Appliance of the long-living cosmogen (26al,10be) nucleoids in the determination of the level of erosion in the area of the Alshar deposit

Boev, Blazo (2010) Appliance of the long-living cosmogen (26al,10be) nucleoids in the determination of the level of erosion in the area of the Alshar deposit. [Project]

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Abstract

The project proposal titles Appliance of the long-living cosmogen (26al,10be) nucleoids in the determination of the level of erosion at the area of the Alshar deposit aims at giving an answer on the key question for the possible usage of the mineral thallium-lorandite as a detector of the solar neutrinos. The determination of the level of erosion in the area of the mineral location Alshar in the period of its formation ( 5 million years ago) until present time, with appliance of the cosmogen radio-nucleoids 26Al and 10Be, is a particularly important question from an aspect of usage of the minerals of thallium as detectors of the neutrino originating from the Sun. The location Alshar is a world rarity due to its presence of the minerals of thallium. Because of thе fact that there are significant quantities of minerals of thallium (lorandite) in Alshar, and also because of the fact that these minerals can be used as detectors of the neutrino originating from the Sun, the location Alshar is of interest for the European and world science. The Sun is a strong source of neutrinos (its flux is е Ф=6.5 x 1010[ncm-2sec-1] as a consequence of the thermo-nuclear reactions which take place in its nucleus. With the detection of the solar neutrino we expect answers on some very fundamental questions of the astrophysics, atomic physic and the physic of the elementary particles like: the evolution of the Cosmos and the Solar system, gravitational collapses, weak electromagnetic interactions, the conservation of the leptonic number and others. (Bahcall,1989). The dominant component in the spectra of the solar neutrino consists of the so called pp-neutrinos (over 93 %) whose flux can be determined through appliance of radio-chemical and geo-chemical detectors. One of the most significant detectors is 205Tl, which has the lowest level of detection (Qec=53[keV] and the longest explosion τ=4.2[Мy] (million years). The principle of the detection of the neutrinos is based on the nuclear reaction: 205Tl (νe,e-)205Pb*→205Pb…….(1) The occupation of the neutrinos (νe) from the isotope 205Tl. As a product of the reaction, after emission of (e-), the radio-nucleoid is formed 205Pb with a period of half-decomposition Т1/2=14.8[Мy]. The appliance of 205Tl as a detector of the solar neutrino is only possible with the usage of the mineral lorandite (TlAsS2) from the location Alshar which is found in our country, Republic of Macedonia (Freedman et all, 1976). It’s been almost 20 years as we work on solving this significant complex, multidisciplinary problem, in cooperation with many international institutions from Europe within the frames of the project LOREX, as a shortening of the words LORandit and EXperiment, So far, within the frames of these researches we have gained large number of results in relation to: the genesis of the Alshar deposit and its structural geological characteristics; geochemical characteristics of the lorandit and the co-genetic monitoring minerals; the geological age of the deposit, and other. All these results are directed towards the possible appliance of the lorandit from Alshar as a detector of the neutrino originating from the Sun. In a direction of a full answer to the question for appliance of the lorandite as a detector of the neutrino, still remains the answer linked to the question for the real depth onto which the lorandite is formed, that is, the determination of the level of erosion as a key question in the further work at the projects (LOREX

Item Type: Project
Subjects: Natural sciences > Earth and related environmental sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Marijana Kroteva
Date Deposited: 30 Nov 2012 15:04
Last Modified: 03 Dec 2012 13:42
URI: http://eprints.ugd.edu.mk/id/eprint/2656

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