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 conferencePaper

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 languageEnglish
Pages390-391
Number of pages2
DOIs
Publication statusPublished - Apr 2019
EventIAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation - Cambridge, United Kingdom
Duration: 14 Apr 201919 Jul 2019
https://www.iau.org/science/meetings/past/symposia/2315/

Conference

ConferenceIAU Symposium 350 - Laboratory Astrophysics: From Observations to Interpretation
CountryUnited Kingdom
CityCambridge
Period14/04/1919/07/19
Internet address

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

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