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Reactor Decay Heat in Pu-239: Solving the gamma Discrepancy in the 4-3000-s Cooling Period

AuthorsAlgora, Alejandro ; Jordán Martín, M. Dolores ; Taín, José Luis ; Rubio, Berta ; Agramunt, Jorge ; Pérez-Cerdán, Ana Belén ; Molina Palacios, Francisco Gabriel ; Caballero Ontanaya, Luis ; Nácher, Enrique ; Krasznahorkay, A.; Hunyadi, M. D.; Gulyas, J.; Vitez, A.; Csatlós, M.; Csige, L.; Äystö, Juha; Penttilä, H.; Moore, I.; Eronen, T.; Jokinen, A.; Nieminen, A.; Hakala, J.; Karvonen, P.; Kankainen, A.; Saastamoinen, A.; Rissanen, J.; Kessler, T.; Weber, C.; Ronkainen, J.; Rahaman, S.; Eloma, V.; Rinta-Antila, S.; Hager, U.; Sonoda, T.; Burkard, K.; Hueller, W.; Batist, L.; Gelletly, W.; Nichols, A. L.; Yoshida, T.; Sonzogni, A. A.; Peräjärvi, K.
Issue Date8-Nov-2010
PublisherAmerican Physical Society
CitationPhysical Review Letters 105 (20): 202501 (2010)
AbstractThe beta feeding probability of Tc-102,Tc- 104,Tc- 105,Tc- 106,Tc- 107, Mo-105, and Nb-101 nuclei, which are important contributors to the decay heat in nuclear reactors, has been measured using the total absorption technique. We have coupled for the first time a total absorption spectrometer to a Penning trap in order to obtain sources of very high isobaric purity. Our results solve a significant part of a long-standing discrepancy in the gamma component of the decay heat for Pu-239 in the 4-3000 s range.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.105.202501
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