High Energy Physics Seminar
Speaker: Jim Napolitano, Temple University
Title: Neutrino Spectra from Nuclear Reactors
Refreshments available at 1:30 pm.
Date: Tue, 14 Mar 2017, 1:45 pm - 2:45 pm
Location: 1400 BPS Bldg.
Nuclear reactors are powerful sources of electron antineutrinos because fission fragments are neutron-rich isotopes. Reactors were used to discover the neutrino, and to uncover neutrino oscillations between the first & second and first & third generations, among other things. The biggest stumbling block, however, has been our relatively poor knowledge of the underlying neutrino rate and spectrum. Recent, precision measurements have demonstrated new oddities in the neutrino spectrum, adding to the many questions we already had.
This talk will review some of the recent discoveries using reactor neutrinos, including precision measurements from the Daya Bay Reactor Neutrino Experiment. Included will be our measurements of the spectrum, and the new questions that have been raised. We will discuss some of the underlying nuclear physics, and its uncertainties, and what measurements might be made to help clarify the situation. We'll conclude by discussing the PRecision Oscillation and SPECTrum (PROSPECT) experiment at the HFIR reactor at Oak Ridge, a search for sterile neutrinos at a well understood research reactor.