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Journal Articles

Adjustment of total delayed neutron yields of $$^{235}$$U, $$^{238}$$U and $$^{239}$$Pu in JENDL-3.2 using benchmark experiments on effective delayed neutron fraction $$beta_{eff}$$

Sakurai, Takeshi; Okajima, Shigeaki

Journal of Nuclear Science and Technology, 39(1), p.19 - 30, 2002/01

 Times Cited Count:4 Percentile:67.16(Nuclear Science & Technology)

The cross section adjustment method was applied to total delayed neutron yields of $$^{235}$$U, $$^{238}$$U and $$^{239}$$Pu of the JENDL-3.2 file by using experimental results of effective delayed neutron fraction $$beta_{eff}$$ at six cores built in two fast critical facilities of the MASURCA and FCA and a thermal critical facility of the TCA to improve these yields. The adjustment was carried out on the yields given at several incident neutron energy points in the file. After the adjustment, the yield of $$^{238}$$U was almost uniformly decreased by about 3% below 7 MeV. The yield of $$^{239}$$Pu was increased by 2.6% and that of $$^{235}$$U was decreased by 0.9% at the thermal energy point, while the change of yield was less than 0.3% at the other energy points for these nuclides. By using these adjusted yields, the uncertainty of calculated $$beta_{eff}$$ was reduced and the agreement of $$beta_{eff}$$ between experiment and calculation was improved.

Journal Articles

Chemical analysis of transuranium nuclides in the uranium solution of the JCO criticality accident

Shinohara, Nobuo; Kono, Nobuaki; Suyama, Kenya; Inagawa, Jun; Nakahara, Yoshinori; Kurosawa, Setsumi; Watanabe, Kazuo; Usuda, Shigekazu; Oshima, Masumi; Katsuta, Hiroji; et al.

Radiochimica Acta, 89(3), p.135 - 138, 2001/05

 Times Cited Count:2 Percentile:77.64(Chemistry, Inorganic & Nuclear)

no abstracts in English

JAEA Reports

Estimation of uncertainties in resonance parameters of $$^{56}$$Fe,$$^{239}$$Pu,$$^{240}$$Pu and $$^{238}$$U

Nakagawa, Tsuneo; Shibata, Keiichi

JAERI-Research 97-035, 79 Pages, 1997/05

JAERI-Research-97-035.pdf:3.57MB

no abstracts in English

Journal Articles

Benchmark tests of principal fissile nuclide data in JENDL-3 with simple fast critical assemblies

D.Tian*; ; Nakagawa, Tsuneo;

Journal of Nuclear Science and Technology, 30(11), p.1087 - 1098, 1993/11

no abstracts in English

5 (Records 1-5 displayed on this page)
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