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Krypton and xenon in Apollo 14 samples - Fission and neutron capture effects in gas-rich samplesGas-rich Apollo 14 breccias and trench soil are examined for fission xenon from the decay of the extinct isotopes Pu-244 and I-129, and some samples have been found to have an excess fission component which apparently was incorporated after decay elsewhere and was not produced by in situ decay. Two samples have excess Xe-129 resulting from the decay of I-129. The excess is correlated at low temperatures with excess Xe-128 resulting from neutron capture on I-127. This neutron capture effect is accompanied by related low-temperature excesses of Kr-80 and Kr-82 from neutron capture on the bromine isotopes. Surface correlated concentrations of iodine and bromine are calculated from the neutron capture excesses.
Document ID
19780062799
Document Type
Conference Proceedings
Authors
Drozd, R. (Washington Univ. Saint Louis, MO, United States)
Hohenberg, C. (Washington Univ. Saint Louis, MO, United States)
Morgan, C. (Washington University St. Louis, Mo., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1975
Subject Category
LUNAR AND PLANETARY EXPLORATION
Meeting Information
Lunar Science Conference(Houston, TX)
Funding Number(s)
CONTRACT_GRANT: NGL-26-008-065
Distribution Limits
Public
Copyright
Other