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The effect of irradiation on the magnetic properties of rock and synthetic samples: Implications to irradiation of extraterrestrial materials in space

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dc.contributor.author Bezaeva N.
dc.contributor.author Gattacceca J.
dc.contributor.author Rochette P.
dc.contributor.author Duprat J.
dc.contributor.author Rizza G.
dc.contributor.author Vernazza P.
dc.contributor.author Trukhin V.
dc.contributor.author Skripnik A.
dc.date.accessioned 2018-09-18T20:18:11Z
dc.date.available 2018-09-18T20:18:11Z
dc.date.issued 2015
dc.identifier.issn 1069-3513
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/138495
dc.description.abstract © 2015, Pleiades Publishing, Ltd. We report here the results of laboratory analog experiments to consider the potential effects of solar energetic particles (SEP or solar-flare-associated particles) and galactic cosmic rays (GCR) on the magnetic properties of extraterrestrial materials. We carried out proton bombardment experiments (with irradiation energies E<inf>1</inf>=400, E<inf>2</inf> =850 keV and three irradiation fluences in 10<sup>14</sup>–10<sup>16</sup>p/cm<sup>2</sup> range) and lead-ion bombardment experiments (E =1 GeV) on (previously demagnetized by 120 mT alternating magnetic field) rock and synthetic samples with the following magnetic carriers: metallic iron and nickel iron, Ti-rich and Ti-free magnetite, pyrrhotite. Irradiation experiments resulted in either further demagnetization or magnetization of irradiated samples depending on the type of magnetic mineralogy and type of ionizing radiation involved. Apart for the formation of radiation-induced remanent magnetization (RIRM), we observed major changes in bulk magnetic properties, i.e., a moderate to dramatic decrease (up to 93%) in the coercivity of remanence B<inf>cr</inf> for all iron-bearing phases (iron-in-epoxy and Bensour meteorite samples). Contrary to iron-bearing samples, several magnetite-bearing samples experienced a radiation-induced magnetic hardening (increase in B<inf>cr</inf>). Magnetic hardening was also observed for Ar<sup>2+</sup> ion-irradiated nickel iron-bearing HED meteorites, measured for comparison with the previously stated results. Therefore, the combined effect of SEP with GCR may magnetically soften iron-bearing materials and harden magnetite-bearing materials. In order to answer the question wether RIRM may account for natural remanent magnetization of meteorites and lunar samples, physical mechanism of RIRM formation and potential dependence of RIRM intensity on the background magnetic field present during irradiation event should be investigated.
dc.relation.ispartofseries Izvestiya, Physics of the Solid Earth
dc.subject argon ions
dc.subject extraterrestrial materials
dc.subject irradiation
dc.subject lead ions
dc.subject meteorites
dc.subject protons
dc.subject rock magnetism
dc.title The effect of irradiation on the magnetic properties of rock and synthetic samples: Implications to irradiation of extraterrestrial materials in space
dc.type Article
dc.relation.ispartofseries-issue 3
dc.relation.ispartofseries-volume 51
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 336
dc.source.id SCOPUS10693513-2015-51-3-SID84928891723


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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