Data extraction method of spatial resolution radiation flow detection technology

Abstract

The invention discloses a data extraction method of a spatial resolution radiation flow detection technology. The method comprises the steps that, firstly, the area of a quasi-radiation source equivalent to a detector and the opening angle of a quasi-field of view equivalent to the detector are calculated; and then the radiation flow intensity is calculated. According to the method, data of radiation flow measurement of a local area on the surface of the radiation source is extracted through a spatial resolution radiation flow detection technology, and the radiation flow intensity of a relatedarea can be simply, clearly, strictly and quantitatively obtained. According to the method, the influence of nonuniform luminous flux space caused by pinhole imaging on the quantitative calculation correctness does not need to be considered; and the calculation process variables such as the equivalent quasi-radiation source area of the detector and the equivalent quasi-field-of-view opening angleof the detector are necessary references for reasonable and reliable setting and adjustment of the detector in the experiment process, and have actual physical significance in diagnostics. The methodhas wide and important application prospects in inertial confinement fusion, weapon physics, high-energy density physics and laboratory celestial body physics.

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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