2023 Fall Meeting

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Oral presentation

II. Radiation, Accelerator, Beam and Medical Technologies » 201-1 Nuclear Physics, Nuclear Data Measurement/Evaluation/Validation, Nuclear Reaction Technology

[3N10-16] Nuclear Data Evaluation and Validation

Fri. Sep 8, 2023 2:45 PM - 4:30 PM Room N (School of Eng. Bildg. 2F 521)

Chair:Shinsuke Nakayama(JAEA)

3:30 PM - 3:45 PM

[3N13] Impact of 9Be thermal scattering law data considering crystallite size

(1) Critical experiment analysis

*Chikara Konno1 (1. Japan Atomic Energy Agency)

Keywords:ESS, 9Be, thermal scattering law data, crystallite size, MIX-MET-FAST-007

Recently European Spallation Source group reported that the thermal scattering law data of 9Be changed with the crystallite size of beryllium. We calculated the effective multiplication factor for the critical experiment MIX-MET-FAST-007 with JENDL-5 and the ESS thermal scattering law data of 9Be. The calculation results indicated that the effective multiplication factor decreased as the crystallite size of beryllium increased in the cases where the beryllium reflector was thicker than 16 cm.