INC Model interpretation of the proton induced residual nuclide production cross sections below 2 GeV
- Brookhaven National Lab., Upton, NY (United States)
- York Coll., Jamaica, NY (United States)
For the purposes of interpreting the abundances of various isotopes in meteorites or on lunar and planetary surfaces exposed to fragmentation by cosmic rays, Webber et al. recently reported the measured total elemental and isotopic cross sections with heavy ions as projectiles on H, He, and C targets with beam energies of 0.33 - 1.7 GeV/nucleon. We employ the INC model to predict the fragmentation of the heavy ions in a hydrogen target with the inverse reaction process: proton bombardment of a heavy-ion nucleus leading to spallation products. Charge-changing and mass-changing cross sections are calculated for proton bombardment of an {sup 56}Fe target with beam energies ranging from 0.33 to 1.88 GeV. Total Z-changing and A-changing cross sections in the energy range 0.6 to 1.88 GeV are in excellent agreement with the corresponding experimental data of Webber et al. and Westfall at al., while the agreement below 0.6 GeV proton energy is not as good. The general trend of the Z-changing cross sections are reproduced by the model calculations at each proton incident energy. The interaction of 200-MeV protons with synthetic Stony Meteorite samples was undertaken to explain radionuclide production in a cosmic-ray environment. The BNL Linac 200-MeV-proton beam was used to irradiate synthetic Stony Meteorites to simulate cosmic-ray exposures corresponding to 6.4 and 16.4 million years. Each irradiated sample was analyzed with the help of a high-resolution gamma-ray spectrometer for long-lived radioisotopes. The intranuclear cascade code HETC was employed to simulate the 200-MeV proton bombardment on the meteorite samples to predict the radionuclides {sup 7}Be, {sup 22}Na, {sup 46}Mn, and {sup 56}Co produced in the experimental investigation.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 7171654
- Report Number(s):
- BNL-46195; CONF-910503-30; ON: DE92040688
- Resource Relation:
- Conference: International conference on nuclear data for science and technology, Juelich (Germany), 13-17 May 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
IRON 56 TARGET
PROTON REACTIONS
RADIOISOTOPES
PRODUCTION
COSMIC RADIATION
CROSS SECTIONS
GAMMA SPECTROMETERS
NUCLEAR CASCADES
NUCLEAR FRAGMENTATION
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
HADRON REACTIONS
IONIZING RADIATIONS
ISOTOPES
MEASURING INSTRUMENTS
NUCLEAR REACTIONS
NUCLEON REACTIONS
RADIATIONS
SPECTROMETERS
TARGETS
663430* - Nucleon-Induced Reactions & Scattering- (1992-)
663540 - Nuclear Mass Ranges- A=39-58- (1992-)