Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles

Andrew M. Cassidy; Alexander Rosu-Finsen; Jerome Lasne; Martin R. S. McCoustra; David Field

doi:10.1017/S1743921319009281

Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles

Andrew M. Cassidy, Alexander Rosu-Finsen, Jerome Lasne, Martin R. S. McCoustra, David Field

Research output: Contribution to conference › Paper › peer-review

Abstract

We propose a role for CO ice mantles in ion recombination reactions, and demonstrate how the subsequent fall in the degree of gas phase ionization decreases the time required for cloud collapse under gravity by a factor of 5-6. Experimental results demonstrate that CO films prepared at cryo-temperatures spontaneously harbour electric fields immediately upon growth. Using what is known from observations about prestellar cloud conditions in the ISM, we explain how this phenomenon can lead to an acceleration in ion recombination reaction rates. The result is a pathway for cloud collapse to occur before cloud disruption by supernova remnants.

Original language	English
Pages	390-391
Number of pages	2
DOIs	https://doi.org/10.1017/S1743921319009281
Publication status	Published - Apr 2019
Event	IAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation - Cambridge, United Kingdom Duration: 14 Apr 2019 → 19 Jul 2019 https://www.iau.org/science/meetings/past/symposia/2315/

Conference

Conference	IAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation
Country/Territory	United Kingdom
City	Cambridge
Period	14/04/19 → 19/07/19
Internet address	https://www.iau.org/science/meetings/past/symposia/2315/

Keywords

ISM: Clouds
ISM: Magnetic fields
molecular processes

ASJC Scopus subject areas

Medicine (miscellaneous)
Astronomy and Astrophysics
Nutrition and Dietetics
Public Health, Environmental and Occupational Health
Space and Planetary Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1017/S1743921319009281

Cite this

Cassidy, A. M., Rosu-Finsen, A., Lasne, J., McCoustra, M. R. S., & Field, D. (2019). Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles. 390-391. Paper presented at IAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation, Cambridge, United Kingdom. https://doi.org/10.1017/S1743921319009281

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title = "Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles",

abstract = "We propose a role for CO ice mantles in ion recombination reactions, and demonstrate how the subsequent fall in the degree of gas phase ionization decreases the time required for cloud collapse under gravity by a factor of 5-6. Experimental results demonstrate that CO films prepared at cryo-temperatures spontaneously harbour electric fields immediately upon growth. Using what is known from observations about prestellar cloud conditions in the ISM, we explain how this phenomenon can lead to an acceleration in ion recombination reaction rates. The result is a pathway for cloud collapse to occur before cloud disruption by supernova remnants.",

keywords = "ISM: Clouds, ISM: Magnetic fields, molecular processes",

author = "Cassidy, {Andrew M.} and Alexander Rosu-Finsen and Jerome Lasne and McCoustra, {Martin R. S.} and David Field",

year = "2019",

month = apr,

doi = "10.1017/S1743921319009281",

language = "English",

pages = "390--391",

note = "IAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation ; Conference date: 14-04-2019 Through 19-07-2019",

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Cassidy, AM, Rosu-Finsen, A, Lasne, J, McCoustra, MRS & Field, D 2019, 'Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles', Paper presented at IAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation, Cambridge, United Kingdom, 14/04/19 - 19/07/19 pp. 390-391. https://doi.org/10.1017/S1743921319009281

Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles. / Cassidy, Andrew M.; Rosu-Finsen, Alexander; Lasne, Jerome et al.
2019. 390-391 Paper presented at IAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation, Cambridge, United Kingdom.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles

AU - Cassidy, Andrew M.

AU - Rosu-Finsen, Alexander

AU - Lasne, Jerome

AU - McCoustra, Martin R. S.

AU - Field, David

PY - 2019/4

Y1 - 2019/4

N2 - We propose a role for CO ice mantles in ion recombination reactions, and demonstrate how the subsequent fall in the degree of gas phase ionization decreases the time required for cloud collapse under gravity by a factor of 5-6. Experimental results demonstrate that CO films prepared at cryo-temperatures spontaneously harbour electric fields immediately upon growth. Using what is known from observations about prestellar cloud conditions in the ISM, we explain how this phenomenon can lead to an acceleration in ion recombination reaction rates. The result is a pathway for cloud collapse to occur before cloud disruption by supernova remnants.

AB - We propose a role for CO ice mantles in ion recombination reactions, and demonstrate how the subsequent fall in the degree of gas phase ionization decreases the time required for cloud collapse under gravity by a factor of 5-6. Experimental results demonstrate that CO films prepared at cryo-temperatures spontaneously harbour electric fields immediately upon growth. Using what is known from observations about prestellar cloud conditions in the ISM, we explain how this phenomenon can lead to an acceleration in ion recombination reaction rates. The result is a pathway for cloud collapse to occur before cloud disruption by supernova remnants.

KW - ISM: Clouds

KW - ISM: Magnetic fields

KW - molecular processes

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U2 - 10.1017/S1743921319009281

DO - 10.1017/S1743921319009281

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T2 - IAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation

Y2 - 14 April 2019 through 19 July 2019

ER -

Acceleration of Ion Recombination Reaction Rates in Cold Dark Clouds Through Spontaneous Polarization Charge On CO Ice Mantles

Abstract

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

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