Total absorption spectroscopy study of $^{92}$Rb decay: a major contributor to reactor antineutrino flux
A. -A. Zakari-Issoufou
(1)
,
Muriel Fallot
(1)
,
Amanda Porta
,
A. Algora
,
J. L. Tain
,
E. Valencia
,
S. Rice
,
van Minh Bui
(1)
,
S. Cormon
(1)
,
Magali 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
Muriel Fallot
- Function : Author
- PersonId : 177532
- IdHAL : muriel-fallot
- ORCID : 0000-0001-8650-2578
- IdRef : 070163537
Amanda Porta
- Function : Author
- PersonId : 180451
- IdHAL : amanda-porta
- ORCID : 0000-0003-4747-6463
A. Algora
- Function : Author
J. L. Tain
- Function : Author
E. Valencia
- Function : Author
S. Rice
- Function : Author
Magali Estienne
- Function : Author
- PersonId : 179790
- IdHAL : magali-estienne
- ORCID : 0000-0003-0687-5580
J. Agramunt
- Function : Author
J. Äystö
- Function : Author
M. Bowry
- Function : Author
J. A. Briz
- Function : Author
R. Caballero-Folch
- Function : Author
D. Cano-Ott
- Function : Author
V. -V. Elomaa
- Function : Author
T. Eronen
- Function : Author
E. Estévez
- Function : Author
G. F. Farrelly
- Function : Author
A. R. Garcia
- Function : Author
W. Gelletly
- Function : Author
M. B Gomez-Hornillos
- Function : Author
V. Gorlychev
- Function : Author
J. Hakala
- Function : Author
A. Jokinen
- Function : Author
M. D. Jordan
- Function : Author
A. Kankainen
- Function : Author
P. Karvonen
- Function : Author
V. S. Kolhinen
- Function : Author
F. G Kondev
- Function : Author
T. Martinez
- Function : Author
- PersonId : 755361
- ORCID : 0000-0001-5477-6021
E. Mendoza
- Function : Author
F. Molina
- Function : Author
I. Moore
- Function : Author
A. Perez
- Function : Author
Zs. Podolyák
- Function : Author
H. Penttilä
- Function : Author
P. H. Regan
- Function : Author
M. Reponen
- Function : Author
J. Rissanen
- Function : Author
B. Rubio
- Function : Author
A. A. Sonzogni
- Function : Author
C. Weber
- Function : Author
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.