Details

Autor(en) / Beteiligte

• Tahara, Yoshihisa
• Hirano, Haruka
• Chiba, Satoshi
• Mochizuki, Hiroyasu
• Katabuchi, Tatsuya

Titel

Request for 35Cl(n,p) reaction cross-section measurements and re-evaluations from the standpoint of molten chloride salt fast reactor design

Ist Teil von

• Journal of Nuclear Science and Technology: Nuclear Data and Code Systems as a Basis of Nuclear Technology, 2024, Vol.61 (2), p.277-284

Ort / Verlag

Taylor & Francis

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A molten chloride salt fast reactor with inherent safety features is being studied in order to utilize spent fuel discharged from light-water reactors effectively and to reduce environmental burdens. A hard neutron spectrum is required to achieve the transmutation of TRU efficiently, which can be realized by using a molten chloride salt. However, it was found that the criticality analysis shows a large difference of 2%Δk among the effective multiplication factors (k eff ) obtained using several evaluated nuclear data libraries. A sensitivity analysis was performed to investigate the cause of the difference in k eff and it was clarified that the difference of 2%Δk/k reactivity was due to the difference in cross sections of the 35 Cl(n,p) 35 S reaction. Such a large difference in k eff makes a reliable core design difficult and strongly affects important core characteristics such as the TRU transmutation rate, conversion ratio, and so on. Therefore, this paper has been prepared to make a strong request for measurements and re-evaluations of the (n,p) cross section of 35 Cl.