Combined scintillation crystal and radiation detecting device and system including combined scintillation crystal

Abstract

The invention discloses a combined scintillation crystal and a radiation detecting device and system including the combined scintillation crystal. The combined scintillation crystal comprises a firstscintillation crystal and a second scintillation crystal. The second scintillation crystal is arranged on the external portion of the first scintillation crystal and wraps the first scintillation crystal. The second scintillation crystal is provided with a hole and a ray can pass through the hole to irradiate to the first scintillation crystal. The light output amount of the first scintillation crystal is greater than the light output amount of the second scintillation crystal. By using the combined scintillation crystal and the radiation detecting device and system including the combined scintillation crystal, a measured energy response curve can be flat so that the measurement deviation of an absorbed dose rate can be reduced.

Description

technical field [0001] The present application relates to the field of radiation detection, in particular to a combined scintillation crystal and a radiation detection device and system including the combined scintillation crystal. Background technique [0002] The descriptions in this section merely provide background information related to the disclosure in this application and may not constitute prior art. [0003] Scintillation crystal detectors can include scintillation crystals and photoelectric converters, which provide device support for nuclear physics research, radiation measurement, and nuclear medical imaging equipment research. For the measurement of X, γ and other rays, scintillation crystal detectors have significant advantages in sensitivity compared with GM tubes and semiconductor detectors. However, since scintillation crystals have different detection effects on rays of different energies, the detection efficiency is different for the research objects inj...

AI Technical Summary

Problems solved by technology

However, since scintillation crystals have different detection effects on rays of different energies, the detection efficiency is different for the research objects injected with the same dose rate, and different numbers of scintillation pulses are output, which will make the energy measured by the scintillation crystal detector The response curve is not flat, so that the measurement results of absorbed dose rate (that is, the energy absorbed by radiation per unit time after a unit mass of material is irradiated) are relatively large

[0004] At present, the following two solutions are mainly used in the prior art to solve the problem of uneven energy response curves:

For example, for the method of using multiple comparators, as the number of energy segments increases, the number of comparators used will increase exponentially, which will not only increase the circuit size and power consumption, but also increase the occupied rear The resources of the end processor increase; for the way of using the ADC, the count rate is limited due to the low sampling rate of the ADC, which will affect the performance of the scintillation crystal detector and the cost is high

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