Determination of (n,{gamma}) cross sections in the rare-earth region using the surrogate ratio method

Journal Article · Mon Dec 15 04:00:00 EST 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.064606· OSTI ID:21199435

Goldblum, B L; Prussin, S G; Agvaanluvsan, U; Bernstein, L A; Bleuel, D L; Younes, W; Guttormsen, M ^[1]

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1. University of California, Berkeley, Department of Nuclear Engineering, Berkeley, California 94720-1730 (United States)

The surrogate ratio method was used to convert experimentally determined relative {gamma}-decay probabilities for excited {sup 171}Yb and {sup 161}Dy nuclei, populated using ({sup 3}He, {sup 3}He{sup '}) and ({sup 3}He, {alpha}) reactions, into neutron-induced {gamma}-decay cross sections in an equivalent neutron energy range of 165-465 keV. The relative {gamma}-decay probabilities were measured using the CACTUS array at the Oslo Cyclotron Laboratory and were found to agree with the ratio of neutron-induced {gamma}-decay cross sections for the same compound nuclei over the range of excitation energies measured. No significant entrance-channel effects on the extracted (n,{gamma}) cross sections were observed. The cross sections obtained using the surrogate ratio method were compared to directly measured neutron-capture cross sections and found to agree within the total estimated uncertainty over the range of equivalent neutron energies measured.

• OSTI ID: 21199435
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CAPTURE
COMPOUND NUCLEI
CROSS SECTIONS
DYSPROSIUM 161
EXCITATION
GAMMA DECAY
HELIUM 3
KEV RANGE 100-1000
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
OSLO CYCLOTRON
PROBABILITY
RARE EARTHS
YTTERBIUM 171