The Spallation of Iridium with Protons of Energies 9-87 Mev

Journal Article · Tue Oct 01 04:00:00 EDT 1963 · Canadian Journal of Chemistry

DOI:https://doi.org/10.1139/v63-373· OSTI ID:4638735

Grant, G. R.; Yaffe, L.

Iridium metal was bombarded with protons varying in energy from 8 to 87 Mev. The spallation products were radiochemically separated and decay characteristics and formation cross sections were determined. It was confirmed that both Pt¹⁸⁷ and Pt¹⁸⁶ have half lives of about 3 hr, and a half- life of 13.3 plus or minus 0.2 days was found for Ir¹⁸⁹. An isomeric state of Ir¹⁸⁶ with half life 2.0 plus or minus 0.5 hr was found. Fair agreement was obtained between excitation functions for (p,xn) reactions determined experimentally and those predicted by the Jackson model. The (p,pn) yield at 84 Mev was compared with that calculated from Monte Carlo cascade data combined with evaporation theory and found to be too high by a factor of 4.

• Research Organization: McGill Univ., Montreal
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-039991
• OSTI ID: 4638735
• Journal Information: Canadian Journal of Chemistry, Journal Name: Canadian Journal of Chemistry Journal Issue: 10 Vol. 41; ISSN 0008-4042
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CROSS SECTIONS
DECAY
ENERGY
EVAPORATION
EXCITATION
FISSION
FISSION PRODUCTS
HALF-LIFE
IRIDIUM 189
ISOMERS
JACKSON MODEL
METALS
MEV RANGE
MONTE CARLO METHOD
NEUTRONS
NUCLEAR REACTIONS
NUMERICALS
PHYSICS
PLATINUM 186
PLATINUM 187
PRODUCTION
PROTON BEAMS
RADIOCHEMISTRY
REACTION KINETICS