Spectroscopy of low energy solar neutrinos by MOON: -Mo Observatory Of Neutrinos-

The MOON (Molybdenum Observatory Of Neutrinos) project aims at high sensitive studies of the double beta ( ββ ) decays with sensitivity to Majorana ν mass of the order of m ν > ∼ 0.03  eV and the charged-current (CC) neutrino spectroscopy of the major components of the pp and 7 Be solar ν 's. The present status of MOON for the low energy solar ν experiment is briefly discussed. The inverse β rays from solar- ν captures of 100 Mo are measured in delayed coincidence with the subsequent β decay of 100 Tc. MOON's exclusive CC value by 7 Be solar ν , together with the GNO CC data, will provide the pp solar ν flux with good accuracy.