ON THE POSSIBILITY TO SIMULTANEOUSLY DETERMINE THE LONG-TERM AVERAGE FLUXES OF SOLAR pp-NEUTRINOS AND COSMIC RAY MUONS

The Allchar mine in the southern FYR Macedonia contains the world's largest known concentration of thallium bearing minerals. LOREX (acronym for the geo-chemical LORandite EXperiment) is an international collaboration exploring the opportunity to use the rare mineral lorandite (TlAsS2) for the determination of the solar pp-neutrino flux, averaged over the 4.3 million year age of the deposit. Here we discuss the possibility to determine simultaneously both the solar neutrino and the cosmic ray in non flux, as over the same period of time Cosmic-ray notions participate in the reaction Tl-205(mu p, n)Pb-205, whereas the neutrinos induce the capture reaction Tl-205(nu(e), e)Pb-205* -> Pb-205. Both fluxes can in principle be determined by counting the number of atoms of the long-lived Pb-205 present in the mineral, produced by both muons and neutrinos in the reactions with the most abundant stable isotope, Tl-205.