TY - JOUR
T1 - The (3He, tf) as a surrogate reaction to determine (n, f) cross sections in the 10-20 MeV energy range
AU - Basunia, S.
AU - Clark, R. M.
AU - Goldblum, B. L.
AU - Bernstein, L. A.
AU - Phair, L.
AU - Harke, J. T.
AU - Beausang, C. W.
AU - Bleuel, D. L.
AU - Darakchieva, null
AU - Dietrich, null
AU - Evtimova, null
AU - Fallon, P.
AU - Gibelin, J.
AU - Hatarik, R.
AU - Jewett, null
AU - Lesher, S. R.
AU - McMahan, M. A.
AU - Rodriguez-Vieitez, E.
AU - Wiedeking, M.
PY - 2009/6/1
Y1 - 2009/6/1
N2 - The surrogate reaction 238U(3He, tf) is used to determine the 237Np(n, f) cross section indirectly over an equivalent neutron energy range from 10 to 20 MeV. A self-supporting ∼761 μg/cm2 metallic 238U foil was bombarded with a 42 MeV 3He2+ beam from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory (LBNL). Outgoing charged particles and fission fragments were identified using the Silicon Telescope Array for Reaction Studies (STARS) consisted of two 140 μm and one 1000 μm Micron S2 type silicon detectors. The 237Np(n, f) cross sections, determined indirectly, were compared with the 237Np(n, f) cross section data from direct measurements, the Evaluated Nuclear Data File (ENDF/B-VII.0), and the Japanese Evaluated Nuclear Data Library (JENDL 3.3) and found to closely follow those datasets. Use of the (3He, tf) reaction as a surrogate to extract (n, f) cross sections in the 10-20 MeV equivalent neutron energy range is found to be suitable.
AB - The surrogate reaction 238U(3He, tf) is used to determine the 237Np(n, f) cross section indirectly over an equivalent neutron energy range from 10 to 20 MeV. A self-supporting ∼761 μg/cm2 metallic 238U foil was bombarded with a 42 MeV 3He2+ beam from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory (LBNL). Outgoing charged particles and fission fragments were identified using the Silicon Telescope Array for Reaction Studies (STARS) consisted of two 140 μm and one 1000 μm Micron S2 type silicon detectors. The 237Np(n, f) cross sections, determined indirectly, were compared with the 237Np(n, f) cross section data from direct measurements, the Evaluated Nuclear Data File (ENDF/B-VII.0), and the Japanese Evaluated Nuclear Data Library (JENDL 3.3) and found to closely follow those datasets. Use of the (3He, tf) reaction as a surrogate to extract (n, f) cross sections in the 10-20 MeV equivalent neutron energy range is found to be suitable.
KW - Charge-exchange reaction
KW - Cross section
KW - Indirect method
KW - Surrogate Method
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U2 - 10.1016/j.nimb.2009.04.006
DO - 10.1016/j.nimb.2009.04.006
M3 - Article
SN - 0168-583X
VL - 267
SP - 1899
EP - 1903
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 11
ER -