Adsorption of Organic Isomers on Water Ice Surfaces: A Study of Acetic Acid and Methyl Formate

2011 ◽  
Vol 115 (26) ◽  
pp. 12920-12928 ◽  
Author(s):  
M. Bertin ◽  
C. Romanzin ◽  
X. Michaut ◽  
P. Jeseck ◽  
J.-H. Fillion
Keyword(s):  
Acetic Acid ◽  
Methyl Formate ◽  
Water Ice ◽  
Ice Surfaces

scholarly journals Electron-Promoted Desorption from Water Ice Surfaces: Neutral Gas-Phase Products

2017 ◽  
Vol 1 (4) ◽  
pp. 209-215 ◽  
Author(s):  
Ali G. M. Abdulgalil ◽  
Alexander Rosu-Finsen ◽  
Demian Marchione ◽  
John D. Thrower ◽  
Mark P. Collings ◽  
...  
Keyword(s):  
Gas Phase ◽  
Water Ice ◽  
Neutral Gas ◽  
Ice Surfaces

Sputtering of water ice surfaces and the production of extended neutral atmospheres

1995 ◽  
Vol 100 (E12) ◽  
pp. 26387 ◽  
Author(s):  
M. Shi ◽  
R. A. Baragiola ◽  
D. E. Grosjean ◽  
R. E. Johnson ◽  
S. Jurac ◽  
...  
Keyword(s):  
Water Ice ◽  
Ice Surfaces

scholarly journals Interstellar Glycolaldehyde, Methyl Formate, and Acetic Acid. I. A Bimodal Abundance Pattern in Star-forming Regions

2019 ◽  
Vol 883 (2) ◽  
pp. 129 ◽  
Author(s):  
Samer J. El-Abd ◽  
Crystal L. Brogan ◽  
Todd R. Hunter ◽  
Eric R. Willis ◽  
Robin T. Garrod ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Methyl Formate ◽  
Abundance Pattern ◽  
Star Forming ◽  
Star Forming Regions

Destruction of C2H4O2 isomers in ice-phase by X-rays: Implication on the abundance of acetic acid and methyl formate in the interstellar medium

2017 ◽  
Vol 13 (S332) ◽  
pp. 418-424
Author(s):  
Marina G. Rachid ◽  
K. Faquine ◽  
S. Pilling
Keyword(s):  
Acetic Acid ◽  
Cross Sections ◽  
Methyl Formate ◽  
X Rays ◽  
Formation Cross Section ◽  
X Ray ◽  
Synchrotron Light ◽  
The Difference ◽  
Astrophysical Ices

AbstractC2H4O2 isomers, methyl formate (HCOOCH3), acetic acid (CH3COOH) and glycoaldehyde (HOCH2CHO), have been detected in a lot of sources in ISM. However, their abundances are very different, with methyl formate much more abundant than the other two isomers. This fact may be related to the different destruction by ionizing radiation of these molecules. The goal of this work is experimentally study the photodissociation processes of methyl formate and acetic acid ices when exposed to broadband soft X-ray from 6 up to 2000 eV. The experiments were performed coupled to the SGM beamline in the Brazilian Synchrotron Light Source (LNLS/CNPEM) at Campinas, Brazil. The simulated astrophysical ices (12K) were monitored throughout the experiment using infrared vibrational spectroscopy. The analysis of processed ices allowed the determination of the effective destruction cross sections of the parent molecules as well as the effective formation cross section of daughter molecular species. The relative abundance between acetic acid and methyl formate (NCH3COOH/NHCOOCH3) in different astronomical scenarios and their column density evolution in the presence of X-rays were calculated and our results suggests that such radiation field can be one of the factors that explain the difference in the isomers C2H4O2 abundances. We also quantified the daugther species after the establishment of a chemical equilibrium in the samples.

scholarly journals Mobility of D atoms on porous amorphous water ice surfaces under interstellar conditions

2008 ◽  
Vol 492 (1) ◽  
pp. L17-L20 ◽  
Author(s):  
E. Matar ◽  
E. Congiu ◽  
F. Dulieu ◽  
A. Momeni ◽  
J. L. Lemaire
Keyword(s):  
Water Ice ◽  
Ice Surfaces
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