Sputtering from a porous material by penetrating ions

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dc.contributorVirginia Techen
dc.contributor.authorRodriguez-Nieva, J. F.en
dc.contributor.authorBringa, Eduardo M.en
dc.contributor.authorCassidy, T. A.en
dc.contributor.authorJohnson, R. E.en
dc.contributor.authorCaro, Alfredoen
dc.contributor.authorFama, M.en
dc.contributor.authorLoeffler, M. J.en
dc.contributor.authorBaragiola, R. A.en
dc.contributor.authorFarkas, Dianaen
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.date.accessed2014-02-05en
dc.date.accessioned2014-02-25T13:57:07Zen
dc.date.available2014-02-25T13:57:07Zen
dc.date.issued2011-12-01en
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.en
dc.description.sponsorshipCONICETen
dc.description.sponsorshipComision Nacional de Energia Atomica (CNEA)en
dc.description.sponsorshipNSF PICT2009-0092en
dc.format.mimetypeapplication/pdfen
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/L5en
dc.identifier.doihttps://doi.org/10.1088/2041-8205/743/1/l5en
dc.identifier.issn2041-8205en
dc.identifier.urihttp://hdl.handle.net/10919/25562en
dc.identifier.urlhttp://iopscience.iop.org/2041-8205/743/1/L5/pdf/2041-8205_743_1_L5.pdfen
dc.language.isoen_USen
dc.publisherIOP Publishing Ltd.en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAtomic processesen
dc.subjectMethods: numericalen
dc.subjectMolecular processesen
dc.subjectPlanets anden
dc.subjectSatellites: surfacesen
dc.subjectRadiation mechanisms: generalen
dc.subjectMolecular dynamicsen
dc.subjectDust grainsen
dc.subjectCosmic-raysen
dc.subjectRegolithen
dc.titleSputtering from a porous material by penetrating ionsen
dc.title.serialAstrophysical Journal Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
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