Exploring the reactor heat problem: Study of the beta decay of 104,105Tc using the TAS technique

A. Algora, J. L. Taín, A. B. Perez, B. Rubio, J. Agramunt, L. Caballero, E. Nácher, A. Krasznahorkay, M. Hunyadi, J. Gulyás, A. Vitéz, J. Äystö, H. Penttilä, S. Rinta-Antila, I. Moore, T. Eronen, A. Jokinen, A. Nieminen, J. Hakala, P. KarvonenA. Kankainen, U. Hager, T. Sonoda, K. Burkard, W. Hüller, L. Batist, W. Gelletly, T. Yoshida, A. L. Nichols, A. Sonzogni

Research output: Contribution to journalArticle

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Abstract

The decay heat of fission products plays an important role in predictions of the heat up of nuclear fuel in reactors. The released energy is calculated as the summation of the activities of all fission products P(t) = ∑ EiλNi(t), where Ei is the decay energy of nuclide i, λi is the decay constant of nuclide i and Ni(t) is the number of nuclide i at cooling time t. Even though the reproduction of the measured decay heat has improved in recent years, there is still a long standing discrepancy in the t ∼ 1000s cooling time for some fuels. A possible explanation to this improper description has been found in the work of Yoshida et al [1], where it has been shown that the incomplete knowledge of the β-decay of some Tc isotopes can be the source of the systematic discrepancy. Motivated by [1], we have recently measured the β-decay process of some Tc isotopes using a total absorption spectrometer at the IGISOL facility in Jyväskylä. The results of the measurements as well as the their consequences on summation calculations are discussed.

Original languageEnglish
Pages (from-to)383-384
Number of pages2
JournalEuropean Physical Journal: Special Topics
Volume150
Issue number1
DOIs
Publication statusPublished - Nov 2007

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Heat problems
Isotopes
Fission products
reactors
heat
decay
nuclides
Cooling
fission products
Nuclear fuels
Spectrometers
isotopes
cooling
nuclear fuels
Hot Temperature
spectrometers
energy
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Exploring the reactor heat problem : Study of the beta decay of 104,105Tc using the TAS technique. / Algora, A.; Taín, J. L.; Perez, A. B.; Rubio, B.; Agramunt, J.; Caballero, L.; Nácher, E.; Krasznahorkay, A.; Hunyadi, M.; Gulyás, J.; Vitéz, A.; Äystö, J.; Penttilä, H.; Rinta-Antila, S.; Moore, I.; Eronen, T.; Jokinen, A.; Nieminen, A.; Hakala, J.; Karvonen, P.; Kankainen, A.; Hager, U.; Sonoda, T.; Burkard, K.; Hüller, W.; Batist, L.; Gelletly, W.; Yoshida, T.; Nichols, A. L.; Sonzogni, A.

In: European Physical Journal: Special Topics, Vol. 150, No. 1, 11.2007, p. 383-384.

Research output: Contribution to journalArticle

Algora, A, Taín, JL, Perez, AB, Rubio, B, Agramunt, J, Caballero, L, Nácher, E, Krasznahorkay, A, Hunyadi, M, Gulyás, J, Vitéz, A, Äystö, J, Penttilä, H, Rinta-Antila, S, Moore, I, Eronen, T, Jokinen, A, Nieminen, A, Hakala, J, Karvonen, P, Kankainen, A, Hager, U, Sonoda, T, Burkard, K, Hüller, W, Batist, L, Gelletly, W, Yoshida, T, Nichols, AL & Sonzogni, A 2007, 'Exploring the reactor heat problem: Study of the beta decay of 104,105Tc using the TAS technique', European Physical Journal: Special Topics, vol. 150, no. 1, pp. 383-384. https://doi.org/10.1140/epjst/e2007-00353-x
Algora, A. ; Taín, J. L. ; Perez, A. B. ; Rubio, B. ; Agramunt, J. ; Caballero, L. ; Nácher, E. ; Krasznahorkay, A. ; Hunyadi, M. ; Gulyás, J. ; Vitéz, A. ; Äystö, J. ; Penttilä, H. ; Rinta-Antila, S. ; Moore, I. ; Eronen, T. ; Jokinen, A. ; Nieminen, A. ; Hakala, J. ; Karvonen, P. ; Kankainen, A. ; Hager, U. ; Sonoda, T. ; Burkard, K. ; Hüller, W. ; Batist, L. ; Gelletly, W. ; Yoshida, T. ; Nichols, A. L. ; Sonzogni, A. / Exploring the reactor heat problem : Study of the beta decay of 104,105Tc using the TAS technique. In: European Physical Journal: Special Topics. 2007 ; Vol. 150, No. 1. pp. 383-384.
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AU - Rubio, B.

AU - Agramunt, J.

AU - Caballero, L.

AU - Nácher, E.

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