Mejía, C. ; Bender, M. ; Severin, D. ; Trautmann, C. ; Boduch, Ph. ; Bordalo, V. ; Domaracka, A. ; Lv, X. Y. ; Martinez, R. ; Rothard, H. (2015)
Radiolysis and sputtering of carbon dioxide ice induced by swift Ti, Ni, and Xe ions.
In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 365
doi: 10.1016/j.nimb.2015.09.039
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Solid carbon dioxide (CO2) is found in several bodies of the solar system, the interstellar medium (ISM) and young stellar objects, where it is exposed to cosmic and stellar wind radiation. Here, the chemical and physical modifications induced by heavy ion irradiation of pure solid CO2 at low temperature (T = 15-30 K) are analyzed. The experiments were performed with Ti (550 MeV) and Xe (630 MeV) ions at the UNILAC of GSI/Darmstadt and with Ni ions (46 and 52 MeV) at IRRSUD of GANIL/Caen. The evolution of the thin CO2 ice films (deposited on a Csl window) was monitored by mid-infrared absorption spectroscopy (FTIR). The dissociation rate of CO2, determined from the fluence dependence of the IR absorption peak intensity, is found to be proportional to the electronic stopping power S-e. We also confirm that the sputtering yield shows a quadric increase with electronic stopping power. Furthermore, the production rates of daughter molecules such as CO, CO3 and O-3 were found to be linear in S-e. (C) 2015 Elsevier B.V. All rights reserved.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Mejía, C. ; Bender, M. ; Severin, D. ; Trautmann, C. ; Boduch, Ph. ; Bordalo, V. ; Domaracka, A. ; Lv, X. Y. ; Martinez, R. ; Rothard, H. |
| Art des Eintrags: | Bibliographie |
| Titel: | Radiolysis and sputtering of carbon dioxide ice induced by swift Ti, Ni, and Xe ions |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Dezember 2015 |
| Verlag: | Elsevier Science BV, Netherlands |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |
| Jahrgang/Volume einer Zeitschrift: | 365 |
| DOI: | 10.1016/j.nimb.2015.09.039 |
| Kurzbeschreibung (Abstract): | Solid carbon dioxide (CO2) is found in several bodies of the solar system, the interstellar medium (ISM) and young stellar objects, where it is exposed to cosmic and stellar wind radiation. Here, the chemical and physical modifications induced by heavy ion irradiation of pure solid CO2 at low temperature (T = 15-30 K) are analyzed. The experiments were performed with Ti (550 MeV) and Xe (630 MeV) ions at the UNILAC of GSI/Darmstadt and with Ni ions (46 and 52 MeV) at IRRSUD of GANIL/Caen. The evolution of the thin CO2 ice films (deposited on a Csl window) was monitored by mid-infrared absorption spectroscopy (FTIR). The dissociation rate of CO2, determined from the fluence dependence of the IR absorption peak intensity, is found to be proportional to the electronic stopping power S-e. We also confirm that the sputtering yield shows a quadric increase with electronic stopping power. Furthermore, the production rates of daughter molecules such as CO, CO3 and O-3 were found to be linear in S-e. (C) 2015 Elsevier B.V. All rights reserved. |
| Freie Schlagworte: | Heavy ions, Astrophysical ices, Radiation chemistry |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 29 Feb 2016 13:19 |
| Letzte Änderung: | 29 Feb 2016 13:19 |
| PPN: | |
| Sponsoren: | This work was co-funded by the European Commission, FP7 for RTD (2007-2013), Capacities Program (Contract No. 262010, ENSAR);, supported by the CAPES-COFECUB French-Brazilian exchange program and the CSC Chinese Scholarship Council., The Brazilian agencies CNPq (INEspaco) and FAPERJ are also acknowledged. |
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