Total absorption spectroscopy study of $^{92}$Rb decay: a major contributor to reactor antineutrino flux

A. -A. Zakari-Issoufou; M. Fallot; A. Porta; A. Algora; J. L. Tain; E. Valencia; S. Rice; Van Minh Bui; S. Cormon; M. Estienne; J. Agramunt; J. Äystö; M. Bowry; J. A. Briz; R. Caballero-Folch; D. Cano-Ott; A. Cucoanes; V. -V. Elomaa; T. Eronen; E. Estévez; G. F. Farrelly; A. R. Garcia; W. Gelletly; M. B Gomez-Hornillos; V. Gorlychev; J. Hakala; A. Jokinen; M. D. Jordan; A. Kankainen; P. Karvonen; V. S. Kolhinen; F. G Kondev; T. Martinez; E. Mendoza; F. Molina; I. Moore; A. Perez; Zs. Podolyák; H. Penttilä; P. H. Regan; M. Reponen; J. Rissanen; B. Rubio; T. Shiba; A. A. Sonzogni; C. Weber

doi:10.1103/PhysRevLett.115.102503

Total absorption spectroscopy study of $^{92}$Rb decay: a major contributor to reactor antineutrino flux

A. -A. Zakari-Issoufou ¹ M. Fallot ¹ A. Porta A. Algora J. L. Tain E. Valencia S. Rice Van Minh Bui ¹ S. Cormon ¹ M. Estienne ¹ J. Agramunt J. Äystö M. Bowry J. A. Briz R. Caballero-Folch D. Cano-Ott A. Cucoanes ¹ V. -V. Elomaa T. Eronen E. Estévez G. F. Farrelly A. R. Garcia W. Gelletly M. B Gomez-Hornillos V. Gorlychev J. Hakala A. Jokinen M. D. Jordan A. Kankainen P. Karvonen V. S. Kolhinen F. G Kondev T. Martinez E. Mendoza F. Molina I. Moore A. Perez Zs. Podolyák H. Penttilä P. H. Regan M. Reponen J. Rissanen B. Rubio T. Shiba ¹ A. A. Sonzogni C. Weber

1 SUBATECH - Laboratoire SUBATECH Nantes

Abstract : The antineutrino spectra measured in recent experiments at reactors are inconsistent with calculations based on the conversion of integral beta spectra recorded at the ILL reactor. $^{92}$Rb makes the dominant contribution to the reactor spectrum in the 5-8 MeV range but its decay properties are in question. We have studied $^{92}$Rb decay with total absorption spectroscopy. Previously unobserved beta feeding was seen in the 4.5-5.5 region and the GS to GS feeding was found to be 87.5(25)%. The impact on the reactor antineutrino spectra calculated with the summation method is shown and discussed.

Type de document :

Article dans une revue

Physical Review Letters, American Physical Society, 2015, 110 (10), pp.102503. 〈10.1103/PhysRevLett.115.102503〉

Domaine :

Physique [physics] / Physique Nucléaire Expérimentale [nucl-ex]

Physique [physics] / Physique des Hautes Energies - Expérience [hep-ex]

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http://hal.in2p3.fr/in2p3-01163990
Contributeur : Sylvie Flores <>
Soumis le : mardi 16 juin 2015 - 07:52:53
Dernière modification le : jeudi 5 avril 2018 - 10:36:16

Total absorption spectroscopy study of $^{92}$Rb decay: a major contributor to reactor antineutrino flux

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Total absorption spectroscopy study of $^{92}$Rb decay: a major contributor to reactor antineutrino flux

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