Mathematics – Logic
Scientific paper
Dec 1972
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ssrv...14....3l&link_type=abstract
Space Science Reviews, Volume 14, Issue 1, pp.3-102
Mathematics
Logic
18
Scientific paper
Recent examinations of extraterrestrial materials exposed to cosmic rays for different intervals of time during the geological history of the solar system have generated a wealth of new information on the history of cosmic radiation. This information relates to the temporal variations in
(i)
the flux and energy spectrum of low energy (solar) protons of ⩾ 10 MeV kinetic energy;
(ii)
the flux and energy spectrum of (solar) heavy nuclei of Z > 20 of kinetic energy, 0.5 10 MeV/n;
(iii)
the integrated flux of protons and heavier nuclei of ⩾ 0.5 GeV kinetic energy, and
(iv)
the flux and energy spectrum of nuclei of Z > 20 of medium energy — 100 2000 MeV/n kinetic energy. The above studies are entirely based on the natural detector method which utilises two principal cosmogenic effects observed in rocks, (i) isotopic changes and (ii) changes in the crystalline structure of rock constituents, due to cosmogenic interactions. The information available to date in the field of hard rock cosmic ray archaeology refers to meteorites and lunar rocks/soil. Additional information based on study of cosmogenic effects in man-made materials exposed to cosmic radiation in space is also discussed. It is shown that the natural detectors inspite of their extreme simplicity have begun to provide cosmic ray information in a very quantitative and precise manner comparable to the most sophisticated electronic particle detectors. The single handicap in using the hard rock detectors is however the uncertainty regarding their manner of exposure, geometry etc. At present, a variety of techniques are being used to study the evolutionary history of extraterrestrial materials and as this field grows, uncertainties in cosmic ray archaeology will correspondingly decrease.
No associations
LandOfFree
Hard Rock Cosmic Ray Archaeology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hard Rock Cosmic Ray Archaeology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hard Rock Cosmic Ray Archaeology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1641210