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A. Algora,D. Jordan,J. L. Tain,B. Rubio,J. Agramunt,L. Caballero,E. Nacher,A. B. Perez-Cerdan,F. Molina,A. Krasznahorkay,M. D. Hunyadi,J. Gulyas,A. Vitez,M. Csatlos,L. Csige,J. Aysto,H. Penttila,S. Ri 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The decay heat of fission products plays an important role in predictions of the heat released by nuclear fuel in reactors. In this contribution we present results of the analysis of the measurement of the beta decay of some refractory isotopes that were considered possible important contributors to the decay heat in reactors. The measurements presented here were performed at the IGISOL facility of the University of Jyvakyla Finland. In our measurements we have combined for the first time a Penning trap (JYFLTRAP), which was used as a high resolution isobaric separator, with a total absorption spectrometer. The results of the measurements as well as their consequences for decay heat summation calculations are discussed.