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dc.contributorVirginia Techen_US
dc.contributor.authorRodriguez-Nieva, J. F.en_US
dc.contributor.authorBringa, Eduardo M.en_US
dc.contributor.authorCassidy, T. A.en_US
dc.contributor.authorJohnson, R. E.en_US
dc.contributor.authorCaro, Alfredoen_US
dc.contributor.authorFama, M.en_US
dc.contributor.authorLoeffler, M. J.en_US
dc.contributor.authorBaragiola, R. A.en_US
dc.contributor.authorFarkas, Dianaen_US
dc.date.accessioned2014-02-25T13:57:07Z
dc.date.available2014-02-25T13:57:07Z
dc.date.issued2011-12-01
dc.identifier.citationJ. F. Rodriguez-Nieva et al. 2011. "sputtering from a porous material by penetrating ions," ApJ 743 L5 doi:10.1088/2041-8205/743/1/L5
dc.identifier.issn2041-8205
dc.identifier.urihttp://hdl.handle.net/10919/25562
dc.description.abstractPorous materials are ubiquitous in the universe and weathering of porous surfaces plays an important role in the evolution of planetary and interstellar materials. Sputtering of porous solids in particular can influence atmosphere formation, surface reflectivity, and the production of the ambient gas around materials in space. Several previous studies and models have shown a large reduction in the sputtering of a porous solid compared to the sputtering of the non-porous solid. Using molecular dynamics simulations we study the sputtering of a nanoporous solid with 55% of the solid density. We calculate the electronic sputtering induced by a fast, penetrating ion, using a thermal spike representation of the deposited energy. We find that sputtering for this porous solid is, surprisingly, the same as that for a full-density solid, even though the sticking coefficient is high.
dc.description.sponsorshipCONICET
dc.description.sponsorshipComision Nacional de Energia Atomica (CNEA)
dc.description.sponsorshipNSF PICT2009-0092
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_US
dc.publisherIOP Publishing Ltd.
dc.subjectAtomic processesen_US
dc.subjectMethods: numericalen_US
dc.subjectMolecular processesen_US
dc.subjectPlanets anden_US
dc.subjectSatellites: surfacesen_US
dc.subjectRadiation mechanisms: generalen_US
dc.subjectMolecular dynamicsen_US
dc.subjectDust grainsen_US
dc.subjectCosmic-raysen_US
dc.subjectRegolithen_US
dc.titleSputtering from a porous material by penetrating ionsen_US
dc.typeArticleen_US
dc.identifier.urlhttp://iopscience.iop.org/2041-8205/743/1/L5/pdf/2041-8205_743_1_L5.pdf
dc.date.accessed2014-02-05
dc.title.serialAstrophysical Journal Letters
dc.identifier.doihttps://doi.org/10.1088/2041-8205/743/1/l5
dc.type.dcmitypeTexten_US


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