Solar neutrinos: Real-time experiments

Details Solar neutrinos: Real-time experiments Solar neutrinos: Real-time experiments

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993nyasa.688..344t&link_type=abstract

Texas/PASCOS '92: Relativistic Astrophysics and Particle Cosmology. Edited by Carl W. Akerlof and Mark A. Srednicki. Annals of

Astronomy and Astrophysics

Astrophysics

Energy Distribution, Flux (Rate), Solar Flux, Solar Neutrinos, Space Observations (From Earth), Argon, Deuterons, Electrons, Energy Spectra, Krypton, Photomultiplier Tubes, Radiation Measuring Instruments

Scientific paper

This report outlines the principle of real-time solar neutrino detection experiments by detecting electrons with suitable target material, via Charged-Current (CC) reaction using conventional counting techniques developed in high-energy physics. Only B-8 neutrinos can be detected by minimum detectable energy of several MeV. The MSW (Mikheyev, Smirnov, Wolfenstein) effect not only distorts the energy spectrum but also induces new type of neutrinos, i.e. mu-neutrinos or tau-neutrinos. These neutrinos do not participate in the CC reaction. Therefore real-time experiment is to be sensitive to Neutral Current (NC) reactions. It is a challenge to eliminate environment background as much as possible and to lower the minimum detectable energy to several 100 keV, which will enable observation of Be-7 neutrinos. Target particles of real-time experiments currently running and under construction or planning are electron, deuteron, or argon. The relevant reactions corresponding to CC reaction and some relevant comments on the following targets are described: (1) electron target; (2) deuteron target; and (3) argon target. On-going experiment and future experiments for real-time neutron detection are also outlined.

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