A Data Extraction Method for Spatial Resolution Radiation Flow Detection Technology

Abstract

The invention discloses a data extraction method of space resolution radiation flow detection technology. In this method, the radiation flow intensity is calculated by first calculating the area of ​​the quasi-radiation source equivalent to the detector and the equivalent quasi-field angle of the detector. The method extracts the radiation flow measurement data of the local area on the surface of the radiation source through the spatially resolved radiation flow detection technology, and can give the radiation flow intensity of the relevant area concisely and strictly quantitatively. This method does not need to consider the impact of the spatial inhomogeneity of luminous flux caused by pinhole imaging on the correctness of quantitative calculations, and the calculation process quantities such as the equivalent quasi-radiation source area of ​​the detector and the equivalent quasi-field angle of the detector, etc. In the experimental process, it is a necessary reference for detector setting and adjustment to be reasonable and reliable, and has real physical significance in diagnostics. This method has broad and important application prospects in inertial confinement fusion, weapon physics, high energy density physics and laboratory astrophysics.

Description

technical field [0001] The invention belongs to the field of X-ray measurement, and in particular relates to a data extraction method of space resolution radiation flow detection technology. Background technique [0002] Radiation flow measurements are very widely used in inertial confinement fusion, weapons physics, high energy density physics, and laboratory astrophysical science research. In indirect-driven inertial confinement fusion ICF, the laser-driven black cavity can convert laser energy into near-Planck spectrum soft X-rays, and the measured X-rays can be used to deduce the radiation temperature, which is the most important source of black cavity radiation It is also one of the parameters for exploring the physical process of laser-black cavity interaction. However, the spatially resolved detection of the X-ray radiation flow in a specific region (non-spot, spot or pellet) inside the black cavity is an unresolved and very important problem in indirectly driven ICF...

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Problems solved by technology

[0003] However, the data processing of the existing space-resolved radiation flow detection technology has the following deficiencies: 1. Because the light emitted by the target is projected onto the detector through the pinhole, and the size of the front hole of the detector is limited, so the radiation source The luminous flux to the detector is different, and the traditional data processing method ignores this, so the processing result is not reliable; 2. Based on the spatial analysis data processing method, the luminous flux is calculated point by point for the radiation source, and the data processing process is cumbersome , the physical image of the processing result is fuzzy and complex, not intuitive, and not conducive to analysis

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