2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/204780We summarize a novel approach which has been recently proposed for direct detection of low energy neutrino backgrounds such as the cosmological relic neutrinos, exploiting neutrino/antineutrino capture on nuclei that spontaneously undergo beta decay.Talk given by G. Mangano at TAUP2007 Conference, Sendai, Japan, September 2007Astrophysicstext