Self-shielding effect of unresolved resonance data in JENDL-4.0 | Zendy

Chikara Konno | Zendy; Yoshinari Kato | Zendy; Kosuke Takakura | Zendy; Masayuki Ohta | Zendy; Kentaro Ochiai | Zendy; Satoshi Sato | Zendy

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Self-shielding effect of unresolved resonance data in JENDL-4.0

Author(s) -

Chikara Konno,

Yoshinari Kato,

Kosuke Takakura,

Masayuki Ohta,

Kentaro Ochiai,

Satoshi Sato

Publication year - 2014

Publication title -

progress in nuclear science and technology

Language(s) - English

Resource type - Journals

ISSN - 2185-4823

DOI - 10.15669/pnst.4.606

Subject(s) - electromagnetic shielding , nuclear magnetic resonance , resonance (particle physics) , physics , atomic physics , quantum mechanics

In 2007 we pointed out that most of the unresolved resonance data in JENDL-3.3 had a problem related to self-shielding effect. Here through comparison of calculated neutron spectra from simple sphere assemblies and the TOF experiment for a manganese sphere at OKTAVIAN we investigate whether the latest JENDL, JENDL-4.0, is improved for the problem or not. The results for the spherical assemblies indicate that the unresolved resonance data in JENDL-4.0 are improved, but the data of the manganese TOF experiment at OKTAVIAN suggest that the unresolved resonance data in JENDL-4.0 still have some problems from the view of the self-shielding effect. New benchmark experiments such as deep penetration experiments are strongly recommended in order to validate the unresolved resonance data in JENDL-4.0.

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