Logo Repositorio Institucional

Please use this identifier to cite or link to this item: http://dspace.ucuenca.edu.ec/handle/123456789/35859
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMejia Guaman, Christian Fernando
dc.contributor.authorDomaracka, Alicja
dc.contributor.authorDartois, Enmanuel
dc.contributor.authorGodard, Marie
dc.contributor.authorFrota Da silveira, Enio
dc.contributor.authorFerreira De barros, Ana Lucía
dc.contributor.authorBoduch, Philippe
dc.contributor.authorRothard, Hermann
dc.contributor.authorBrunetto, Rosario
dc.contributor.authorDing, Jing Jie
dc.contributor.authorPino, Thomas
dc.contributor.authorChabot, Marin
dc.contributor.authorThomas, Jean Charles
dc.date.accessioned2021-03-15T22:34:48Z-
dc.date.available2021-03-15T22:34:48Z-
dc.date.issued2013
dc.identifier.issn0004-6361, e1432-0746
dc.identifier.urihttp://dspace.ucuenca.edu.ec/handle/123456789/35859-
dc.identifier.urihttps://www.aanda.org/articles/aa/full_html/2013/09/aa21636-13/aa21636-13.html
dc.description.abstractContext. Cosmic ray ion irradiation affects the chemical composition of and triggers physical changes in interstellar ice mantles in space. One of the primary structural changes induced is the loss of porosity, and the mantles evolve toward a more compact amorphous state. Previously, ice compaction was monitored at low to moderate ion energies. The existence of a compaction threshold in stopping power has been suggested. Aims. In this article we experimentally study the effect of heavy ion irradiation at energies closer to true cosmic rays. This minimises extrapolation and allows a regime where electronic interaction always dominates to be explored, providing the ice compaction cross section over a wide range of electronic stopping power. Methods. High-energy ion irradiations provided by the GANIL accelerator, from the MeV up to the GeV range, are combined with in-situ infrared spectroscopy monitoring of ice mantles. We follow the IR spectral evolution of the ice as a function of increasing fluence (induced compaction of the initial microporous amorphous ice into a more compact amorphous phase). We use the number of OH dangling bonds of the water molecule, i.e. pending OH bonds not engaged in a hydrogen bond in the initially porous ice structure as a probe of the phase transition. These high-energy experiments are combined with lower energy experiments using light ions (H, He) from other facilities in Catania, Italy, and Washington, USA. Results. We evaluated the cross section for the disappearance of OH dangling bonds as a function of electronic stopping power. A cross-section law in a large energy range that includes data from different ice deposition setups is established. The relevant phase structuring time scale for the ice network is compared to interstellar chemical time scales using an astrophysical model. Conclusions. The presence of a threshold in compaction at low stopping power suggested in some previous works seems not to be confirmed for the high-energy cosmic rays encountered in interstellar space. Ice mantle porosity or pending bonds monitored by the OH dangling bonds is removed efficiently by cosmic rays. As a consequence, this considerably reduces the specific surface area available for surface chemical reactions.
dc.language.isoes_ES
dc.sourceAstronomy & Astrophysics
dc.subjectExtinction
dc.subjectISM molecules
dc.subjectDust
dc.subjectCosmic rays
dc.subjectMolecular processes
