electrons and holes were measured as a function of temperature. The TlBr radiation detector shows the best response characteristics at about 313 K (3.19 K/sup -1/) in cases where holes mainly contributed to the output pulses. However, for temperatures higher than 300 K (3.33 K/sup -1/), the FWHM for /sup 241/Am /spl alpha/-particles (5.48 MeV) becomes worse. An activation energy of about 0.90 eV has been deduced from the resistivity measurement.
Keywords :
alpha-particle detection; electric resistance measurement; electrical resistivity; semiconductor counters; /spl alpha/-particles; 300 K; 313 K; 5.48 MeV; FWHM; TMZ method; TlBr; TlBr radiation detector; activation energy; electron transit time; hole transit time; resistivity measurement; response; temperature; travelling molten zone method; Charge carrier processes; Crystalline materials; Crystals; Energy resolution; Fabrication; Leak detection; Leakage current; Radiation detectors; Temperature; Time measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
