Brief Calculation of Neutrino Energy Spectra by the Use of Nuclear Data Files

T. Nishimura, S. Ishimoto, H. Arima, K. Ishibashi, J. Katakura

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1 Citation (Scopus)


Nuclear reactors generate a highly intense flux of electron-antineutrinos from fission products through β decay, and a slight amount of electron-neutrinos through either β+ decay or electron capture. Neutrino energy spectra are usually calculated by the β decay theory. Since the reactor neutrinos are emitted from a great number of nuclides, the calculation requires a lot of level scheme of these nuclides. Nuclear data files, however, are available these days. It is possible to evaluate the electron-antineutrino and -neutrino spectra for a nuclear reactor on the basis of nuclear data files (JENDL-FP-Decay-Data-File-2000, JENDL-3.3)1, 2). In the study, we consider β transition of 420 nuclides for electron-antineutrino spectra and 120 nuclides for electron-neutrinos. We derive electron-neutrino and -antineutrino spectra in the energy range of 10 keV to 8 MeV from nuclear data files. The method gives good agreement with other studies for electron-antineutrino spectra. We show a simple method to estimate the reactor neutrino spectra without complicated computation.

Original languageEnglish
Pages (from-to)522-525
Number of pages4
Journaljournal of nuclear science and technology
Publication statusPublished - Mar 2004

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering


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