dc.subjectLine profiles
dc.titleSwift heavy ion irradiation of water ice from MeV to GeV energies
dc.typeARTÍCULO
dc.ucuenca.idautor0000-0003-1197-7143
dc.ucuenca.idautor0301511556
dc.ucuenca.idautor0000-0003-3848-5130
dc.ucuenca.idautor0000-0002-1646-7866
dc.ucuenca.idautor0000-0003-0968-2055
dc.ucuenca.idautor0000-0001-7023-8282
dc.ucuenca.idautorSgrp-177-11
dc.ucuenca.idautor0000-0003-1585-2436
dc.ucuenca.idautorSgrp-177-6
dc.ucuenca.idautor0000-0003-4351-5365
dc.ucuenca.idautor0000-0001-6618-9772
dc.ucuenca.idautor0000-0002-7276-4021
dc.ucuenca.idautorSgrp-177-2
dc.identifier.doi10.1051/0004-6361/201321636
dc.ucuenca.versionVersión publicada
dc.ucuenca.areaconocimientounescoamplio05 - Ciencias Físicas, Ciencias Naturales, Matemáticas y Estadísticas
dc.ucuenca.afiliacionThomas, J., Grand Accélérateur National d Ions Lourds (Ganil), Caen, Francia
dc.ucuenca.afiliacionDartois, E., Universidad Paris Saclay, Saint Aubin, Francia
dc.ucuenca.afiliacionDing, J., Université de Caen Normandie, Caen, Francia
dc.ucuenca.afiliacionFerreira, A., Centro Federal de Educación Tecnológica Celso Suckow da Fonseca, Río de Janeiro, Brasil
dc.ucuenca.afiliacionBoduch, P., Université de Caen Normandie, Caen, Francia
dc.ucuenca.afiliacionBrunetto, R., Universidad Paris Saclay, Saint Aubin, Francia
dc.ucuenca.afiliacionChabot, M., Universidad Paris Saclay, Saint Aubin, Francia
dc.ucuenca.afiliacionDomaracka, A., Université de Caen Normandie, Caen, Francia
dc.ucuenca.afiliacionGodard, M., Universidad Paris Saclay, Saint Aubin, Francia
dc.ucuenca.afiliacionMejia, C., Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, Brasil
dc.ucuenca.afiliacionPino, T., Universidad Paris Saclay, Saint Aubin, Francia
dc.ucuenca.afiliacionRothard, H., Université de Caen Normandie, Caen, Francia
dc.ucuenca.afiliacionFrota, E., Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, Brasil
dc.ucuenca.correspondenciaMejia Guaman, Christian Fernando, christian.mejia@ucuenca.edu.ec
dc.ucuenca.volumenVolumen 557, número A97
dc.ucuenca.indicebibliograficoSCOPUS
dc.ucuenca.factorimpacto2.174
dc.ucuenca.cuartilQ1
dc.ucuenca.numerocitaciones0
dc.ucuenca.areaconocimientofrascatiamplio1. Ciencias Naturales y Exactas
dc.ucuenca.areaconocimientofrascatiespecifico1.3 Ciencias Físicas
dc.ucuenca.areaconocimientofrascatidetallado1.3.8 Astronomía(Incluye Astrofísica, Ciencia Espacial)
dc.ucuenca.areaconocimientounescoespecifico053 - Ciencias Físicas
dc.ucuenca.areaconocimientounescodetallado0533 - Física
dc.ucuenca.urifuentehttps://www.aanda.org/articles/aa/abs/2013/09/contents/contents.html?sort=article_number
Appears in Collections:Artículos

Files in This Item:
File Description SizeFormat 
documento.pdfdocument511.53 kBAdobe PDFThumbnail
View/Open


This item is protected by original copyright



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Centro de Documentacion Regional "Juan Bautista Vázquez"

Biblioteca Campus Central Biblioteca Campus Salud Biblioteca Campus Yanuncay
Av. 12 de Abril y Calle Agustín Cueva, Telf: 4051000 Ext. 1311, 1312, 1313, 1314. Horario de atención: Lunes-Viernes: 07H00-21H00. Sábados: 08H00-12H00 Av. El Paraíso 3-52, detrás del Hospital Regional "Vicente Corral Moscoso", Telf: 4051000 Ext. 3144. Horario de atención: Lunes-Viernes: 07H00-19H00 Av. 12 de Octubre y Diego de Tapia, antiguo Colegio Orientalista, Telf: 4051000 Ext. 3535 2810706 Ext. 116. Horario de atención: Lunes-Viernes: 07H30-19H00