Cross sections of the Nd143(n,α)Ce140 and Sm147(n,α)Nd144 reactions in the MeV neutron energy region
Abstract
Cross sections and forward/backward ratios in the laboratory reference system were measured for the Nd143(n,α)Ce140 reaction at 4.0, 5.0, and 6.0 MeV and for the Sm147(n,α)Nd144 reaction at 5.0 and 6.0 MeV. A twin-gridded ionization chamber and large-area back-to-back Nd1432O3 samples and Sm1472O3 samples were employed. Experiments were performed at the 4.5 MV Van de Graaff accelerator of Peking University, China. Fast neutrons were produced through the H2(d,n)He3 reaction by using a deuterium gas target. A small U238 fission chamber was employed for absolute neutron flux determination, and a BF3 long counter was used as the neutron flux monitor. Present experimental data are compared with previous measurements, evaluations, and model calculations.
- Publication:
-
Physical Review C
- Pub Date:
- October 2009
- DOI:
- 10.1103/PhysRevC.80.044602
- Bibcode:
- 2009PhRvC..80d4602G
- Keywords:
-
- 28.20.-v;
- 25.40.-h;
- 24.10.-i;
- Neutron physics;
- Nucleon-induced reactions;
- Nuclear reaction models and methods