Indirect measurement method for extreme-ultraviolet source irradiance for simulating space environment

A space environment simulation, irradiance technology, applied in the field of irradiance measurement, can solve the problems of unsuccessful measurement, irradiance measurement not seen, etc., to achieve the effect of improving rationality, simple measurement equipment, and easy operation

Inactive Publication Date: 2009-06-10
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology

However, there is no relevant report on the measurement of irradiance
The domestic research work on far-ultraviolet mainly focuses on the measurement of the radiance of light sources. With the joint efforts of the Institute of Metrology and the National Sync

Method used

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  • Indirect measurement method for extreme-ultraviolet source irradiance for simulating space environment
  • Indirect measurement method for extreme-ultraviolet source irradiance for simulating space environment
  • Indirect measurement method for extreme-ultraviolet source irradiance for simulating space environment

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Embodiment Construction

[0023] The testing method of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] Refer to attached figure 1 , wherein the far ultraviolet light emitted by the measured irradiation light source 1 forms a circular light spot 2 on the target stage (not shown), the far ultraviolet detector 3 can move in the light spot 2 and is electrically connected to the microgalvanometer 4, the microgalvanometer The ammeter 4 can measure and read microcurrent.

[0025] First, measure the far-ultraviolet radiance of the measured radiation source, and determine the spectral radiance value L(λ) in the strongest direction, where λ is the wavelength. Measurements can be made by comparison with a pre-calibrated light source, or by synchrotron radiation metrology.

[0026] Irradiance measurements such as figure 1 As shown, the measured radiation source 1 produces a light spot 2 on the target platform, and the far-ultraviolet detect...

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Abstract

The invention discloses a method that measures far ultraviolet irradiance for spatial environmental simulation, comprising steps of: determining a spectral radiance brightness in the strongest direction in a facula generated by the irradiation source; measuring micro-current at the strongest point in a facula and calculating spectral radiance at the point under single wave according to the pectral radiance brightness; solving the pectral radiance in a total wavelength scale as a reference spectral radiance; measuring micro-current at other positions in the facula and obtaining radiance at other positions according to direct proportion of the current and radiance. The measuring method of the invention is simple to operate, and has simple measuring device and low cost. The method at the same time is widely applied to irradiance measurement of far ultraviolet for spatial environmental simulation.

Description

technical field [0001] The invention belongs to the field of irradiance measurement, and in particular relates to a method for measuring far-ultraviolet irradiance used for space environment simulation. Background technique [0002] The current detectors whose response range is in the far ultraviolet band are very limited, and their response curves are not very flat, so the total energy of the optical signal in this band cannot be equivalent to the photocurrent signal output of the detector. Therefore, it is almost impossible to measure the far-ultraviolet irradiance directly with the detector. [0003] In addition, in the current field of space irradiation, the determination of the irradiance level is generally based on the data provided by the irradiation source manufacturer to roughly calculate the average irradiance within the range of the spot. However, due to the inhomogeneity of the general light source irradiation, At the same time, there is a certain dispersion in ...

Claims

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Application Information

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IPC IPC(8): G01J1/42
Inventor 郑慧奇冯伟泉丁义刚刘宇明赵雪曹大朋
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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