Portable radiation dose meter, dose monitoring equipment and sectional treatment method

Abstract

The invention relates to a portable radiation dose meter, dose monitoring equipment and a sectional treatment method and belongs to the technical field of radiation detection instruments. The portableradiation dose meter comprises a CZT detector, a signal processing system, a processor and a shielding case made of metal; and the CZT detector, the signal processing system and the processor are sequentially coupled to one another and are all arranged in the shielding case. Compared with the prior art, by adopting the signal processing system to perform amplification and formation on an electricsignal output by the CZT detector, and the electric signal after screening treatment is output to the processor for pre-processing, so that the amplitude, the pulse width and the like of the output signal can be changed to improve the dose linearity of the portable radiation dose meter and the dose monitoring equipment, and the higher detection efficiency of the portable radiation dose meter whenthe working voltage of the CZT detector is descended to the safety voltage of a human body is ensured.

Description

technical field [0001] The invention belongs to the technical field of radiation detection instruments, and in particular relates to a portable radiation dosimeter, dose monitoring equipment and a segmented processing method. Background technique [0002] While people are using nuclear energy and nuclear technology extensively, they are also facing special problems such as personal safety and environmental safety. Therefore, in order to ensure the safety of the public and the surrounding ecological environment in the application of nuclear technology, an environmental-grade dose rate meter is required to monitor the surrounding environmental radiation dose in real time. [0003] The probe parts of the main dosimeters currently on the market are mainly GM tubes and silicon diodes. Due to the large dead time of the GM tubes and the low detection efficiency of gamma rays, the angular response of the silicon diodes is poor and its response to gamma rays is poor. The low detecti...

AI Technical Summary

Problems solved by technology

[0004] CZT semiconductor detectors need a higher working voltage to achieve higher detection efficiency. However, for personal dosimeters for household use, based on the characteristics of safety, reliability and portability, the working voltage of the detector needs to be lowered to the safe voltage of the human body.

However, as the operating voltage of the detector decreases, its detection efficiency also decreases accordingly. Therefore, how to reduce the operating voltage of the detector to the safe voltage of the human body while ensuring the detector has a high detection efficiency has become an industry concern. Focus

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