Water dimer (H2O)2 -- a vital component of the earth's atmosphere -- is an important prototypical hydrogen-bonded system. It provides direct insight into fundamental chemical and biochemical processes, e.g., proton transfer and ionic supramolecular dynamics occurring in astro- and atmospheric chemistry. Exploiting a purified molecular beam of water dimer and multi-mass ion imaging, we report the simultaneous detection of all generated ion products of (H2O)2+-fragmentation following single ionization. Detailed information about ion yields and reaction energetics of 13 ion-radical pathways, 6 of which are new, of (H2O)2+ are presented, including strong 18O-isotope effects.
@article{arxiv.2308.08006,
title = {Reaction Pathways of Water Dimer Following Single Ionization},
author = {Ivo S. Vinklárek and Hubertus Bromberger and Nidin Vadassery and Wuwei Jin and Jochen Küpper and Sebastian Trippel},
journal= {arXiv preprint arXiv:2308.08006},
year = {2024}
}