Photoexcitation of {sup 189}Os{sup {ital m}} and {sup 193}Ir{sup {ital m}}. II. Excitation by {sup 137}Cs and {sup 60}Co {gamma} rays

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.52.1516· OSTI ID:249492

Lakosi, L; Tam, N C; Pavlicsek, I; Petoe, A ^[1]

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1. Institute of Isotopes, Hungarian Academy of Sciences, P. O. Box 77, H-1525 Budapest (Hungary)

Photoexcitation of 5.84 h {sup 189}Os{sup {ital m}} and 10.6 d {sup 193}Ir{sup {ital m}} was observed using high activity {sup 137}Cs and {sup 60}Co sources for irradiation. The highly converted weak isomeric transitions were detected by large area 2{pi} multiwire proportional chambers. Determining resonance photon flux densities with Monte Carlo simulation, isomer excitation cross sections integrated over identified activation levels were evaluated and level half-lives were derived.

• OSTI ID: 249492
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 52; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CESIUM 137
COBALT 60
CROSS SECTIONS
EXCITATION
HALF-LIFE
IRIDIUM 193
IRRADIATION
ISOMERS
MONTE CARLO METHOD
OSMIUM 189
PHOTONUCLEAR REACTIONS
RESONANCE