The potential to probe solar neutrino physics with LiCl water solution

solar neutrino detector relying on the charged-current (CC) interaction of ν _e on ^7Li is attractive. The total CC interaction cross-section weighted by the solar ^8 B electron neutrino spectrum is approximately 60 times that of the neutrino-electron elastic scattering process. The final state effective kinetic energy after the CC interaction on ^7Li directly reflects the neutrino energy, which stands in sharp contrast to the plateau structure of recoil electrons of the elastic scattering. The recent measurement of the optical properties of saturated LiCl water solution, especially the long attenuation length, has once again aroused our interest in LiCl. In this work, with new B(GT) experimental measurements, the CC cross-section on ^7Li is reevaluated to be 3.759× 10^-42 cm^2 . Given the high solubility of LiCl of 74.5 g/100 g water at 10 ^∘ C and the high natural abundance of 92.41