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The frequency dependence of the viscous component of the magnetic susceptibility of lunar rock and soil samplesThe susceptibility of two lunar samples (a soil and a low metamorphic grade breccia) has been measured in a weak field - 0.001 Oe - and as a function of frequency from 0.032 to 1.0 Hz. The measurements were made using a superconducting magnetometer. The results show that the susceptibility decreases linearly with the log of frequency. This observation is in agreement with a theoretical model for viscous decay based on the Neel theory of single-domain and superparamagnetic grains. The relation derived agrees with a model in which there is a uniform distribution of relaxation times.
Document ID
19760061903
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hanneken, J. W.
(Houston Univ. TX, United States)
Vant-Hull, L. L.
(Houston, University Houston, Tex., United States)
Carnes, J. G.
(Lockheed Electronics Co. Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
September 1, 1976
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 32
Issue: 1, Se
Subject Category
Lunar And Planetary Exploration
Accession Number
76A44869
Funding Number(s)
CONTRACT_GRANT: NGR-44-005-162
Distribution Limits
Public
Copyright
Other

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