Apparatus and method for measuring particle composition and direction of incidence

By using a time-delay-based synchronous measurement device for particle composition and azimuth, synchronous measurement of particle composition and azimuth was achieved using a charge-sensitive amplifier and a time measurement circuit. This solved the problems of measurement complexity and synchronization in existing technologies, and improved measurement accuracy and resolution.

CN120928416BActive Publication Date: 2026-04-17NAT SPACE SCI CENT CAS
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Patent Information

Application Number
CN202511214975.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-08-12
Publication Date
2026-04-17
Estimated Expiration
2041-08-12

AI Technical Summary

Technical Problem

Existing methods for detecting particle composition and incident azimuth are characterized by complex manufacturing processes, slow speed, low count rate, large size, heavy weight, and high power consumption. Furthermore, they cannot achieve simultaneous measurement of particle composition and azimuth in a space environment.

Method used

A time-delay-based synchronous measurement device for particle composition and azimuth angle is adopted. Four charge-sensitive amplifiers are used to distinguish and collect 32 anode positions in a 360° direction. Combined with charge output channels in the inner and outer circumferential directions, a time measurement circuit is used to achieve high-precision particle composition and azimuth angle measurement with a resolution of 22.5°.

Benefits of technology

It enables simultaneous measurement of particle composition and azimuth angle in space environment exploration, reduces instrument weight and power consumption, and improves time measurement accuracy and resolution, making it suitable for resource-constrained space exploration fields.

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Abstract

The application belongs to the technical field of space plasma environment detection, and particularly relates to a device and method for measuring particle composition and incident direction, which comprises: a detection unit array, which is respectively provided with a plurality of independent charge input channels in an inner circumferential direction and an outer circumferential direction; each charge output channel is used for outputting different initial charge pulse signals in the inner circumferential direction and different terminal charge pulse signals in the outer circumferential direction after a space charged particle is incident at an incident angle, and delay and amplification are performed respectively; and a back-end circuit analysis processing module, which is used for obtaining actual time of flight and actual incident azimuth angle time of the charged particle according to different initial pulse signals and terminal pulse signals collected for each charge output channel, obtaining the composition of the charged particle according to the obtained actual time of flight of the charged particle, and obtaining the actual incident azimuth angle of the charged particle according to the actual incident azimuth angle time.
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