Model for GCR-particle fluxes in stony meteorites and production rates of cosmogenic nuclides

Conference · Sun Jan 01 00:00:00 EST 1984

DOI:https://doi.org/10.1029/JB090iS02p0C722· OSTI ID:6814906

Reedy, R C

A model is presented for the differential fluxes of galactic-cosmic-ray (GCR) particles with energies above 1 MeV inside any spherical stony meteorite as a function of the meteorite's radius and the sample's depth. This model is based on the Reedy-Arnold equations for the energy-dependent fluxes of GCR particles in the moon and is an extension of flux parameters that were derived for several meteorites of various sizes. This flux is used to calculate the production rates of many cosmogenic nuclides as a function of radius and depth. The peak production rates for most nuclides made by the reactions of energetic GCR particles occur near the centers of meteorites with radii of 40 to 70 g cm/sup -2/. Although the model has some limitations, it reproduces well the basic trends for the depth-dependent production of cosmogenic nuclides in stony meteorites of various radii. These production profiles agree fairly well with measurements of cosmogenic nuclides in meteorites. Some of these production profiles are different than those calculated by others. The chemical dependence of the production rates for several nuclides varies with size and depth. 25 references, 8 figures.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6814906
• Report Number(s): LA-UR-84-1595; CONF-840385-3; ON: DE84012435
• Resource Relation: Journal Volume: 90; Journal Issue: S02; Conference: 15. lunar and planetary science conference, Houston, TX, USA, 12 Mar 1984; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
LUNAR MATERIALS
PARTICLE TRACKS
METEORITES
MILKY WAY
COSMIC RAY FLUX
CHONDRITES
COSMIC NUCLEI
COSMOCHEMISTRY
NUCLEAR REACTIONS
CHEMISTRY
COSMIC RADIATION
GALAXIES
IONIZING RADIATIONS
MATERIALS
NUCLEI
RADIATION FLUX
RADIATIONS
STONE METEORITES
640101* - Astrophysics & Cosmology- Cosmic Radiation