Calculation of beta-ray spectra from individual and aggregate fission products

Kanji Tasaka, Junichi Miwa, Junichi Katakura, Tadashi Yoshida, Kiyoshi Kawade, Toshio Katoh, Takahiro Tachibana, Masami Yamada, Rvuzo Nakasima

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The β-ray spectra of individual fission products were calculated by using the β-decay data assuming every β-decay to be allowed transition. For the nuclides without measured decay data the β-feeding function was evaluated with the gross theory of β-decay and the β-ray spectrum was calculated from the function. The measured decay data were also supplemented with the data calculated by the gross theory for the excitation energy range above the highest measured excitation energy level. The β-ray spectra from aggregate fission products after a burst fission were calculated by using the β-ray spectrum and the atom number of each fission product nuclide and they were compared with the ones measured for thermal neutron induced fission of 235U, 239Pu and 241Pu at Oak Ridge National Laboratory. The spectrum calculations showed excellent agreement with the measured data at shorter cooling times than 10 s when many short-lived nuclides without measured decay data contributed considerably to the spectrum.

Original languageEnglish
Pages (from-to)303-312
Number of pages10
JournalJournal of Nuclear Science and Technology
Volume29
Issue number4
Publication statusPublished - 1992 Apr

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fission products
Fission products
Isotopes
rays
Excitation energy
decay
nuclides
Electron energy levels
fission
Neutrons
Cooling
Atoms
thermal neutrons
excitation
ridges
bursts
energy levels
cooling
atoms

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

Cite this

Tasaka, K., Miwa, J., Katakura, J., Yoshida, T., Kawade, K., Katoh, T., ... Nakasima, R. (1992). Calculation of beta-ray spectra from individual and aggregate fission products. Journal of Nuclear Science and Technology, 29(4), 303-312.

Calculation of beta-ray spectra from individual and aggregate fission products. / Tasaka, Kanji; Miwa, Junichi; Katakura, Junichi; Yoshida, Tadashi; Kawade, Kiyoshi; Katoh, Toshio; Tachibana, Takahiro; Yamada, Masami; Nakasima, Rvuzo.

In: Journal of Nuclear Science and Technology, Vol. 29, No. 4, 04.1992, p. 303-312.

Research output: Contribution to journalArticle

Tasaka, K, Miwa, J, Katakura, J, Yoshida, T, Kawade, K, Katoh, T, Tachibana, T, Yamada, M & Nakasima, R 1992, 'Calculation of beta-ray spectra from individual and aggregate fission products', Journal of Nuclear Science and Technology, vol. 29, no. 4, pp. 303-312.
Tasaka K, Miwa J, Katakura J, Yoshida T, Kawade K, Katoh T et al. Calculation of beta-ray spectra from individual and aggregate fission products. Journal of Nuclear Science and Technology. 1992 Apr;29(4):303-312.
Tasaka, Kanji ; Miwa, Junichi ; Katakura, Junichi ; Yoshida, Tadashi ; Kawade, Kiyoshi ; Katoh, Toshio ; Tachibana, Takahiro ; Yamada, Masami ; Nakasima, Rvuzo. / Calculation of beta-ray spectra from individual and aggregate fission products. In: Journal of Nuclear Science and Technology. 1992 ; Vol. 29, No. 4. pp. 303-312.
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