DEVICE FOR REGISTRATION OF IMPULSE IONISING RADIATION Russian patent published in 2009 - IPC G01T1/20 

FIELD: instrument making.

SUBSTANCE: invention is related to the field of measurement equipment, namely to measurement of ionising radiations with the help of scintillating detector, and may be used to measure time parametres of impulse ionising radiation sources. Device for registration of impulse ionising radiation comprises scintillator 1 and photoelectric multiplier 4, connected to registration device 18, voltage divider 14 and synchroniser 20, connected to impulse source of ionising radiation 19 and registration device 18, current generator 16 and light diode 3, which is optically connected to scintillator 1, and system of sensitivity stabilisation, which comprises the second light diode 23 optically connected to scintillator 1, which is connected to the second current generator 22, the following components serially connected to outlet of photoelectric multiplier - matching device 6, lower level discriminator 7, analog-digital converter 8, the first switch 5, control inlet of which is connected to control inlet of the second current generator 22, the first integrator 10, comparison circuit 11, high-voltage power supply source 12, the second integrator 13, connected to voltage divider 14, and temperature detector 17, connected to microprocessor 15, to which inlets of switches 5 and 9 are connected, as well as control inlets of current generators 16 and 22, the second inlets of the first integrator 10, comparison circuits 11 and the second current generator 22 and the second outlet of synchroniser 20.

EFFECT: higher accuracy of time intervals assessment from the beginning of electric impulse of IIRS to beginning of radiation pulse of IIRS, and also stabilisation of sensitivity under all operation conditions during the whole service life (in process of ageing and running of scintillator and PEM).

4 cl, 5 dwg