Rate enhancement in collisions of sulfuric acid molecules due to long-range intermolecular forces

Halonen, Roope; Zapadinsky, Evgeni; Kurtén, Theo; Vehkamäki, Hanna; Reischl, Bernhard

doi:https://doi.org/10.5194/acp-19-13355-2019

Articles | Volume 19, issue 21

https://doi.org/10.5194/acp-19-13355-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-13355-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 21

Research article

|

30 Oct 2019

Research article |

| 30 Oct 2019

Rate enhancement in collisions of sulfuric acid molecules due to long-range intermolecular forces

Roope Halonen, Evgeni Zapadinsky, Theo Kurtén, Hanna Vehkamäki, and Bernhard Reischl

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Final revised paper (published on 30 Oct 2019)
Preprint (discussion started on 11 Jun 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Referee Report for acp-2019-400', Anonymous Referee #1, 23 Jun 2019
RC2: 'Promising treatment of collision coefficients in new particle formation rates', Anonymous Referee #2, 10 Jul 2019
AC1: 'Response to referee 1', Roope Halonen, 05 Sep 2019
AC2: 'Response to referee 2', Roope Halonen, 05 Sep 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Roope Halonen on behalf of the Authors (30 Sep 2019) Author's response Manuscript

ED: Publish as is (07 Oct 2019) by Fangqun Yu

AR by Roope Halonen on behalf of the Authors (07 Oct 2019) Manuscript

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Short summary

The rate of collisions between molecules or clusters is used to determine particle formation in the atmosphere. The basic approach is to treat the colliding particles as noninteracting hard spheres. By using atomistic simulations with a realistic force field and theoretical approaches, we showed that the actual collision rate of two sulfuric acid molecules is more than twice as high as that for hard spheres. The results of this study will improve models of atmospheric particle growth.