Results 201 to 210 of about 102,116 (247)

Instrumental Neutron Activation Analysis of Chang'E-5 Lunar Regolith Samples.

Journal of the American Chemical Society, 2022
The Chang'E-5 (CE-5) lunar samples were analyzed nondestructively for more than 40 elements by instrumental neutron activation analysis (INAA) with a strict quality assurance and quality control.
Yonggang Yao, Caijin Xiao, Pingsheng Wang, Chunlai Li, Qin Zhou   +4 more
semanticscholar   +1 more source

Isotopic Variability of Nitrogen in Lunar Regolith

Science, 2001
Hashizume et al . ([1][1]) claim that the distribution and isotopic composition of nitrogen in the lunar regolith can be explained by a two-component mixing model. Their report, however, fails to discuss the bulk of existing relevant data—data that show unequivocally that the conclusions in ([1 ...
openaire   +2 more sources

Rock Fragments in Shallow Lunar Regolith: Constraints by the Lunar Penetrating Radar Onboard the Chang'E‐4 Mission

Journal of Geophysical Research: Planets, 2021
It is generally believed that the top centimeters of mature lunar regolith should be dominated by fine particles that contain few rocky fragments, but surface fragments are occasionally visible in mature lunar regolith.
C. Ding, Zhiyong Xiao, Bo Wu, Zhaojin Li, Yan Su, Bin Zhou, Kaijun Liu, J. Cui   +7 more
semanticscholar   +1 more source

The extent of lunar regolith mixing

Earth and Planetary Science Letters, 1979
The activity of solar cosmic-ray-produced Mn-53 measured as a function of depth in the upper 100 g/sq cm of lunar cores 60009-60010 and 12025-12028 is discussed. Analyses of samples from the Apollo 15 and 16 drill stems together with authors' previously published results (1974, 1976), and the Battelle Na-22 and Al-26 data, indicate that in three of the
K. Nishiizumi, M. Imamura, C.P. Kohl, M.T. Murrell, J.R. Arnold, G.P. Russ   +5 more
openaire   +1 more source

Lunar Regolith Particles In Outposts

AIAA SPACE 2009 Conference & Exposition, 2009
The US, India, China, Japan, and Europe plan for future crewed lunar missions. While mission architecture may be superficially similar to the American Apollo program of the 1960s and 1970s, future missions will vary considerably from that precedent in duration and complexity.
François Lévy, Constance Adams, Georgi Petrov   +2 more
openaire   +1 more source

Noble gases in the lunar regolith

Chinese Journal of Geochemistry, 2003
The most fundamental character of lunar soil is its high concentrations of solar-wind-implanted elements, and the concentrations and behavior of the noble gases He, Ne, Ar, and Xe, which provide unique and extensive information about a broad range of fundamental problems.
Zou Yongliao, Xu Lin, Ouyang Ziyuan
openaire   +1 more source

Water Formation in the Lunar Regolith

Cosmic Research, 2019
This study shows that oxygen atoms can be released from a crystal lattice of silicon dioxide in the lunar regolith as parts of silver hydroxide molecules. In turn, silver hydroxide can relatively easily react with hydrogen to generate water and silver. This means that the formation of water molecules involved in near-surface lunar soil is possible. The
A. Yu. Dubinskii, S. I. Popel
openaire   +1 more source

The chemistry of carbon in the lunar regolith

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1977
Abstract The current status of knowledge concerning the chemistry of carbon in the lunar regolith is discussed. The respective roles of the solar wind and micrometeorite impact in contributing carbon and providing energy to stimulate chemical reactions and mobilize carbon phases are examined.
Colin Trevor Pillinger, Geoffrey Eglinton   +1 more
openaire   +1 more source

Properties and Mechanics of the Lunar Regolith

Applied Mechanics Reviews, 1993
Knowledge of the lunar regolith is essential to success in lunar missions whether crewed or robotic. The regolith is the loose material overlying more intact strata on the Moon. It varies in thickness from several meters on the maria or lunar seas to many meters on the highlands of the Moon.
Stewart W. Johnson, Koon Meng Chua
openaire   +1 more source

Geomechanical Properties of Lunar Regolith Simulants LHS-1 and LMS-1

Advances in Space Research, 2023
J. Long-Fox, Z. Landsman, Parks Easter, C. Millwater, D. Britt   +4 more
semanticscholar   +1 more source