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Please use this identifier to cite or link to this item: http://dspace.ucuenca.edu.ec/handle/123456789/35813
Title: Radiolysis and sputtering of carbon dioxide ice induced by swift Ti, Ni, and Xe ions
Authors: Mejia Guaman, Christian Fernando
Bender, M.
Severin, Daniel
Trautmann, Christina
Boduch, Philippe
Bordalo, Vinicius
Domaracka, Alicja
Lv, Xueyang
Martinez, Rafael
Rothard, Hermann
metadata.dc.ucuenca.correspondencia: Mejia Guaman, Christian Fernando, christian.mejia@ucuenca.edu.ec
Keywords: Heavy ions
Astrophysical ices
Radiation chemistry
metadata.dc.ucuenca.areaconocimientofrascatiamplio: 1. Ciencias Naturales y Exactas
metadata.dc.ucuenca.areaconocimientofrascatidetallado: 1.3.1 Física Atómica, Molecular y Química(Colisión,etc)
metadata.dc.ucuenca.areaconocimientofrascatiespecifico: 1.3 Ciencias Físicas
metadata.dc.ucuenca.areaconocimientounescoamplio: 05 - Ciencias Físicas, Ciencias Naturales, Matemáticas y Estadísticas
metadata.dc.ucuenca.areaconocimientounescodetallado: 0533 - Física
metadata.dc.ucuenca.areaconocimientounescoespecifico: 053 - Ciencias Físicas
Issue Date: 2015
metadata.dc.ucuenca.volumen: Volumen 365, Part B
metadata.dc.source: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
metadata.dc.identifier.doi: 10.1016/j.nimb.2015.09.039
metadata.dc.type: ARTÍCULO
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 CsI 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 Se. 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 O3 were found to be linear in Se.
URI: https://www.sciencedirect.com/science/article/abs/pii/S0168583X15008988
metadata.dc.ucuenca.urifuente: https://www.sciencedirect.com/journal/nuclear-instruments-and-methods-in-physics-research-section-b-beam-interactions-with-materials-and-atoms
ISSN: 0168-583X
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