Detection method for space low-energy electrons and protons

A low-energy electron and proton technology, applied in radiation measurement, measurement device, X / γ / cosmic radiation measurement and other directions, can solve the problems of abnormal spacecraft function, logic circuit flip, data transmission error, etc. The effect of accurate measurement results

Active Publication Date: 2013-03-13
NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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Problems solved by technology

The internal charging effect can easily cause the logic circuit to flip, resulting in data transmission errors
In addition, the internal electrification effect can release a large amount of

Method used

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  • Detection method for space low-energy electrons and protons
  • Detection method for space low-energy electrons and protons
  • Detection method for space low-energy electrons and protons

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Embodiment Construction

[0023] The present invention will be described in detail below with reference to the drawings and specific embodiments, but it is not limited thereto.

[0024] Space charged particles include negatively charged negative electrons and positively charged positive particles. Due to the different electrical properties of negative electrons and positive particles, under the same magnetic field, the negative electrons and positive particles will deflect in different directions respectively;

[0025] There are many kinds of positive particles in space, but the main interference to proton detection is positrons, so you only need to exclude the influence of positrons; because the masses of protons and positrons are very different, they are incident on the same one-dimensional position for sensitive detection The energies of protons and positrons at the same position of the detector must be different, and the energy deposited in the one-dimensional position-sensitive detector is also differen...

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Abstract

The invention discloses a detection method for space low-energy electrons and protons, particularly relates to the detection method for negatrons and protons with energy ranges of 0.1-1MeV, and belongs to the field of space charged particle detection. The method includes the steps that the particles in the space are enabled to pass through the same uniform magnetic field, negative particles and positive particles deflect towards different directions and are separated; and two one-dimensional position sensitive detectors are adopted to collect the negatrons and the positive particles, the positive particles are identified to be positive electrons or protons through analysis according to generated pulse charge signal heights, and the energy of the protons are calculated according to the deflection radius and the magnetic field intensity. The method can be used for simultaneous detection on the negatrons and the protons, the detection result is accurate, the method is practicable, and relevant detector can be developed after optimal design and serve space exploration activities.

Description

Technical field [0001] The invention relates to a method for detecting low-energy electrons and protons in space, in particular to a method for detecting negative electrons and protons with an energy range of 0.1 to 1 MeV, and belongs to the field of space charged particle detection. Background technique [0002] Low-energy charged particles in the space environment are easy to deposit on the surface of the spacecraft to charge the surface of the spacecraft. Charged surfaces can cause electrostatic discharge, generate electromagnetic pulses, damage sensitive electronic components on the spacecraft, or cause functional obstacles, and even lead to the failure of the spacecraft mission. The electrons with higher energy easily penetrate the outer shell of the spacecraft and enter the spacecraft, and are deposited in the spacecraft material, causing the spacecraft to produce an internal charging effect. The internal charging effect can easily cause the logic circuit to flip and cause...

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Application Information

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IPC IPC(8): G01T1/00
Inventor 把得东杨生胜薛玉雄安恒石红杨青
Owner NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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