Method for determining the irradiation dose deposited in a scintillator by ionising radiation and associated device

摘要

Method of determination of an irradiation dose deposited in a scintillator (5) by ionising radiation, comprising the steps of:
irradiating the scintillator (5) during a predetermined time;detecting a moment of excitation of the scintillator (5) with a first photodetector (11); thendetecting a moment of reception of a scintillation photon with a second photodetector (14), functioning in single photon counting mode;identifying each sequence consisting of the detection of a moment of excitation by the first photodetector (11), and the detection of a moment of reception by the second photodetector (14) with a coincidence event;counting the number of coincidence events;obtaining the irradiation dose deposited during the irradiation time as a function of the number of coincidence events counted and of a predetermined proportionality factor.

主权项

1. A method of determination of an irradiation dose deposited in a scintillator by ionising radiation, the method comprising:
irradiating the scintillator with the ionising radiation for a predetermined time, each interaction between the ionising radiation and the scintillator exciting the scintillator and giving rise to an emission of scintillation photons; detecting a moment of excitation of the scintillator by the ionising radiation using a first photodetector, wherein the detection of the excitation moment of the scintillator comprises reception of at least one scintillation photon emitted by the scintillator; then detecting a moment of reception of a scintillation photon emitted by the scintillator using a second photodetector operating in single photon counting mode; identifying each sequence consisting of the detection of a moment of excitation by the first photodetector followed by the detection of a moment of reception by the second photodetector with a coincidence event; counting the number of coincidence events detected during the predetermined irradiation time; and obtaining the irradiation dose deposited in the scintillator during the predetermined irradiation time as a function of the number of coincidence events counted and of a predetermined proportionality factor.