Investigation of (n,alpha) Reaction for Rare-earth Elements in the MeV Neutron Energy Region

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Journal - Korean Physical Society

OSTI ID:1036694

Gledenov, R Y ^[1]; Koehler, Paul Edward ^[2]

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1. Joint Institute for Nuclear Research, Dubna, Russia
2. ORNL

Cross sections and forward/backward ratios in the laboratory reference system were measured for {sup 143}Nd(n, {alpha}){sup 140}Ce at 4.0, 5.0, and 6.0 MeV, {sup 147}Sm(n, {alpha}){sup 144}Nd at 5.0 and 6.0 MeV, and {sup 149}Sm(n, {alpha}){sup 146}Nd at 6.0 MeV. A twin gridded ionization chamber and large-area back-to-back {sup 143}Nd{sub 2}O{sub 3} and {sup 147,149}Sm{sub 2}O{sub 3} samples were employed. Experiments were performed at the 4.5 MV Van de Graaff of Peking University, China. Fast neutrons were produced through the D(d, n){sup 3}He reaction by using a deuterium gas target. A small {sup 238}U fission chamber was employed for absolute neutron flux determination and a BF{sub 3} long counter was used as neutron flux monitor. Present experimental data are compared with previous measurements, evaluations, and model calculations.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1036694
• Journal Information: Journal - Korean Physical Society, Journal Name: Journal - Korean Physical Society Journal Issue: 2 Vol. 59; ISSN KPSJAS; ISSN 0374-4884
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CROSS SECTIONS
DEUTERIUM
FAST NEUTRONS
FISSION CHAMBERS
IONIZATION CHAMBERS
LONG COUNTERS
NEUTRON FLUX
NEUTRONS
VAN DE GRAAFF ACCELERATORS