Maxim Pavlovich Belousov, Maxim Aleksandrovich Gorbunov, Sergey Vladimirovich Dudin, Oleg Valentinovich Ignatyev, Sergey Gennadyevich Morozov, Alexey Aleksandrovich Pulin


Results of property study of the developed high-acting scintillation spectrometer to be used in x-ray densitometer of radioactive solutions with 241Am "transmitting" radiant are presented. Fast crystals YAlO3:Ce (Æ25x0.4 and Æ25x1.0 mm) are used as scintillators. Strong energy resolution dependence of the spectrometer with thin scintillators at crystal illumination (from 16.3 to 20.3 % for a g-line 59.5 keV) is revealed. The spectrometer input count-rate is over 5·105 1/s, and spectrum accumulation speed is not lower than 2·105 1/s. Due to the conversion gain program stabilization the relative shift and the peak broadening Eγ = 59.5 keV do not exceed 0.25 % and 7.5 %, accordingly.

Keywords: YAlO3:Ce, x-ray scintillation spectrometer, thin crystal, 241Am, radioactive solutions, program stabilization, high count-rate, energy resolution.


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