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Article Dans Une Revue Review of Scientific Instruments Année : 2021

A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures

Michael Capron
Abdessamad Benidar
Ludovic Biennier
André Canosa
Jonathan Courbe
G.A. Garcia
  • Fonction : Auteur
J.F. Gil
  • Fonction : Auteur
L. Nahon
  • Fonction : Auteur
Lucile Rutkowski
Ian R Sims
Jonathan Thiévin

Résumé

A new instrument dedicated to the kinetic study of low-temperature gas phase neutral-neutral reactions, including clustering processes, is presented. It combines a supersonic flow reactor with vacuum ultra-violet synchrotron photoionization time-of-flight mass spectrometry. A photoion-photoelectron coincidence detection scheme has been adopted to optimize the particle counting efficiency. The characteristics of the instrument are detailed along with its capabilities illustrated through a few results obtained at low temperatures (<100 K) including a photoionization spectrum of n-butane, the detection of formic acid dimer formation, and the observation of diacetylene molecules formed by the reaction between the C2H radical and C2H2. © 2021 Author(s).
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Dates et versions

hal-03195931 , version 1 (02-08-2021)

Identifiants

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Olivier Durif, Michael Capron, J.P. Messinger, Abdessamad Benidar, Ludovic Biennier, et al.. A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures. Review of Scientific Instruments, 2021, 92 (1), pp.014102. ⟨10.1063/5.0029991⟩. ⟨hal-03195931⟩
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