Composition, decomposition and analysis of reactor antineutrino and electron spectra based on gross theory of β-decay and summation method

Tadashi Yoshida, Takahiro Tachibana, Naoto Hagura, Satoshi Chiba

Research output: Contribution to journalArticle

4 Citations (Scopus)


We applied the gross theory of β-decay to compose and decompose the reactor electron and antineutrino spectra emitted from 235,238 U and 239,241 Pu by summing up all the contributions from a large number of decaying fission-products (FPs). We make it clear what kinds of transition types and FP nuclides are important to shape the lepton spectra. Important role of the odd(Z)-odd(N) nuclides is also argued from the view point of the gross theory of β-decay. After taking the ambiguity in the current data for fission yields and -values into account, we suggested a possibility that the high-energy part of the widely referred electron-spectra by Schreckenbach et al. might be too low. Our calculation supports the old experiment at University of Illinois.

Original languageEnglish
Pages (from-to)175-182
Number of pages8
JournalProgress in Nuclear Energy
Publication statusPublished - 2016 Apr 1



  • Allowed
  • Beta-strength
  • Beta-transitions
  • First-forbidden
  • Fission products
  • Lepton spectra

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Waste Management and Disposal
  • Safety, Risk, Reliability and Quality

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