Aarhus University Seal / Aarhus Universitets segl

Søren Vrønning Hoffmann

VUV spectroscopy of an electron irradiated benzene:carbon dioxide interstellar ice analogue

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Standard

VUV spectroscopy of an electron irradiated benzene:carbon dioxide interstellar ice analogue. / James, Rachel L.; Jones, Nykola C.; Hoffmann, Søren Vrønning; Dawes, Anita.

I: RSC Advances, Bind 9, 2019, s. 5453-5459.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

APA

CBE

MLA

Vancouver

Author

Bibtex

@article{cb291e69dfed4380bb5945ea42e477f4,
title = "VUV spectroscopy of an electron irradiated benzene:carbon dioxide interstellar ice analogue",
abstract = "We present the first vacuum ultraviolet spectroscopic study of an interstellar ice analogue of a 1:100 benzene (C 6 H 6 ):carbon dioxide (CO 2 ) mixture which has been energetically processed with 1 keV electrons. We have exploited the fact that benzene has a relatively high photoabsorption cross section in the vacuum ultraviolet region to study this dilute mixture of benzene. Before irradiation with 1 keV electrons, we observed that the benzene electronic transition bands in the C 6 H 6 :CO 2 mixture exhibits a blueshift in band position towards energies observed in the gas-phase compared with that of pure, amorphous benzene and we have attributed this to a matrix isolation effect. After irradiation, a lowering in intensity of both the carbon dioxide and benzene electronic transition bands was observed, as well as the formation of the small irradiation product, carbon monoxide. A residue was obtained at 200 K which showed characteristic features of the benzene electronic transition of 1 E 1u ← 1 A 1g , but with additional structure suggesting the formation of a benzene derivative. ",
keywords = "ACIDS, DEUTERIUM ENRICHMENT, METEORITES, MOLECULES, MURCHISON, POLYCYCLIC AROMATIC-HYDROCARBONS",
author = "James, {Rachel L.} and Jones, {Nykola C.} and Hoffmann, {S{\o}ren Vr{\o}nning} and Anita Dawes",
year = "2019",
doi = "10.1039/c9ra00462a",
language = "English",
volume = "9",
pages = "5453--5459",
journal = "R S C Advances",
issn = "2046-2069",
publisher = "RSC Publishing",

}

RIS

TY - JOUR

T1 - VUV spectroscopy of an electron irradiated benzene:carbon dioxide interstellar ice analogue

AU - James, Rachel L.

AU - Jones, Nykola C.

AU - Hoffmann, Søren Vrønning

AU - Dawes, Anita

PY - 2019

Y1 - 2019

N2 - We present the first vacuum ultraviolet spectroscopic study of an interstellar ice analogue of a 1:100 benzene (C 6 H 6 ):carbon dioxide (CO 2 ) mixture which has been energetically processed with 1 keV electrons. We have exploited the fact that benzene has a relatively high photoabsorption cross section in the vacuum ultraviolet region to study this dilute mixture of benzene. Before irradiation with 1 keV electrons, we observed that the benzene electronic transition bands in the C 6 H 6 :CO 2 mixture exhibits a blueshift in band position towards energies observed in the gas-phase compared with that of pure, amorphous benzene and we have attributed this to a matrix isolation effect. After irradiation, a lowering in intensity of both the carbon dioxide and benzene electronic transition bands was observed, as well as the formation of the small irradiation product, carbon monoxide. A residue was obtained at 200 K which showed characteristic features of the benzene electronic transition of 1 E 1u ← 1 A 1g , but with additional structure suggesting the formation of a benzene derivative.

AB - We present the first vacuum ultraviolet spectroscopic study of an interstellar ice analogue of a 1:100 benzene (C 6 H 6 ):carbon dioxide (CO 2 ) mixture which has been energetically processed with 1 keV electrons. We have exploited the fact that benzene has a relatively high photoabsorption cross section in the vacuum ultraviolet region to study this dilute mixture of benzene. Before irradiation with 1 keV electrons, we observed that the benzene electronic transition bands in the C 6 H 6 :CO 2 mixture exhibits a blueshift in band position towards energies observed in the gas-phase compared with that of pure, amorphous benzene and we have attributed this to a matrix isolation effect. After irradiation, a lowering in intensity of both the carbon dioxide and benzene electronic transition bands was observed, as well as the formation of the small irradiation product, carbon monoxide. A residue was obtained at 200 K which showed characteristic features of the benzene electronic transition of 1 E 1u ← 1 A 1g , but with additional structure suggesting the formation of a benzene derivative.

KW - ACIDS

KW - DEUTERIUM ENRICHMENT

KW - METEORITES

KW - MOLECULES

KW - MURCHISON

KW - POLYCYCLIC AROMATIC-HYDROCARBONS

U2 - 10.1039/c9ra00462a

DO - 10.1039/c9ra00462a

M3 - Journal article

VL - 9

SP - 5453

EP - 5459

JO - R S C Advances

JF - R S C Advances

SN - 2046-2069

ER -