Reactor decay heat in 239Pu: solving the γ discrepancy in the 4-3000-s cooling period

The β feeding probability of (102,104,105,106,107)Tc, 105Mo, and 101Nb 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...

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Veröffentlicht in:	Physical review letters 2010-11, Vol.105 (20), p.202501-202501
Hauptverfasser:	Algora, A, Jordan, D, Taín, J L, Rubio, B, Agramunt, J, Perez-Cerdan, A B, Molina, F, Caballero, L, Nácher, E, Krasznahorkay, A, Hunyadi, M D, Gulyás, J, Vitéz, A, Csatlós, M, Csige, L, Aysto, J, Penttilä, H, Moore, I D, Eronen, T, Jokinen, A, Nieminen, A, Hakala, J, Karvonen, P, Kankainen, A, Saastamoinen, A, Rissanen, J, Kessler, T, Weber, C, Ronkainen, J, Rahaman, S, Elomaa, V, Rinta-Antila, S, Hager, U, Sonoda, T, Burkard, K, Hüller, W, Batist, L, Gelletly, W, Nichols, A L, Yoshida, T, Sonzogni, A A, Peräjärvi, K
Format:	Artikel
Sprache:	eng
Schlagworte:	ABSORPTION FEEDING national nuclear data center NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEI PROBABILITY REACTORS SPECTROMETERS
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Zusammenfassung:	The β feeding probability of (102,104,105,106,107)Tc, 105Mo, and 101Nb 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 γ component of the decay heat for 239Pu in the 4-3000 s range.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.105.202501