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| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Sociedade Brasileira de Física
2015
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=46438835001 |
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Inhaltsangabe:
- A Simple Model for Ice Compaction Data Induced by Low Energy Ion Irradiation A. L. F. de Barros C. Mejía W. A. M. Morgado L. F. Almeida E. F. da Silveira Física, Astronomía y Matemáticas Cosmicrays Modeling data Molecules ionization A connection between the compaction of amor- phous solid water (ASW) during energetic ion irradiation and the disappearing of water dangling bonds (OH-db) has been analyzed particularly by the Palumbo et al. and by Baragiola etal. Inthis work,a further discussionofthe process for inducing the compaction is presented. Simple models for OH-db evolution for irradiated water ice are discussed. Liter- ature results on the OH-db disappearance in ices bombarded by 100 – 200 keV H + ions and on the comparison of porosity and OH-db results for 200 keV Ar + ions are revisited. It is observed that for both, porosity decrease (compaction) and OH-db absorption signal decrease, experimental data can be well fitted by the sum of two decreasing exponentials with similar sets of parameters. Although a clear explanation for this correlation cannot be extracted, it suggests strongly that compaction and OH-db destruction are both triggered by two different processes. 2015 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46438835001 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2 Vol.45