Lorandite from Allchar as geochemical detector for pp-solar neutrinos

Miodrag K. Pavićević, Georg Amthauer, Vladica Cvetković, Blazo Boev, Vladan Pejović, Walter F. Henning, Fritz Bosch, Yuri A. Litvinov, Reinhard Wagner
2018 Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment  
A B S T R A C T LOREX (LORandite EXperiment) is a geochemical project addressing the solar proton-proton neutrino flux for the period of 4.31(2) Ma from the reaction 205 Tl + ν e → 205 Pb + e − with a very low threshold (52 keV) for solar pp-neutrino capture. A decisive step for this purpose is to obtain the precise, background-corrected ratio of 205 Pb/ 205 Tl in the mineral lorandite (TlAsS 2 ) as geochemical detector occurring in the ore deposit of Allchar in Macedonia. This study presents a
more » ... is study presents a report on the excavation of lorandite bearing ore from adit P-21 of the ore body Crven Dol as well as on the separation of pure lorandite from the raw ore. A detailed mineralogical and chemical investigation of the separated lorandite is performed with special regard to the question of its use as detector for solar pp-neutrinos.
doi:10.1016/j.nima.2018.03.039 fatcat:ufc57ommw5d4bcu4nf72unb2hq