Compound detection device

Abstract

The embodiment of the application discloses a compound detection device. The compound detection device comprises a detecting unit, a signal processing unit and an imaging unit; the detecting unit comprises a plastic scintillator, an inorganic scintillation crystal array and a photoelectric converter array in sequence; the plastic scintillator is used for receiving a radioactive ray sent by a target sample and generating a corresponding first visible light signal; the inorganic scintillation crystal array is used for receiving the radioactive ray sent by a target sample and generating a corresponding second visible light signal; the photoelectric converter array is used for separately converting the first visible light signal and the second visible light signal into a first electrical signal and a second electrical signal; the signal processing unit is used for processing the first electrical signal and the second electrical signal to determine the type of the radioactive ray; and, theimaging unit is used for imaging the target sample according to the signal processing result of the signal processing unit. By adoption of compound detection device provided by the embodiment of the application, the beta ray and the high-energy gamma ray can be detected at the same time.

Description

technical field [0001] The present application relates to the field of radiation detection, in particular to a compound detection device. 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] Radiation detectors can be widely used in nuclear medicine, security inspection, astrophysics, autoradiography and other fields. At present, in the field of autoradiography, the existing radiation detectors mainly include the following types: [0004] (1) Radiation detectors using plastic scintillators and charge-coupled devices (CCDs), which mainly use radioactive isotopes of β-rays (for example, 14 C. 35 S, 32 P etc.) etc. are used as radioactive tracers, and its spatial resolution can reach tens of microns, but the dynamic detection range of this radiation detector is small, and the sensitivity is low, and it is impossible to detect gamma rays wi...

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Problems solved by technology

[0004] (1) Radiation detectors using plastic scintillators and charge-coupled devices (CCDs), which mainly use radioactive isotopes of β-rays (for example, 14 C. 35 S, 32 P etc.) etc. are used as radioactive tracers, and its spatial resolution can reach tens of microns, but the dynamic detection range of this radiation detector is small, and the sensitivity is low, and it is impossible to detect gamma rays with energy exceeding 30keV. Suitable for detection of gamma rays with higher energy and higher cost

[0005] (2) A radiation detector using fluorescent phosphor screen technology, which mainly detects β-rays and gamma-rays with lower energy (for example, below 511keV), but this radiation detector is also not suitable for detecting radiation with higher energy (e.g., above 511keV) gamma rays for detection

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