Large-irradiation-area atomic oxygen beam simulation system

Abstract

The invention discloses a large-irradiation-area atomic oxygen beam simulation system. The system comprises a water-cooled electromagnetic field system, a microwave generation and transmission system, a molybdenum neutralization plate, a water cooling system, a vacuum system and a target base mechanism, wherein the water-cooled electromagnetic field system can generate a strong magnetic mirror field which can reach 1,200 gausses; the frequency of the microwave generation and transmission system is 2.45GHz and the power of the microwave generation and transmission system can reach 1,000W; the microwave generation and transmission system can excite working oxygen to ionize in the strong magnetic mirror field to generate and restrain high-density oxygen plasma; major axis length and minor axis length of the molybdenum neutralization plate are 200mm and 140mm respectively; the molybdenum neutralization plate is used for accelerating, collecting and reflecting positive ions in the plasma to form a directional atomic oxygen beam of which the sectional area diameter is more than 150mm; the water cooling system can guarantee that an atomic oxygen source can uninterruptedly and stably work for 100 hours; the vacuum system is used for guaranteeing a vacuum condition for normal work of atomic oxygen; and the target table mechanism is used for placing a test sample in an atomic oxygen beam region. The system guarantees that a device can continuously and stably run in a high atomic oxygen beam state through measures in aspects of cooling, sealing, material selection and the like. By using the system, the atomic oxygen environmental adaptation testing efficiency of an aerospace material can be greatly improved, the test period is shortened, the test cost is reduced, the technical bottleneck of component-level atomic oxygen test can be broken through, and a simulation means is provided for more effectively verifying reliability of spacecraft design.

Description

technical field [0001] The invention belongs to the field of space technology simulation environment, and in particular relates to a simulation system for simulating space atomic oxygen beams on the ground and having a larger beam cross-sectional area at the same time. Background technique [0002] The atomic oxygen environment refers to the residual gas environment in low earth orbit (usually considered to be 200-700 km altitude) with atomic oxygen. Space flight tests and ground simulation tests have shown that atomic oxygen can cause erosion and aging of spacecraft structural materials and functional degradation of functional materials, mainly manifested in the loss of material quality and thickness, changes in surface morphology, and the decline of various performance parameters, etc. every aspect. The ground simulation test is the main test verification method for the adaptability design of spacecraft space atomic oxygen environment in my country. [0003] With the dev...

AI Technical Summary

Problems solved by technology

The atomic oxygen equipment requires the sample size to be greater than Φ10mm, and samples of Φ25.4mm or 20mm×20mm are generally used in the test. In this case, the test efficiency of the above-mentioned equipment is low, which greatly restricts the application of test technology in engineering

In addition, due to the limitation of the irradiated area, some objects that need to be tested at the component level, such as solar cell arrays, cannot be tested and verified, which brings certain risks to the reliability design of the spacecraft.

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