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Re: TLN?


A little more research and I found my own answer.

http://www.uark.edu/depts/cosmo/antarctc.htm>
Natural Thermoluminescence Survey of Antarctic Meteorites

http://www.uark.edu/depts/cosmo/ntl.htm>
Natural Thermoluminescence Projects

Here is the gist from those web pages:

   Natural thermoluminescence is light that is emitted from a sample
   during heating at low temperatures (typically <400
   C). This light reflects energy stored in certain minerals, notably the
   mineral feldspar in most meteorites and lunar samples, this energy
   coming from ionizing radiation that has passed through the minerals.

   Natural TL levels of meteorites are indicators of recent thermal
   history and terrestrial history and the data can be used to study the
   orbital/radiation history of groups of meteorites or to study the
   processes leading to the concentration of meteorites at certain sites
   in Antarctica.

-- 
          Jim Hurley
       Arachnaut's Lair
http://www.arachnaut.org/ >
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