Development of X-ray-induced afterglow characterization system

作者：Yanagida, Takayuki^*; Fujimoto, Yutaka; Ito, Takashi; Uchiyama, Koro; Mori, Kuniyoshi

来源：Applied Physics Express, 2014, 7(6): 062401.

DOI：10.7567/APEX.7.062401

• SCINTILLATORS
• ER3+
• ND3+
• TM3+
• EMISSION
• CRYSTALS
• DETECTOR

To evaluate the X-ray-induced afterglow phenomenon, we developed an ionizing-radiation-induced luminescence characterization system equipped with a pulse-width-tunable X-ray source. The system consists of a pulse X-ray tube and a detector system based on photon counting. The excitation pulse width was tunable from nano- to millisecond ranges, and the dynamic range of the X-ray-induced afterglow was 10(6). Conventional scintillators for X-ray CT or security systems, namely, Bi4Ge3O12, CdWO4, TI-doped Csl, and Tb and Pr-codoped Gd2O2S, were evaluated for the performance test. Results show that the afterglow time profiles of these scintillators are consistent with generally known results with high accuracy.

• 出版日期2014-6