Cosmogenic-Radionuclide Profiles in Knyahinya: New Measurements and Models
Abstract
Cosmic-ray-produced nuclides measured in samples taken from known locations on a big slab of the large (R approximately equals to 45 cm) L5-chondrite Knyahinya provide good depth-vs-concentration profiles to develop and test models for the production of cosmogenic nuclides in meteorites. We report new profiles for Be-10, Al-26, Cl-36 in metallic and non-magnetic phases of 8 documented samples from Knyahinya and for C-14 in bulk samples from 7 Knyahinya samples. These new measured profiles are very similar to profiles calculated with particle fluxes from the LAHET Monte Carlo production and transport code system and with cross sections for major reactions.
- Publication:
-
Lunar and Planetary Science Conference
- Pub Date:
- March 1993
- Bibcode:
- 1993LPI....24.1195R
- Keywords:
-
- Chondrites;
- Isotopes;
- Meteoritic Composition;
- Nuclides;
- Aluminum Isotopes;
- Beryllium Isotopes;
- Carbon 14;
- Chlorine;
- Cosmic Rays;
- Monte Carlo Method;
- Space Radiation