Naohiko Otuka

Modernization in processing and dissemination of experimental cross section data in EXFOR

Naohiko Otuka, Vidya Devi

The EXFOR library is a nearly complete database for experimental radionuclide production cross sections for light charged-particle induced reactions, and retrieval of the experimental cross sections in EXFOR is the first step in determination of the best estimate of the radionuclide production …

Influence of secondary neutrons on alpha-particle induced reaction cross section measurement below the Coulomb barrier

Yamato Fujii, Naohiko Otuka, Kenta Sugihara, Masayuki Aikawa et autres

jp, at (code pays fourni par la source)

Influence of secondary neutrons on alpha-particle induced reaction cross section measurement below the Coulomb barrier

Yamato Fujii, Naohiko Otuka, Kenta Sugihara, Masayuki Aikawa et autres

The influence of the secondary neutrons on measurements of alpha-particle activation cross sections below the Coulomb barrier was studied for the $^\mathrm{nat}$Pt($α$,x)$^\mathrm{195m}$Pt reaction. We characterized the secondary neutron field by using the particle transport simulation code PHITS, and estimated the $^\mathrm{nat}$Pt(n,x)$^\mathrm{195m}$Pt yields …

Proceedings of the 12th AASPP Workshop on Asian Nuclear Reaction Database Development

Masayuki Aikawa, Kosuke Nomura, Naohiko Otuka

followed the workshops in Sapporo (

jp (code pays fourni par la source)

ForEXy: Utility Codes for EXFOR Library, Rev. 2025/12

IAEA-Nuclear Data Section, Naohiko Otuka

codes (ForEXy) and their application to neutron fission cross section evaluation",

Summary Report of the Technical Meeting on International Network of Nuclear Reaction Data Centres

Naohiko Otuka, Boris Pritychenko

Centres held at Universidad Politécnica de Madrid, Madrid, Spain from 17 to 20 June 2025.The meeting was attended by 27 participants representing 13 cooperative Centres from eight Member States (China, Hungary, India, Japan, Korea, Russia, Ukraine and USA) and two International Organisations …

Energy dependence of isomeric ratios for alpha-particle-induced reactions on natural platinum up to 50 MeV studied by simultaneous decay curve analysis

Naohiko Otuka, Masayuki Aikawa, Sandor Takács, Damdinsuren Gantumur et autres

at, jp, hu, mn (code pays fourni par la source)

EXFOR utility codes (ForEXy) and their application to neutron fission cross section evaluation

Naohiko Otuka, Vidya Devi, Osamu Iwamoto

We developed a set of EXFOR utility codes (ForEXy) to process the information of the experimental nuclear reaction data stored in the EXFOR library. We designed a new JSON format (J4) for the EXFOR library, and developed a code converting the information …

at, in, jp (code pays fourni par la source)

Erratum to: Isomer production studied with simultaneous decay curve analysis for alpha-particle induced reactions on natural platinum up to 29 MeV

Naohiko Otuka, Sandor Takács, Masayuki Aikawa, Shuichiro Ebata et autres

at, jp, hu (code pays fourni par la source)

Evaluation of 232Th and 237Np fast neutron-induced fission cross sections by simultaneous evaluation approach

Vidya Devi, Naohiko Otuka, Jagjit Singh Matharu

The neutron-induced fission cross sections for 232Th and 237Np were evaluated from 500 keV to 200 MeV and from 70 keV to 200 MeV, respectively. The experimental fission cross sections for 232Th and 237Np, as well as their ratios to the 235,238U, …

in, at (code pays fourni par la source)

Evaluation of uranium-233 neutron capture cross section in keV region

Naohiko Otuka, Kenichi Tada, Oscar Cabellos, Osamu Iwamoto

at, jp, es (code pays fourni par la source)

Activation cross sections of 7Li-induced reactions on natTi: Implications for monitor reactions

Masayuki Aikawa, Saki Goto, Damdinsuren Gantumur, D Ichinkhorloo et autres

jp, mn, at, hu (code pays fourni par la source)