A possible gas for solar neutrino spectroscopy

Details A possible gas for solar neutrino spectroscopy A possible gas for solar neutrino spectroscopy

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aph.....4..333a&link_type=abstract

ASTROPARTICLE PHYSICS, Volume 4, Issue 4, p. 333-341.

Physics

7

Scientific paper

We discuss the possibility of using pure CF_4 to fill a 2000 m^3 Time Projection Chamber in order to detect the solar neutrinos through the elastic scattering nu_e+e^- -->nu_e+e^-, with the threshold of 100 keV on the kinetic energy of the recoiling electron. In a volume of 2000 m^3 of CF_4 at normal pressure and room temperature, which corresponds to a mass of 7.4 ton, we expect ~ 3300 of such events per year. The detector can give the spectrum of the low energy neutrinos from the Sun and it can identify solar neutrinos of different origin: pp, ^7Be, and, eventually, ^8B. We find that ^14C is a possible severe source of background: it is necessary to have a ratio ^14C/^12C lower than 10^-19 in order to be able to identify the pp neutrinos.

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