Upper concentration limits for 239 Pu traces in some "KTB"-samples and in one Hawaiian lava

Details Upper concentration limits for 239 Pu traces in some "KTB"-samples and in one Hawaiian lava Upper concentration limits for 239 Pu traces in some "KTB"-samples and in one Hawaiian lava

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gecoa..58.4759b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 58, Issue 21, pp.4759-4765

Physics

Scientific paper

Trace quantities of plutonium are observed in the environment all over the world and include both man-made 238-242 Pu and natural 239 Pu in uranium ores. Typical concentrations range from 10 -14 g Pu/g sample up to 10 -12 g Pu/g in pitchblende. We have determined some upper concentration limits for the plutonium in samples from KTB (Kontinentales Tiefbohrprogramm, Germany) which are in the range of 10 -15 down to 3 · 10 -17 g Pu/g sample. In addition, we have investigated one sample of Hawaiian lava, with a limit of 5 · 10 -15 . We could not confirm previous reports on the observation of plutonium in some Pacific lavas, nor do our results show any evidence for cold fusion neutrons producing plutonium in fluids of great depth in the crust.

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