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 “"photoelectron angular distributions"”.
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Molecular Electronic Structure via Photoelectron Imaging Spectroscopy
This dissertation explores the use of photoelectron imaging spectrometry to probe the molecular electronic structure of various chemical systems, with an emphasis on photoelectron angular distributions. Experimental ion generation, mass selection, laser photodetachment, and photoelectron ion …
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Exploring the Chemistry of Methoxide with Oxygen through Photoelectron Imaging Spectroscopy
In this dissertation, photoelectron imaging spectroscopy is employed to probe the gas-phase chemistry between methoxide (CH3O) and oxygen, including evidence of previously unexplored reaction paths and providing further insight into the fundamentals of chemical bonding. First, the known reaction …
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Dipole moment effects in photodetachment from cluster anions
… outgoing electron is studied by comparing the photoelectron angular distributions: PADs) for I<super>−</super>·(Y)<sub><italic>n</italic></sub> and I<super>−</super> photodetachment. The results show strong dipole moment effects in the vicinity of direct detachment thresholds …
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Development and Construction of a new Photoelectron Imaging Spectrometer for Studying the Spectroscopy and Ultrafast Dynamics of Molecular Anions
… time-of-flight mass spectrometer; and a compact photoelectron imaging arrangement for anions, which negates the use of pulsed high voltages. We use this instrument in conjunction with a femtosecond laser system to perform the first ultrafast time-resolved photoelectron imaging experiments on …
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Studies in the electronic structure of matter
… for extracting atomic pseudo-potentials from photoelectron angular distributions is described and applied photoionization of the outermost p shells of Ar, Kr, and Xe and to the 4d shell of Xe. The pseudopotentials obtained reproduce the data, and also predict accurate cross sections and phase …
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Photoinitiated Dynamics of Cluster Anions via Photoelectron Imaging and Photofragment Mass Spectrometry
… these competing processes by means of photoelectron imaging spectroscopy combined with tandem time-of-flight (TOF) mass spectrometry. Photoelectron images are reported for members of the [(CO2)n(H2O)m]- cluster series. For homogeneous solvation, the photodetachment bands show evidence …
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Photodetachment Studies of Atomic Negative Ions Through Velocity-Map Imaging Spectroscopy
… photon wavelength of 532 nm. Measurements of the photoelectron angular distributions and asymmetry parameters for Ge- and Sn- were benchmarked against those measured previously [W. W. Williams, D. L. Carpenter, A. M. Covington, and J. S. Thompson, Phys. Rev. A 59, 4368 (1999), V. T. Davis, J. …
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Methyl Halide Cluster Anion Photoelectron Spectra and Angular Distributions as a Probe of Electron-Molecule Interactions
… &ndash molecule interactions, manifested in the photoelectron spectra and angular distributions, are elucidated through comparison to photodetachment data from the unsolvated atomic anion in question. Results are presented from number of monosolvated anion studies, including …
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Vibrational and anion photoelectron spectroscopy of transition metal clusters
… anion (TaN−). The data is obtained 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 …