Acceleration of ion recombination reaction rates in cold dark clouds through spontaneous polarization charge on CO ice mantles

Andrew Cassidy; Alexander Rosu-Finsen; Jérôme 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 Cassidy, Alexander Rosu-Finsen, Jérôme Lasne, Martin R. S. McCoustra, David Field

Institut for Fysik og Astronomi

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Konferenceabstrakt i tidsskrift › Forskning › 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.

Originalsprog	Engelsk
Tidsskrift	Proceedings of the International Astronomical Union
Vol/bind	15
Nummer	S350
Sider (fra-til)	390-391
Antal sider	2
ISSN	1743-9213
DOI	https://doi.org/10.1017/S1743921319009281
Status	Udgivet - 2020

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10.1017/S1743921319009281

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Acceleration of ion recombination reaction rates in cold dark clouds through spontaneous polarization charge on CO ice mantles. / Cassidy, Andrew; Rosu-Finsen, Alexander; Lasne, Jérôme et al.
I: Proceedings of the International Astronomical Union, Bind 15, Nr. S350, 2020, s. 390-391.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Konferenceabstrakt i tidsskrift › Forskning › peer review

TY - ABST

T1 - Acceleration of ion recombination reaction rates in cold dark clouds through spontaneous polarization charge on CO ice mantles

AU - Cassidy, Andrew

AU - Rosu-Finsen, Alexander

AU - Lasne, Jérôme

AU - McCoustra, Martin R. S.

AU - Field, David

PY - 2020

Y1 - 2020

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 - Star formation, spontelectrics

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U2 - 10.1017/S1743921319009281

DO - 10.1017/S1743921319009281

M3 - Conference abstract in journal

SN - 1743-9213

VL - 15

SP - 390

EP - 391

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - S350

ER -

Acceleration of ion recombination reaction rates in cold dark clouds through spontaneous polarization charge on CO ice mantles

Abstract

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