Total Absorption Spectroscopy Study of Rb92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape

A.-A. Zakari-Issoufou et al.
Phys. Rev. Lett. 115, 102503 – Published 4 September 2015

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. Rb92 makes the dominant contribution to the reactor antineutrino spectrum in the 5–8 MeV range but its decay properties are in question. We have studied Rb92 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.

  • Figure
  • Figure
  • Figure
  • Received 22 April 2015

DOI:https://doi.org/10.1103/PhysRevLett.115.102503

© 2015 American Physical Society

Authors & Affiliations

Click to Expand

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 115, Iss. 10 — 4 September 2015

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×