Thallium-doped sodium iodide scintillation crystal radiation detector with exit surface matched with lens group

Abstract

The invention relates to a scintillation crystal radiation detector with a special light emitting surface matched with a lens group. A matched wide-angle and large-depth-of-field lens group is constructed, so the collection efficiency of the optical sensor on the scintillation light is improved and the energy resolution is improved. The specific parameter design considers the matching with the emergent wave band of the scintillation crystal, so the incident light sensor for focusing and collecting the scintillation light can be increased, the energy resolution is improved, the shape of the light emitting surface of the scintillation crystal matched with the lens group is correspondingly designed, the measurement efficiency and the measurement precision are further improved, and the detection performance can be further improved especially when a high-performance detector is developed.

Description

technical field [0001] The present invention relates to the measurement of nuclear radiation or X-ray radiation, in particular to the measurement of X-ray radiation, γ-ray radiation, particle radiation or cosmic ray radiation, in particular to a scintillation detector in which the scintillator is a crystal in radiation intensity measurement. Background technique [0002] Radiation measurement has played an important role in many fields, such as nuclear power plant radiation measurement, continuous measurement of radiation dose at the measurement site; industrial and civil buildings, building decoration, production and manufacturing of building materials, radioactivity measurement of various building materials; Geological exploration, geological prospecting and mine radiation measurement; used for ray security inspection access doors, which can provide assistance for customs, airports, border inspections, and security inspections of important meeting places; radiation measurem...

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Problems solved by technology

[0008] It should be noted that after more than three years of research in this field, the technical team of the applicant has obtained a number of technical achievements. On the same day, an application was filed to combine different technologies to form a patent layout. The existing technologies mentioned in the corresponding background technologies are not necessarily technologies that have been disclosed to the public. Prior art, therefore the technology mentioned in the background art or the claimed prior art cannot be used as evidence that the relevant technology has been known to the public, let alone evidence of common knowledge

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