D
David H. Parker
Researcher at Radboud University Nijmegen
Publications - 211
Citations - 8036
David H. Parker is an academic researcher from Radboud University Nijmegen. The author has contributed to research in topics: Excited state & Photodissociation. The author has an hindex of 38, co-authored 211 publications receiving 7554 citations. Previous affiliations of David H. Parker include Novosibirsk State University & University of California, Santa Cruz.
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Journal ArticleDOI
Velocity map imaging of ions and electrons using electrostatic lenses: Application in photoelectron and photofragment ion imaging of molecular oxygen
TL;DR: In this paper, the photodissociation processes occurring in molecular oxygen following the two-photon 3dπ(3Σ1g −) Rydberg excitation around 225 nm are presented to show the improvement in spatial resolution in the ion and electron images.
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Imaging the dynamics of gas phase reactions
Michael N. R. Ashfold,N. Hendrik Nahler,Andrew J. Orr-Ewing,Olivier P. J. Vieuxmaire,Rachel L. Toomes,Theofanis N. Kitsopoulos,Ivan Anton Garcia,Dmitri A. Chestakov,Shiou-Min Wu,David H. Parker +9 more
TL;DR: The evolution of the Ion imaging technique is traced, some of the more important breakthroughs with regards to improving image resolution and in image processing and analysis methods are highlighted, and the many applications to which the technique is now being applied are illustrated.
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Oriented Molecule Beams Via the Electrostatic Hexapole: Preparation, Characterization, and Reactive Scattering
TL;DR: The steric effect is one of the oldest and most intuitive concepts in chemical kinetics, yet our quantitative understanding of it has been quite limited as mentioned in this paper ; however, measuring the reactivability for specific collision geometries, i.e. selected impact parameters and reagents' mutual orientation in an elementary reaction, appeared to be impossible.
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Photoelectron and photofragment velocity map imaging of state-selected molecular oxygen dissociation/ionization dynamics
TL;DR: In this article, the authors presented a method for mapping all particles with the same initial velocity vector onto the same point on a 2D detector, irrespective of their position of creation in the ionization volume.
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Methyl iodide A-band decomposition study by photofragment velocity imaging
TL;DR: In this paper, the state-specific speed and angular distribution of the nascent fragments were recorded using (2+1) resonanceenhanced multi-photon ionization (REMPI) and velocity imaging, a new variant of ion imaging.