Physical basis of the lithium experiment

A lithium detector is very efficient to measure the flux of CNO neutrinos from the Sun. Using a luminosity constrain it will be possible also to determine the total flux of pp-neutrinos with the uncertainty of about 1% if the flux of CNO neutrinos is measured by the accuracy of about 30%. For this one needs to measure the production rate from solar neutrinos with the accuracy at the level of 10%. This can be obtained within 5 years of measurements by using a 10 t lithium target. Usually the experiments on solar neutrinos are conducted during 10 years or more