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Specificity of /sup 71/Ga(p,n)/sup 71/Ge at 35 MeV for Gamow-Teller strength

Conference ·
OSTI ID:5546713
The motivation for considering the /sup 71/Ga(p,n)/sup 71/Ge reaction is to help determine the properties of /sup 71/Ga as a detector of solar neutrinos. The proposed solar neutrino experiment, /sup 71/Ga(nu,e/sup -/)/sup 71/Ge, has a threshold of only .236 MeV, and is thus sensitive to neutrinos produced in the basic burning process in the sun p + p ..-->.. /sup 2/H + e/sup +/ + nu, which has a .420 MeV endpoint. The excitation of the (5/2)/sup -/ state at .175 MeV in /sup 71/Ge could be important, however. Were the Gamow-Teller (G-T) transition to the 175 keV state equal in strength to the ground state transition there would be approx. 25% added to the detector signal, the greater part of this coming from the /sup 7/Be neutrinos; the desired sensitivity to the p-p neutrinos would then be less.
Research Organization:
Brookhaven National Lab., Upton, NY (USA); USDOE, Washington, DC; Michigan State Univ., East Lansing (USA); Ohio Univ., Athens (USA)
DOE Contract Number:
AC02-76CH00016
OSTI ID:
5546713
Report Number(s):
BNL-36439; CONF-850315-3; ON: DE85011837
Country of Publication:
United States
Language:
English