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Filtering by: Creator Yang, Wei Qiang Remove constraint Creator: Yang, Wei Qiang Academic Affiliation Chemistry Remove constraint Academic Affiliation: Chemistry

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  • Electron Diffraction of Neutral and Cationic Clusters Doped into Superfluid Helium Droplets

    Creator:
    Lei, Lei
    Abstract:
    In this dissertation, I describe the experimental investigation of electron diffraction of neutral and ionic clusters doped into superfluid helium droplets. The project is aimed at contributing to the development of an overall approach called ‘serial single molecule electron diffraction imaging (ss-EDI), a potential approach to solve macromolecule structures bypassing...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Wei Kong In this dissertation, I describe the experimental investigation of electron

  • Electron diffraction of molecules in superfluid helium droplets

    Creator:
    He, Yunteng
    Abstract:
    In this dissertation, I describe the experimental investigation in electron diffraction of molecules in superfluid helium droplets. The project is part of an overall scheme called ‘single molecule serial electron diffraction imaging’ (SS-EDI), with the ultimate goal of building an apparatus to determine atomic structures from oriented macromolecules. In SS-EDI,...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Wei Kong In this dissertation, I describe the experimental investigation in electron

  • Zero kinetic energy photoelectron spectroscopy of polycyclic aromatic hydrocarbons

    Creator:
    Zhang, Jie
    Abstract:
    In this dissertation, I present electronic spectra of a few polycyclic aromatic hydrocarbons (PAHs): tetracene, pentacene, pyrene, benzo[g,h,i]perylene and benzo[a]pyrene using resonantly enhanced multiphoton ionization (REMPI) and zero kinetic energy (ZEKE) photoelectron spectroscopy. The work of tetracene and pentacene also combine a laser desorption source with a ZEKE spectrometer, demonstrating...
    Resource Type:
    Dissertation
    Full Text:
    .; Semyonov, M. A. J. Appl. Spectrosc., 1995, 62, 482. (45) Qi, F.; Yang, R.; Yang, B.; Huang, C.; Wei, L

  • Catching Ions in Superfluid Helium Droplets

    Creator:
    Chen, Lei
    Abstract:
    In this dissertation, I describe the experimental investigation of catching ions in superfluid helium droplets. The ultimate goal of our project is to build a coherent electron diffraction apparatus for atomic structure determination from oriented single macromolecules. This involves generating protein ions from electrospray ionization (ESI) and doping them in...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Wei Kong In this dissertation, I describe the experimental investigation of catching

  • Threshold ionization spectroscopy of metal clusters and metal-ligand complexes

    Creator:
    Peng, Xianzhao
    Abstract:
    In this dissertation, we describe a spectroscopic study of metal clusters and metal-ligand complexes using pulsed field ionization zero kinetic energy (PFI-ZEKE) photoelectron spectroscopy and mass analyzed threshold ionization (MATI) spectroscopy. Vibrational resolved spectra of sodium dimer, Na•NH₃, Na•(NH₃)₂ are presented. These spectra provide a direct measurement of the ionization...
    Resource Type:
    Dissertation
    Full Text:
    Ionization Spectroscopy of Metal Clusters and Metal-Ligand Complexes. Abstract approved: Wei In this

  • Polarization spectroscopy and photodissociation studies of nitroaromatic compounds in the gas phase

    Creator:
    Abbott, James E.
    Abstract:
    The central purpose of this dissertation was to explore and expand the use of an uniform electric field for orientation and for subsequent spectroscopic investigation of asymmetric polar molecules in the gas phase. The systems of study were nitrobenzene (NB) and the nitrotoluene (NT) isomers. We were able to quantitatively...
    Resource Type:
    Dissertation
    Full Text:
    Wei Kong The central purpose of this dissertation was to explore and expand the use of an

  • Properties of Large Superfluid Helium Droplets

    Creator:
    Alghamdi, Maha
    Abstract:
    In this dissertation, I describe the experimental investigation of large superfluid helium droplets. The goal and direction of this thesis is to facilitate the use of these droplets as part of our project ss-EDI. The overall scheme of ss-EDI is to dope proteins inside helium droplets and collect a diffraction...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Wei Kong In this dissertation, I describe the experimental investigation of large

  • Electronic spectroscopy of biological relevant species and their complexes with solvent molecules

    Creator:
    He, Yonggang
    Abstract:
    In this dissertation, I present electronic spectroscopy of a few biologically relevant species and their complexes with solvent molecules in the gas phase using a variety of techniques, including resonantly enhanced multiphoton ionization (REMPI), laser induced fluorescence (LIF), and zero kinetic energy (ZEKE) photoelectron spectroscopy. My work on several methylated...
    Resource Type:
    Dissertation
    Full Text:
    Biological Relevant Species and their Complexes with Solvent Molecules. Abstract approved: Wei In this

  • Zero Kinetic Energy Photoelectron Spectroscopy of Polycyclic Aromatic Hydrocarbons

    Creator:
    Harthcock, Colin
    Abstract:
    In this dissertation, I describe spectroscopic studies of jet-cooled polycyclic aromatic hydrocarbons (PAH) and one nitrogen substituted PAH (PANH) using pulsed field zero kinetic energy (ZEKE) photoelectron spectroscopy and resonantly enhanced multiphoton ionization (REMPI) spectroscopy. Recently, there has been a demand for far-infrared (FIR) spectral information of astrophysically relevant molecules...
    Resource Type:
    Dissertation
    Full Text:
    , F.; Yang, R.; Yang, B.; Huang, C.; Wei, L.; Wang, J.; Sheng, L.; Zhang, Y. Isomeric identification

  • Coulomb Explosion in Moderately Intense Nanosecond Laser Fields

    Creator:
    Yao, Yuzhong
    Abstract:
    In this dissertation, I present experimental observations of multiply charged atomic ions (MCAI) generated from interactions of atomic/molecular clusters with moderately intense nanosecond laser pulses. This process is also known as Coulomb explosion (CE) and it has been extensively studied in intense laser fields using ultrashort pulses. Several prevailing theories...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Wei Kong In this dissertation, I present experimental observations of multiply