Method for carrying out spatial displacement damage effect evaluation test through high energy protons

Abstract

The invention relates to a method for carrying out a spatial displacement damage effect evaluation test through high energy protons. The method includes the following steps that firstly, internal radiation environment of a spacecraft is calculated, space environment effect calculation software is used, track parameter values of the earth track spacecraft, a space radiation environment model, the shielding thickness of the spacecraft are input, and the internal proton differential energy spectrum of the spacecraft is calculated; secondly, the protons are selected, the worked-out internal proton differential energy spectrum of the spacecraft in the track has a proton fluence peak value as the protons are not evenly distributed along with energy, and the energy proton corresponding to the fluence peak value is selected as the proton for the evaluation test; thirdly, the proton fluence phi(EI) for the test is calculated; fourthly, the radiation test is carried out, and the energy protons determined through calculation are used for radiating an element to the specified fluence. After radiation, the electricity test is carried out according to product standards and requirements.

Description

technical field [0001] The invention relates to a method for evaluating the effect of space displacement damage by using high-energy protons, which can be used to guide the performance degradation of aerospace devices caused by the displacement damage effect in the space radiation environment, and obtain data on the ability of the device to resist displacement damage. The radiation resistance hardening design provides a basis, and also provides reference data for satellite designers to select devices with radiation resistance that meet the requirements and to carry out application hardening design. Background technique [0002] High-energy particles in the space radiation environment, such as protons, are incident on the devices in the electronic system of the spacecraft, which will produce displacement damage effects, resulting in performance degradation and even failure of spacecraft devices. Spacecraft devices need to undergo displacement effect test evaluation to obtain ...

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Problems solved by technology

[0003] In the prior art, the method of using neutrons to evaluate the displacement damage of the neutron environment is given, and there is an equivalent problem of different radiation sources in the evaluation of the displacement damage caused by space protons. At present, the equivalent problem of different radiation sources has not been completely solved; Using cobalt-60γ-rays to evaluate the ionization total dose effect caused by space protons and electrons, this method is not suitable for evaluating the displacement damage effect of the space radiation environment; a single-energy proton irradiation test is given to evaluate CCD devices caused by space continuum protons displacement damage, this method does not give the optimal proton energy selection method for the spacecraft internal environment

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