Laboratory investigations of irradiated acetonitrile-containing ices on an interstellar dust analog

Ali Abdulgalil; Demian Marchione; Alex Rosu-Finsen; Mark Collings; Martin McCoustra

doi:10.1116/1.4716463

Laboratory investigations of irradiated acetonitrile-containing ices on an interstellar dust analog

Ali Abdulgalil, Demian Marchione, Alex Rosu-Finsen, Mark Collings, Martin McCoustra

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7 Citations (Scopus)

Abstract

Reflection-absorption infrared spectroscopy is used to study the impact of low-energy electron irradiation of acetonitrile-containing ices, under conditions close to those in the dense star-forming regions in the interstellar medium. Both the incident electron energy and the surface coverage were varied. The experiments reveal that solid acetonitrile is desorbed from its ultrathin solid films with a cross section of the order of 10(-17) cm(2). Evidence is presented for a significantly larger desorption cross section for acetonitrile molecules at the water-ice interface, similar to that previously observed for the benzene-water system.

Original language	English
Article number	041505
Journal	Journal of Vacuum Science and Technology A
Volume	30
Issue number	4
DOIs	https://doi.org/10.1116/1.4716463
Publication status	Published - Jul 2012

Keywords

Amino-acids
Methyl Cyanide
Radio-emission
Comet-Kohoutek
Films
Desorption
Surfaces
Benzene
Pt(111)
HCN

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title = "Laboratory investigations of irradiated acetonitrile-containing ices on an interstellar dust analog",

abstract = "Reflection-absorption infrared spectroscopy is used to study the impact of low-energy electron irradiation of acetonitrile-containing ices, under conditions close to those in the dense star-forming regions in the interstellar medium. Both the incident electron energy and the surface coverage were varied. The experiments reveal that solid acetonitrile is desorbed from its ultrathin solid films with a cross section of the order of 10(-17) cm(2). Evidence is presented for a significantly larger desorption cross section for acetonitrile molecules at the water-ice interface, similar to that previously observed for the benzene-water system. ",

keywords = "Amino-acids, Methyl Cyanide, Radio-emission, Comet-Kohoutek, Films, Desorption, Surfaces, Benzene, Pt(111), HCN ",

author = "Ali Abdulgalil and Demian Marchione and Alex Rosu-Finsen and Mark Collings and Martin McCoustra",

year = "2012",

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journal = "Journal of Vacuum Science and Technology A",

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T1 - Laboratory investigations of irradiated acetonitrile-containing ices on an interstellar dust analog

AU - Abdulgalil, Ali

AU - Marchione, Demian

AU - Rosu-Finsen, Alex

AU - Collings, Mark

AU - McCoustra, Martin

PY - 2012/7

Y1 - 2012/7

N2 - Reflection-absorption infrared spectroscopy is used to study the impact of low-energy electron irradiation of acetonitrile-containing ices, under conditions close to those in the dense star-forming regions in the interstellar medium. Both the incident electron energy and the surface coverage were varied. The experiments reveal that solid acetonitrile is desorbed from its ultrathin solid films with a cross section of the order of 10(-17) cm(2). Evidence is presented for a significantly larger desorption cross section for acetonitrile molecules at the water-ice interface, similar to that previously observed for the benzene-water system.

AB - Reflection-absorption infrared spectroscopy is used to study the impact of low-energy electron irradiation of acetonitrile-containing ices, under conditions close to those in the dense star-forming regions in the interstellar medium. Both the incident electron energy and the surface coverage were varied. The experiments reveal that solid acetonitrile is desorbed from its ultrathin solid films with a cross section of the order of 10(-17) cm(2). Evidence is presented for a significantly larger desorption cross section for acetonitrile molecules at the water-ice interface, similar to that previously observed for the benzene-water system.

KW - Amino-acids

KW - Methyl Cyanide

KW - Radio-emission

KW - Comet-Kohoutek

KW - Films

KW - Desorption

KW - Surfaces

KW - Benzene

KW - Pt(111)

KW - HCN

U2 - 10.1116/1.4716463

DO - 10.1116/1.4716463

M3 - Article

SN - 0734-2101

VL - 30

JO - Journal of Vacuum Science and Technology A

JF - Journal of Vacuum Science and Technology A

IS - 4

M1 - 041505

ER -

Laboratory investigations of irradiated acetonitrile-containing ices on an interstellar dust analog

Abstract

Keywords

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