Open Access
ND 2007
Article Number 248
Number of page(s) 4
Section Shielding and dosimetry
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07417

Validation of the event generator mode in the PHITS code and its application

Yosuke Iwamoto1, Koji Niita2, Yukio Sakamoto1, Tatsuhiko Sato1 and Norihiro Matsuda1

1  Japan Atomic Energy Agency (JAEA), 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
2  Research Organization for Information Science and Technology (RIST), 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan

Published online: 21 May 2008

The "Event Generator Mode" has been introduced into the PHITS code in the treatment of low energy transport phenomena. In this mode, the evaluated nuclear data for neutrons and a special evaporation model are combined so as to trace all correlations of ejectiles keeping the energy and the momentum conservation in a collision. We have calculated the double differential cross section, the kerma coefficient and the displacement cross section by the event generator mode of PHITS, and compared them with the evaluated nuclear data for the validation of the mode in neutron-induced reactions under 30 MeV. As results, all calculated results by the event generator mode reproduce the evaluated nuclear data well below 20 MeV. As an application of this mode, we indicate a new approach to the deposit energy distribution for the thermal neutron transport and the averaged quality factor for neutrons.

© CEA 2008

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