Title: Reveal the Mantle and K-40 Components of Geoneutrinos with Liquid Scintillator Cherenkov Neutrino Detectors,
Abstract: In this article we present an idea of using liquid scintillator Cherenkov
neutrino detectors to detect the mantle and K-40 components of geoneutrinos.
Liquid scintillator Cherenkov detectors feature both energy and direction
measurement for charge particles. Geoneutrinos can be detected with the elastic
scattering process of neutrino and electron. With the directionality, the
dominant intrinsic background originated from solar neutrinos in common liquid
scintillator detectors can be suppressed. The mantle geoneutrinos can be
distinguished because they come mainly underneath. The K-40 geoneutrinos can
also be identified, if the detection threshold for direction measurement can be
lower than, for example, 0.8 MeV. According to our calculation, a moderate,
kilo-ton scale, detector can observe tens of candidates, and is a practical
start for an experiment.