Doppler effect measurement on resonance materials for rock-like oxide fuels in an intermediate neutron spectrum

Ando, Masaki; Nakano, Yoshihiro; Okajima, Shigeaki; Kawasaki, Kenji

Journal of Nuclear Materials, 319, p.126 - 130, 2003/06

https://doi.org/10.1016/S0022-3115(03)00144-2

Doppler effect experiments on resonance materials for ROX fuels were carried out to examine the calculation accuracy in the intermediate neutron spectrum using Fast Critical Assembly (FCA) at Japan Atomic Energy Research Institute. This study is the second phase of a series of the Doppler effect experiments on the resonance materials, which is following the measurements in the fast neutron spectrum. The Doppler effect was measured as the sample reactivity change between the heated and unheated samples. The cylindrical samples of the resonance materials such as erbium (Er), tungsten (W) and thorium (ThO) were used. The sample was heated up to 800C at the center of the FCA core. The Doppler effect measurements were analyzed using the SRAC 95 code system with the use of JENDL 3.2. The calculated values agreed with the experiment within the experimental error for the W and ThO samples, while the calculation overestimated the experiment for the Er sample about 10 %.

Nuclear characteristics evaluation of a pulsed reactor using solution fuel, SILENE

Nakajima, Ken

JAERI-Research 2001-003, 29 Pages, 2001/03

JAERI-Research-2001-003.pdf:1.48MB

no abstracts in English

POST: The Post library processor for criticality calculation using SRAC95

Suyama, Kenya; Takada, Tomoyuki*

JAERI-Data/Code 98-035, 24 Pages, 1998/11

JAERI-Data-Code-98-035.pdf:0.85MB

no abstracts in English