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dc.contributor.author
Nietiadi, Maureen L.
dc.contributor.author
Rosandi, Yudi
dc.contributor.author
Bringa, Eduardo Marcial
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dc.contributor.author
Urbassek, Herbert M.
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dc.date.available
2024-07-08T11:10:32Z
dc.date.issued
2022-02
dc.identifier.citation
Nietiadi, Maureen L.; Rosandi, Yudi; Bringa, Eduardo Marcial; Urbassek, Herbert M.; Peripheral Collisions of Ice-covered Silica Dust Grains; IOP Publishing; Astrophysical Journal; 925; 2; 2-2022; 1-8
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/239280
dc.description.abstract
Collisions with ice-covered silica grains are studied using molecular-dynamics simulation, with a focus on the influence of the impact parameter on the collision dynamics. The ice mantle induces an attractive interaction between the colliding grains, which is caused by the melting of the mantles in the collision zone and their fusion. For noncentral collisions, this attractive interaction leads to a deflection of the grain trajectories and, at smaller velocities, to the agglomeration ("sticking") of the colliding grains. The bouncing velocity, which is defined as the smallest velocity at which grains bounce off each other rather than stick, shows only a negligible dependence on the impact parameter. Close to the bouncing velocity, a temporary bridge builds up between the colliding grains, which, however, ruptures when the collided grains separate and relaxes to the grains. At higher velocities, the ice in the collision zone is squeezed out from between the silica cores, forming an expanding disk, which ultimately tears and dissolves into a multitude of small droplets. An essential fraction of the ice cover in the collision zone is then set free to space. Astrophysical implications include the possibility that organic species that might be present in small concentrations on the ice surface or at the ice-silica interface are liberated to space in such noncentral collisions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ICE GRAINS
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COLLISIONS
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MOLECULAR DYNAMICS
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Peripheral Collisions of Ice-covered Silica Dust Grains
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-07-08T10:09:41Z
dc.journal.volume
925
dc.journal.number
2
dc.journal.pagination
1-8
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Nietiadi, Maureen L.. Universität Kaiserslautern; Alemania
dc.description.fil
Fil: Rosandi, Yudi. Universitas Padjadjaran; Indonesia
dc.description.fil
Fil: Bringa, Eduardo Marcial. Universidad de Mendoza. Facultad de Ingenieria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Mayor; Chile
dc.description.fil
Fil: Urbassek, Herbert M.. Universität Kaiserslautern; Alemania
dc.journal.title
Astrophysical Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ac403d
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/1538-4357/ac403d
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