Referenced in: none

Automatically associated channels: Kir2.3

Title: Novel geminate recombination channel after indirect photoionization of water.

Authors: Martin K Fischer, Hubert Rossmadl, Hristo Iglev

Journal, date & volume: J Chem Phys, 2011 Jun 7 , 134, 214507

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/21663367

Abstract
We studied the photolysis of neat protonated and heavy water using pump-probe and pump-repump-probe spectroscopy. A novel recombination channel is reported leading to ultrafast quenching (0.7 ± 0.1 ps) of almost one third of the initial number of photo-generated electrons. The efficiency and the recombination rate of this channel are lower in heavy water, 27 ± 5% and (0.9 ± 0.1 ps)(-1), respectively. Comparison with similar data measured after photodetachment of aqueous hydroxide provides evidence for the formation of short-lived OH:e(-) (OD:e(-)) pairs after indirect photoionization of water at 9.2 eV.