Au-197(n,gamma) cross section in the unresolved resonance region

作者：Lederer C^*; Colonna N; Domingo Pardo C; Gunsing F; Kaeppeler F; Massimi C; Mengoni A; Wallner A; Abbondanno U; Aerts G; Alvarez H; Alvarez Velarde F; Andriamonje S; Andrzejewski J; Assimakopoulos P; Audouin L; Badurek G; Barbagallo M; Baumann P; Becvar F; Belloni F; Berthoumieux E; Calviani M; Calvino F; Cano Ott D; Capote R; Carrapico C; Carrillo de Albornoz A; Cennini P; Chepel V; Chiaveri E; Cortes G; Couture A; Cox J

来源：Physical Review C, 2011, 83(3): 034608.

DOI：10.1103/PhysRevC.83.034608

The cross section of the reaction Au-197(n,gamma) was measured with the time-of-flight technique at the n_TOF (neutron time-of-flight) facility in the unresolved resonance region between 5 and 400 keV using a pair of C6D6 (where D denotes H-2) liquid scintillators for the detection of prompt capture gamma rays. The results with a total uncertainty of 3.9%-6.7% for a resolution of 20 bins per energy decade show fair agreement with the Evaluated Nuclear Data File Version B-VII.0 (ENDF/B-VII.0), which contains the standard evaluation. The Maxwellian-averaged cross section (MACS) at 30 keV is in excellent agreement with the one according to the ENDF/B-VII.0 evaluation and 4.7% higher than the MACS measured independently by activation technique. Structures in the cross section, which had also been reported earlier, have been interpreted as being due to clusters of resonances.

• 出版日期2011-3-17
• 单位中国地震局