Published October 30, 2001
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Journal Article
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Magnetic Microscopy Promises a Leap in Sensitivity and Resolution
Chicago
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Abstract
Twenty years ago, Kirschvink argued that many paleomagnetic studies were limited by the sensitivity of the magnetometer systems then in use [Kirschvink, 1981]. He showed that sedimentary rocks could preserve detrital remanent magnetizations at levels of 10^(-14) to 10^(-15) Am^2, about 100-1000 times below the noise level of today's best superconducting (SQUID) rock magnetometers. If a more sensitive magnetometer could be built, it would dramatically expand the range and variety of rock types amenable to paleomagnetic analysis. Just such an instrument is now on the horizon: the low-temperature superconductivity (LTS) SQUID Microscope.
Additional Information
© 2001 American Geophysical Union. The development of the Vanderbilt LTS SQUID microscopes has been funded in part by grants from the National Science Foundation and the National Institutes of Health. We thank W. Goree for valuable discussions.Attached Files
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