Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Velocity Map Imaging"”.
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Photodetachment Studies of Atomic Negative Ions Through Velocity-Map Imaging Spectroscopy
The technique of velocity-map imaging (VMI) spectroscopy as been adapted to a keV-level negative ion beamline for studies of photon-negative ion collisions. The design and operation of the VMI spectrometer takes into consideration the use of continuous, fast-moving (5 keV to 10 keV) ion beams, as …
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Investigations of Ice Photodynamics: Molecular Dynamics Studies and an Apparatus for Solid Sample Velocity Map Imaging
… ice XI, and ice Ih. Additionally, results from a velocity map imaging apparatus, which has been augmented for the study of low temperature solid samples, are presented. Specifically, preliminary results for NO2:Ar photodissociation are shown. In the MD simulations, dynamics of the primary …
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Novel techniques for cold/ultracold molecular collisions
… the successful implementation of a slice velocity map imaging apparatus capable of performing molecular beam scattering experiments at collision energies from well above the room temperature to below 1 K. The novel techniques introduced here offers a platform to study collisions at a …
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Vibrational and anion photoelectron spectroscopy of transition metal clusters
… through anion photoelectron spectroscopy via velocity map imaging (VMI), which permits the simultaneous measurement of photoelectron spectra and photoelectron angular distributions (PADs). The study on TaN− reports the first photoelectron spectra of this diatomic molecule. The spectroscopic …
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Photoelectron Spectroscopy of highly oriented pyrolytic graphite using intense ultrashort laser pulses
… discussed. Finally a novel technique of velocity map imaging of photoemission from a surface has been demonstrated for the first time at the HOPG surface.
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Synchrotron radiation as a probe of chemical information using novel experimental configurations
… the ability of a novel use of a time of flight velocity map imaging apparatus to focus a zero energy ion event with mass information. In addition a demonstration of the resolution obtainable is shown, along with the ability to determine the components of a mixture of gases in the range of less …
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Electronic Spectroscopy, Photochemistry, And Reactivity Of Isoprene-Derived Criegee Intermediates
… potentials and prompt release of O 1D products. Velocity map imaging is used to determine the angular and velocity distributions of the O-atom products following UV-vis excitation of the isoprene-derived Criegee intermediates. UV-vis transient absorption spectroscopy permits study of the …
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Photoelectron Imaging of Iodide Centered Alkyl Halide Cluster Anions
<p>This dissertation presents results from cluster anion photodetachment experiments of the solvated iodide anion as a means of investigating electron molecule interaction. Due to the localization of the excess charge on the iodine atom, these experiments proceed analogously to electron scattering …
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Photoelectron circular dichroism of anionic chiral metal complexes and deprotonated molecules
… either linear or circular polarized light. Using velocity map imaging (VMI) photoelectron spectroscopy, the kinetic energy of the detached electron and its spatial distribution are recorded, providing insight into the energy-resolved PECD. Unfortunately, gold complexes do not reveal any PECD but …