M. Bhattacharya et al., Measurement of Gamow-Teller strength for Yb-176 -> Lu-176 and the efficiency of a solar neutrino detector, PHYS REV L, 85(21), 2000, pp. 4446-4449
We report a 0 degrees Yb-176(p, n)Lu-176 measurement at IUCF where we used
120 and 160 MeV protons and the energy dependence method to determine Gamow
-Teller (GT) matrix elements relative to the modal independent Fermi matrix
element. The data show that there is an isolated concentration of GT stren
gth in the low-lying 1(+) states making the proposed Low Energy Neutrino Sp
ectroscopy detector (based on neutrino captures on Yb-176) sensitive to pp
and Be-7 neutrinos and a promising detector to resolve the solar neutrino p
roblem.