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Time-resolving the ultrafast H₂ roaming chemistry and H₃⁺ formation using extreme-ultraviolet pulses

Chemistry

Time-resolving the ultrafast H₂ roaming chemistry and H₃⁺ formation using extreme-ultraviolet pulses

E. Livshits, I. Luzon, et al.

Discover the groundbreaking findings from researchers Ester Livshits, Itamar Luzon, Krishnendu Gope, Roi Baer, and Daniel Strasser as they reveal the rapid formation of the trihydrogen cation (H₃⁺) in methanol double ionization processes, occurring in just 100 fs! Delve into the intriguing dynamics that determine whether we see H⁺ or H₂⁺ fragments in this essential study of interstellar chemistry.

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Playback language: English
Abstract
The formation mechanisms and timescales of trihydrogen cation (H₃⁺) products in organic molecule ionization processes remain unclear, despite their importance in interstellar medium chemistry. This study uses ultrafast extreme-ultraviolet (EUV) pump and time-resolved near-IR probe techniques, along with ab initio molecular dynamics calculations, to show that H₃⁺ formation in methanol double ionization occurs within 100 fs. The research suggests that competition between proton and long-range electron transfer processes determines whether roaming neutral H₂ dynamics lead to H⁺ or H₂⁺ fragments.
Publisher
Communications Chemistry
Published On
Apr 21, 2020
Authors
Ester Livshits, Itamar Luzon, Krishnendu Gope, Roi Baer, Daniel Strasser
Tags
trihydrogen cation
H₃⁺ formation
methanol double ionization
ultrafast extreme-ultraviolet
proton transfer
electron transfer
interstellar chemistry

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