Cited by 184Planetary Science and ExplorationRadiation Therapy and DosimetryRadiation Effects in Electronics

First measurements of the radiation dose on the lunar surface

Open access
Zhang, Shenyi, Wimmer-Schweingruber, Robert F., Yu, Jia, Wang, Chi, Fu, Qiang, Zou, Yongliao, Sun, Yueqiang, Wang, Chunqin +28 more·2020·Science Advances

Abstract

Human exploration of the Moon is associated with substantial risks to astronauts from space radiation. On the surface of the Moon, this consists of the chronic exposure to galactic cosmic rays and sporadic solar particle events. The interaction of this radiation field with the lunar soil leads to a third component that consists of neutral particles, i.e., neutrons and gamma radiation. The Lunar Lander Neutrons and Dosimetry experiment aboard China's Chang'E 4 lander has made the first ever measurements of the radiation exposure to both charged and neutral particles on the lunar surface. We measured an average total absorbed dose rate in silicon of 13.2 ± 1 μGy/hour and a neutral particle dose rate of 3.1 ± 0.5 μGy/hour.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1126/sciadv.aaz1334

Cites

27 of 27 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Recent measurements on the Lunar surface by Chang'E 4's LND indicate an average total absorbed dose rate in silicon of approximately 13.2 mGy/h.

    “Recent measurements on the Lunar surface taken by Chang’E 4′s Lunar Lander Neutrons and Dosimetry (LND) experiment indicate an average total absorbed dose rate in silicon of approximately 13.2 mGy/h [104].”

    From Biologically-Based and Physiochemical Life Support and In Situ Resource Utilization for Exploration of the Solar System—Reviewing the Current State and Defining Future Development Needs (2021) · cites this paper as [104]

    The Results section reports an average total absorbed dose rate in silicon of 13.2 ± 1 μGy/hour, not 13.2 mGy/hour. The cited claim uses a unit 1,000 times larger than the reported value. (LLM, conf=0.94)

    Checked by a reasoning model — may be wrong.

    Experimental — accuracy not yet measured
  • LND measurements from the lunar surface in January and February 2019 showed average dose rates for neutral particles of (3.1 ± 0.5) μGy/hour and for charged particles of (10.2 ± 0.9) μGy/hour, with neutral particles contributing 23% of the total dose.

    “Accordingly, the average dose rates (corrected for the background) for neutral particles were (3.1 ± 0.5) µGy/hour and for charged particles (10.2 ± 0.9) µGy/hour; thus, the contribution of neutral particles to the total dose was 23%.”

    From Medical countermeasures for the hematopoietic-subsyndrome of acute radiation syndrome in space (2022) · cites this paper as Zhang et al., 2020

    The Results report background-corrected dose rates of 3.1 ± 0.5 μGy/hour for neutral particles and 10.2 ± 1.1 μGy/hour for charged particles, with neutral particles contributing 23 ± 8% of the total. The charged-particle uncertainty is ±1.1, not the claimed ±0.9 μGy/hour. (LLM, conf=0.94)

    Experimental — accuracy not yet measured
  • The dose equivalent inside the International Space Station during the same period was 731 μSv/day, with galactic cosmic radiation contributing 523 μSv/day, about half of the value on the Moon's surface.

    “For the further context, the authors also reported the dose equivalent inside the International Space Station (ISS) during the same time period to be 731 µSv/day with contributions of GSR of 523 µSv/day, or about half of the value on the Moon's surface.”
  • The average radiation quality factor Q(L) based on the measured LET spectrum on the lunar surface was 4.3 ± 0.7.

    “The average radiation quality factor Q(L) based on the measured LET spectrum was 4.3 ± 0.7.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. [24]H. E. Spence and Crater Science Team, An Overview of Results from the Lunar Reconnaissance Orbiter (LRO) Cosmic Ray Telescope for the Effects of Radiation (CRaTER), in Annual Meeting of the Lunar Exploration Analysis Group, LPI Contributions, 1595, 66 (2010).
  2. [34]H. K. Hills, J. W. Freeman Jr., Suprathermal Ion Detector Experiment (Lunar Ionosphere Detector), Charged-Particle Lunar Environment Experiment, in Apollo 14 Preliminary Science Report, NASA, Special Publication SP-272 (1971), pp. 175–183.
  3. [35]B. J. O’Brien, D. L. Reasoner, Charged-Particle Lunar Environment Experiment, in Apollo 14 Preliminary Science Report, NASA, Special Publication SP-272 (1971), pp. 193–213.

Cited by

Sorted by citations

Authors
Zhang, S., Wimmer-Schweingruber, R. F., Yu, J., Wang, C., Fu, Q., Zou, Y., Sun, Y., Wang, C., Hou, D., Böttcher, S. I., Burmeister, S., Seimetz, L., Schuster, B., Knierim, V., Shen, G., Yuan, B., Lohf, H., Guo, J., Xu, Z., Freiherr von Forstner, J. L., Kulkarni, S. R., Xu, H., Xue, C., Li, J., Zhang, Z., Zhang, H., Berger, T., Matthiä, D., Hellweg, C. E., Hou, X., Cao, J., Chang, Z., Zhang, B., Chen, Y., Geng, H., & Quan, Z.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Christian-Albrechts-Universität zu Kiel (DE)
  • University of Science and Technology of China (CN)
  • Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, Germany.
  • Lunar Exploration and Space Engineering Center, Beijing, PR China.
  • China Academy of Space Technology (CN)
  • Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR) (DE)
  • China Electronics Technology Group Corporation (CN)
  • Beihang University (CN)
Corresponding author
Wimmer-Schweingruber, Robert F.
Venue
Science Advances
Published
2020-09-25
Volume
6
Issue
39
ISSN
2375-2548 (ISSN-L)
OpenAlex
W3088372500
Cited by
184
References
27
Citations by year
2026: 30 · 2025: 27 · 2024: 46 · 2023: 32 · 2022: 28 · 2021: 19 · 2020: 2
FWCI
9.03
Type
journal article
Language
en
Open access
Locations
  • Science Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • elib (German Aerospace Center) (acceptedVersion)
Funders
  • Beijing Municipal Science and Technology Commission (Z181100002918003)
  • NSFC (41941001)
  • Key Research Program of the Chinese Academy of Sciences (XDPB11, QYZDB-SSW-DQC015)
  • DLR (50 JR 1604)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Planetary Science and Exploration
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Radiation Therapy and Dosimetry
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Radiation Effects in Electronics
Keywords
lunar surface radiation, space radiation exposure, galactic cosmic rays, solar energetic particle events, lunar regolith, neutron dose, gamma radiation, absorbed dose rate, Chang'e-4, human lunar exploration, astronaut radiation risk

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review