The 209Bi(nth,{gamma})210Bi and 209Bi(nth,{gamma})210m,gBi Cross Sections Determined at the Budapest Neutron Centre

Journal Article · Tue May 24 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1945093· OSTI ID:20722645

Borella, A; Schillebeeckx, P ^[1]; Molnar, G; Belgya, T; Revay, Zs; Szentmiklosi, L ^[2]; Berthoumieux, E; Gunsing, F; Letourneau, A; Marie, F ^[3]

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1. EC-JRC-IRMM, Retieseweg 111, B-2440 Geel (Belgium)
2. II, CRC HAS, P.O. Box 77, H-1525 Budapest (Hungary)
3. CEA DAPNIA/SPhN F-91911 Gif-sur-Yvette CEDEX (France)

The neutron total capture cross section of 209Bi together with the cross sections to the ground state and the isomeric state were determined at the cold neutron beam PGAA-NIPS facilities at the Budapest Neutron Centre. For the measurements we used a coaxial HPGe detector with Compton suppression. The partial {gamma}-ray production cross sections were deduced relative to the partial capture cross section for the 4055 keV transition following 209Bi(n,{gamma}). This partial cross section was measured with a bismuth nitrate sample with respect to nitrogen as a comparator. The total capture cross section resulting from the primary transitions is lower than the one deduced from the transitions feeding the isomeric and the ground state. Since the multipolarity of the main transition feeding the ground state is not known, the uncertainty on the capture cross section to the ground state is rather large. We also compare the total capture thermal cross section with the value deduced from resonance parameters and discuss the impact of the branching ratio on the analysis of prompt capture cross section measurements using the total energy detection principle.

• OSTI ID: 20722645
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 769; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BISMUTH
BISMUTH 209
BISMUTH 210
BISMUTH NITRATES
BRANCHING RATIO
CAPTURE
COLD NEUTRONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
GAMMA RADIATION
GROUND STATES
HIGH-PURITY GE DETECTORS
KEV RANGE
MULTIPOLARITY
NEUTRON REACTIONS
NITROGEN
PARTICLE PRODUCTION
RESONANCE