Photoexcitation of nuclear isomers by (. gamma. ,. gamma. prime ) reactions

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.1238· OSTI ID:6041067

Carroll, J J; Byrd, M J; Richmond, D G; Sinor, T W; Taylor, K N; Hodge, W L; Paiss, Y; Eberhard, C D; Anderson, J A; Collins, C B ^[1]; Scarbrough, E C; Antich, P P ^[2]; Agee, F J; Davis, D; Huttlin, G A; Kerris, K G; Litz, M S; Whittaker, D A ^[3]

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1. Center for Quantum Electronics, University of Texas at Dallas, Richardson, Texas (USA)
2. University of Texas Southwestern Medical Center at Dallas, Dallas, Texas (USA)
3. Aurora Simulator Facility, Harry Diamond Laboratories, Adelphi, Maryland (USA)

Photoexcitation of the isomers of 19 nuclides was examined in this work. Four accelerators were used as sources of bremsstrahlung to expose the samples and end-point energies covered the range from 0.5 to 11 MeV. No evidence was found for nonresonant processes of excitation. However, more than half the cases showed enhanced channels for the resonant photoexcitation of isomers with integrated cross sections approaching 10{sup {minus}21} cm{sup 2} keV. These results are three to four orders of magnitude larger than values usually characterizing ({gamma},{gamma}{prime}) reactions.

• OSTI ID: 6041067
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 43:3; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
ISOMERIC NUCLEI
MEV RANGE
NUCLEAR REACTIONS
NUCLEI
PHOTONUCLEAR REACTIONS