Geochemical Determination of the Solar pp-Neutrino Flux with LOREX: A Progress Report

LOREX (LORandite EXperiment) is a geochemical experiment addressing the solar (pp) neutrino flux for the period of 4.3 Ma from the reaction 205Tl + ve → 205Pb + e- with an unprecedentedly low threshold (52 keV) for solar pp-neutrino capture. A decisive step for this purpose is getting the precise, b...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-09, Vol.888 (1), p.12192
Main Authors: Pavićević, M K, Henning, W F, Bosch, F, Uesaka, T, Litvinov, Y A, Kubo, T, Pejović, V, Amthauer, G, Aničin, I, Boev, B, Cvetković, V
Format: Article
Language:English
Subjects:
Geochemistry
Lead isotopes
Neutrinos
Physics
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Summary:LOREX (LORandite EXperiment) is a geochemical experiment addressing the solar (pp) neutrino flux for the period of 4.3 Ma from the reaction 205Tl + ve → 205Pb + e- with an unprecedentedly low threshold (52 keV) for solar pp-neutrino capture. A decisive step for this purpose is getting the precise, background-corrected ratio of 205Pb/205Tl in lorandite (TlAsS2). This report presents the status of major challenges being addressed, in particular the determination of the paleo-depth of lorandite, including the eroded layer over 4.3 Ma, as well as the choice of appropriate techniques for extraction, separation and quantitative determination of the ultra-low 205Pb concentration in the extracted lorandite samples.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/888/1/012192