State-resolved studies of CO2 sticking to CO2 ice

Internal vibrations may affect the adsorption, scattering, and reactions of molecules impinging onto a surface. The energy of the ν3 antisymmetric stretch vibration of CO2 slightly exceeds the desorption energy of CO2 bound to CO2 ice. We use supersonic molecular beam techniques and rovibrationally...

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Main Authors: Charlotte Jansen, Ludo B. F. Juurlink
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-08-01
Series:Frontiers in Chemistry
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fchem.2023.1250711/full
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author Charlotte Jansen
Ludo B. F. Juurlink
author_facet Charlotte Jansen
Ludo B. F. Juurlink
author_sort Charlotte Jansen
collection DOAJ
description Internal vibrations may affect the adsorption, scattering, and reactions of molecules impinging onto a surface. The energy of the ν3 antisymmetric stretch vibration of CO2 slightly exceeds the desorption energy of CO2 bound to CO2 ice. We use supersonic molecular beam techniques and rovibrationally state-resolved excitation to determine whether this vibration affects condensation of gas phase CO2 to its ice. We detect sticking and CO2 ice formation using RAIRS and quantify the sticking probability using the King and Wells method with modulation of the vibrational excitation and Fourier transform based detection. We find that the influence of this vibration on the structure of the formed ice and on the sticking probability is negligible under our conditions. Based on our detection limit, we quantify the weighted average sticking probability at approximately 0.9 and the difference between the state-resolved and weighted average sticking probability as below 0.5%.
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spelling doaj.art-3ccf205189a4430e8db93e840f41f0c42024-01-17T16:00:43ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462023-08-011110.3389/fchem.2023.12507111250711State-resolved studies of CO2 sticking to CO2 iceCharlotte JansenLudo B. F. JuurlinkInternal vibrations may affect the adsorption, scattering, and reactions of molecules impinging onto a surface. The energy of the ν3 antisymmetric stretch vibration of CO2 slightly exceeds the desorption energy of CO2 bound to CO2 ice. We use supersonic molecular beam techniques and rovibrationally state-resolved excitation to determine whether this vibration affects condensation of gas phase CO2 to its ice. We detect sticking and CO2 ice formation using RAIRS and quantify the sticking probability using the King and Wells method with modulation of the vibrational excitation and Fourier transform based detection. We find that the influence of this vibration on the structure of the formed ice and on the sticking probability is negligible under our conditions. Based on our detection limit, we quantify the weighted average sticking probability at approximately 0.9 and the difference between the state-resolved and weighted average sticking probability as below 0.5%.https://www.frontiersin.org/articles/10.3389/fchem.2023.1250711/fullCO2nu3state resolvedmolecular beamcondensation
spellingShingle Charlotte Jansen
Ludo B. F. Juurlink
State-resolved studies of CO2 sticking to CO2 ice
Frontiers in Chemistry
CO2
nu3
state resolved
molecular beam
condensation
title State-resolved studies of CO2 sticking to CO2 ice
title_full State-resolved studies of CO2 sticking to CO2 ice
title_fullStr State-resolved studies of CO2 sticking to CO2 ice
title_full_unstemmed State-resolved studies of CO2 sticking to CO2 ice
title_short State-resolved studies of CO2 sticking to CO2 ice
title_sort state resolved studies of co2 sticking to co2 ice
topic CO2
nu3
state resolved
molecular beam
condensation
url https://www.frontiersin.org/articles/10.3389/fchem.2023.1250711/full
work_keys_str_mv AT charlottejansen stateresolvedstudiesofco2stickingtoco2ice
AT ludobfjuurlink stateresolvedstudiesofco2stickingtoco2ice