JAEA-Conf 2011-002 - 日本原子力研究開発機構

The double-differential (n,xp) and (n,x) cross sections for silicon were measured with 175 MeV
quasi mono-energetic neutrons at the The Svedberg Laboratory (TSL) using the time-of-flight method. The
measured cross sections were compared with the GNASH calculations to benchmark the exciton model
incorporating the Iwamoto-Harada-Sato (IHS) model. For proton production, the GNASH calculation is in
generally good agreement with the measurement over a wide angular range except at 20º. From our
analysis of preequilibrium alpha emission over a wide incident energy range, we have found clearly the
energy dependence of ΔR parameter used in the IHS model to reproduce the measured (n,x) data.
In the future, we plan to make similar data analyses for production cross section of deuteron, triton
and 3 He measured in the present experiment.
We would like to thank the staff of the The Svedberg Laboratory for their assistance during the
experiments. U. T. expresses his gratitude to the Thailand Research Fund (TRF) for financial support under
Project No.MGR5280165. This work was supported in part by the Semiconductor Technology Academic
Research Center (STARC) joint research program.
JAEA-Conf 2011-002
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