Design and Ground Calibration of the Low-energy Ion Analyzer and Low-energy Electron Analyzer onboard the Chang’E-7 Mission

SU Bin; KONG Linggao; GAO Jun; LIU Chao; ZHANG Aibing; LYU Yulong; WANG Wenjing; MA Liyuan

doi:10.11728/cjss2026.02.2025-0095

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SU Bin, KONG Linggao, GAO Jun, LIU Chao, ZHANG Aibing, LYU Yulong, WANG Wenjing, MA Liyuan. Design and Ground Calibration of the Low-energy Ion Analyzer and Low-energy Electron Analyzer onboard the Chang’E-7 Mission (in Chinese). Chinese Journal of Space Science, 2026, 46(2): 1-11 doi: 10.11728/cjss2026.02.2025-0095

Citation:

SU Bin, KONG Linggao, GAO Jun, LIU Chao, ZHANG Aibing, LYU Yulong, WANG Wenjing, MA Liyuan. Design and Ground Calibration of the Low-energy Ion Analyzer and Low-energy Electron Analyzer onboard the Chang’E-7 Mission (in Chinese). Chinese Journal of Space Science, 2026, 46(2): 1-11 doi: 10.11728/cjss2026.02.2025-0095

Citation:

SU Bin, KONG Linggao, GAO Jun, LIU Chao, ZHANG Aibing, LYU Yulong, WANG Wenjing, MA Liyuan. Design and Ground Calibration of the Low-energy Ion Analyzer and Low-energy Electron Analyzer onboard the Chang’E-7 Mission (in Chinese). Chinese Journal of Space Science, 2026, 46(2): 1-11 doi: 10.11728/cjss2026.02.2025-0095

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Design and Ground Calibration of the Low-energy Ion Analyzer and Low-energy Electron Analyzer onboard the Chang’E-7 Mission

doi: 10.11728/cjss2026.02.2025-0095 cstr: 32142.14.cjss.2025-0095

SU Bin^{1, 2, 3
,},
KONG Linggao^{4, 1},
GAO Jun^{1, 2, 3},
LIU Chao^{1, 2, 3},
ZHANG Aibing^{1, 2, 3, 5},
LYU Yulong^{1, 2, 3},
WANG Wenjing^{1, 2, 3},
MA Liyuan^{1, 2, 3}

1.
National Space Science Center, Chinese Academy of Sciences, Beijing 100190
2.
Beijing Key Laboratory of Space Environment Exploration, Beijing 100190
3.
Key Laboratory of Environmental Space Situation Awareness Technology, Chinese Academy of Sciences, Beijing 100190
4.
Institute of Science and Technology for Deep Space Exploration, Suzhou Campus, Nanjing University, Suzhou 215163
5.
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049

Received Date: 2025-06-19
Rev Recd Date: 2026-01-16

Available Online: 2026-01-16

Abstract

Abstract

The Low-Energy Ion Analyzer (LEIA) and Low-Energy Electron Analyzer (LEEA), integral components of the Chang’E-7 (CE-7) lander’s lunar surface environment detection system, conduct in-situ measurements of low-energy charged particles (0.001～30 keV) to elucidate solar wind-regolith interaction mechanisms, investigate microstructure evolution in the lunar near-surface plasma environment, and support space-environment assessment for future lunar research stations. Employing identical hemispherical electrostatic analyzers with asymmetric electrostatic deflectors, both analyzers achieve wide-field detection (90° × 360° FOV), broad energy coverage, and voltage-controlled variable geometric factors. Ground calibration using standard plasma beam sources confirmed compliance with mission requirements: energy resolution <15% (ΔE/E), dynamic flux range spanning seven orders of magnitude, and angular resolution <15° × 22.5°, collectively enabling comprehensive characterization of lunar surface plasma phenomena.
- Chang’E 7,
- Low-Energy Ion Analyzer (LEIA),
- Low-Energy Electron Analyzer (LEEA),
- Plasma detection,
- Ground calibration

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References(32)

References

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Design and Ground Calibration of the Low-energy Ion Analyzer and Low-energy Electron Analyzer onboard the Chang’E-7 Mission

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Design and Ground Calibration of the Low-energy Ion Analyzer and Low-energy Electron Analyzer onboard the Chang’E-7 Mission

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