Measurement of U Doppler Effect using various samples in FCA XVII-1

Ando, Masaki; Okajima, Shigeaki; Oigawa, Hiroyuki

JAERI-Research 2001-017, 20 Pages, 2001/03

JAERI-Research-2001-017.pdf:0.82MB

U Doppler effect measurements were carried out using 6 uranium samples with various composition or diameter varying self-shielding factors of U. Calculation accuracy of the standard analysis method for fast reactor cores at FCA was investigated.The Doppler effect were measured by the sample-heated and reactivity worth measurement method up to 800 degree in the FCA XVII-1 assembly, which simulated Na-cooled MOX fueled FBR. In the analysis, the Doppler effect was calculated using the effective cross sections obtained by the PEACO-X code. The calculated values based on the diffusion theory agreed well with the experiment for the U-metal and UO samples. The calculation underestimated the experiment from 10% to 30% for the UO samples containing BeO. This underestimation was improved by the use of the transport calculation. The calculation, however, underestimated about 20% for the sample whose background cross section is greater than 300 barns.

Neutron-photon multigroup cross sections for neutron energies up to 400MeV:HILO86R; Revision of HILO86 library

*; Nakane, Yoshihiro; ; Tanaka, Shunichi

JAERI-M 93-020, 25 Pages, 1993/02

JAERI-M-93-020.pdf:0.62MB

no abstracts in English

Neutron Self-shielding Factor of UO Pellets for Mo Production

JAERI-M 8074, 11 Pages, 1979/02

JAERI-M-8074.pdf:0.51MB

no abstracts in English

Effect of 1/E spectrum on effective self-shielding factor of U-238 absorption near Na resonance

Tone, Tatsuzo

Journal of Nuclear Science and Technology, 5(4), p.195 - 196, 1968/00

https://doi.org/10.3327/jnst.5.195

no abstracts in English