We explore the feasibility of using the Moon as a detector of extremely high
energy (>10^19 eV) cosmic rays and neutrinos. The idea is to use the existing
radiotelescopes on Earth to look for short pulses of Cherenkov radiation in the
GHz range emitted by showers induced just below the surface of the Moon when
cosmic rays or neutrinos strike it. We estimate the energy threshold of the
technique and the effective aperture and volume of the Moon for this detection.
We apply our calculation to obtain the expected event rates from the observed
cosmic ray flux and several representative theoretical neutrino fluxes.Comment: 11 pages, Latex, aipproc.sty and epsfig.sty. 5 ps figures. Talk
presented by J. Alvarez-Muniz at the 1st International Workshop on Radio
Detection of High Energy Particles (RADHEP-2000), UCLA, November 2000. Some
typos corrected. Fig.4 caption extende
