RESEARCH ACTIVITIES VI
Department of Vacuum UV Photoscience

A. Electronic Structure and Decay Mechanism of Inner-Shell Excited Molecules

  1. Angular Distribution of the Fragment Ions Following the S 1s Photoexcitations of OCS
  2. Angular Distribution of the Fragment Ions following the S 1s Photoexcitations of CS2
  3. Vibronic Couplings in the C 1s -> ns (sigma)g Rydberg Excited States of CO2
  4. Fixed-Molecule 1s(sigma)g,u Photoelectron Angular Distributions as a Probe of (sigma)g* and (sigma)u* Shape Resonances of CO2
  5. Soft X-ray Absorption and X-ray Photoelectron Spectroscopic Study of Tautomerism in Intramolecular Hydrogen Bonds of N-Salicylideneaniline Derivatives

B. Soft X-ray Photoelectron-Photoabsorption Spectroscopy and Electronic Structure of Transition Metal Compounds

  1. Polarization Dependence of Ni 2p Photoabsorption of K2Ni(CN)2-H2O
  2. Polarization Dependence of Ni 2p Photoabsorption of Ni Dimethyl-glyoxime
  3. Resonant Behavior in Ni 3d, 3p and 3s Photoelectron Spectra at the Ni 2p Excitation of Planar Molecular Complex Ni(Hdmg)2

C. Studies on Primary Photochemical/physical Processes using Femtosecond Time-Resolved Electronic Spectroscopy

  1. Observation of Dimer Excited-State Dynamics in the Double Proton Transfer Reaction of 7-Azaindole by Femtosecond Fluorescence Up-Conversion
  2. Construction of a Femtosecond UV-VIS-NIR Transient Absorption Spectrometer
  3. Construction of a Flow System of Supercritical Fluids for Ultrafast Spectroscopy
  4. Femtosecond Time-Resolved Fluorescence Measurements of Coumarin153 in Supercritical Fluids

D. Studies on Photochemical Reactions using Picosecond Time-Resolved Vibrational Spectroscopy

  1. Construction of a Picosecond Time-Resolved Raman Spectrometer
  2. Observation of the Picosecond Dynamics of Photoexcited all-trans Retinal by Time-Resolved Spontaneous Raman Spectroscopy

E. Development of Time-Resolved Spectroscopy using Synchrotron Radiation

  1. Construction of a Setup for Subnanosecond Time-Resolved Far-Infrared Measurement using Synchrotron Radiation

F. Synchrotron Radiation Stimulated Surface Reactions

  1. Potential of Site Specific Photo-chemical Processing Using Synchrotron Radiation
  2. Structural Changes of Silicon Dioxide Films Caused by Synchrotron Irradiation
  3. Extremely High Quantum Yield of Thin Film Deposition Reaction by Core Electron Excitations
  4. Growth Mechanisms in the Synchrotron Radiation-Assisted Silicon Gas Source Molecular Beam Epitaxy Using Disilane
  5. Infrared Reflection Absorption Spectrum of Silicon Deuterides on Si(100) Surface
  6. Chemisorption of Deuterium on Ultrathin Ge Film Deposited over Si(100)-2x1: Existence of Dideuteride Phase
  7. Design and Performance of a Multilayered Mirror Monochromator in the Low Energy Region of Vacuum Ultra Violet
  8. Double MultiLayered Mirror Monochromator Beamline BL-4A1 for Synchrotron Radiation Stimulated Processing Study

G. Ion Desorption Induced by Core-Electron Transitions Studied by Electron-Ion Coincidence Spectroscopy Combined with Synchrotron Radiation

  1. Study of Ion Desorption Induced by a Resonant Core-Electron Transition of Condensed H2O by Using Auger Electron Photo-Ion Coincidence (AEPICO) Spectroscopy Combined with Synchrotron Radiation
  2. Study of Ion Desorption Induced by a Resonant Core-Electron Transition of Condensed NH3 Using Auger Electron Photo-Ion Coincidence (AEPICO) Spectroscopy Combined with Synchrotron Radiation
  3. Photon Stimulated Ion Desorption of Condensed Acetonitrile Induced by Carbon Core Excitation

H. Photoionization Dynamics Studied by Electron Spectroscopy Combined with a Continuous Synchrotron Radiation Source

  1. Two-Dimensional Photoelectron Spectroscopy of Acetylene: Rydberg-Valence Interaction between the (3(sigma)g)-1(3p(sigma)u)1 and (3(sigma)g)-1 (3(sigma)u)1 States
  2. Superexcited States of OCS Probed by Using Photoelectron Spectroscopy for Autoionizing Atomic Sulfur
  3. Branching Ratios from a Rydberg State Converging to OCS+(B2(SIGMA)+) to Probable Decay Pathways

I. Vacuum UV Spectroscopy Making Use of the Combination of Synchrotron Radiation and a Mode-Locked UV Laser

  1. Development of a Tunable UV Laser System Synchronizing Precisely with Synchrotron Radiation Pulses from UVSOR
  2. Apparatus for Laser Induced Fluorescence Spectroscopy of Ions or Neutral Fragments Prepared by VUV Photoexcitation
  3. Laser Induced Fluorescence Excitation Spectroscopy of N2+ Produced by Photoionization of N2 and N2O with Synchrotron Radiation
  4. Time-Resolved Fluorescence Spectroscopy of the Products Resulting from VUV Excitation by Using a Streak Camera

J. Rebuilding the Monochromator on Beamline BL2B2 in UVSOR

  1. Design of an 18 m Spherical Grating Monochromator at UVSOR

K. Absolute Photoabsorption Cross Section and Radiative Dissociation of Polyatomic Molecule Excited at Valence Shell

  1. C6F5X (X = H, F, Cl, Br, and I) Radical Cation Formation in the 10-40 eV Region
  2. Photodissociation Spectroscopy of Some Small Nitriles in the Vacuum Ultraviolet Region
  3. Photoabsorption and Fluorescence Cross Sections of SiCl4 in the Region of 6.2-31 eV
  4. Dissociative Excitation Cross Section of Formic Acid in the 105 - 155 nm Region

L. Creation of High-Sensitive Photorefractive Glasses and Photoinduced Structural Changes

  1. Preparation of Bragg Gratings in Sputter-Deposited GeO2-SiO2 Glasses by Excimer-Laser Irradiation
  2. Defect Formation in SiO2:GeO2 Glasses Studied by Irradiation with Excimer Laser Light

M. Creation of Amorphous Metallic Conducting Amorphous Oxides

  1. Working Hypothesis to Explore Novel Wide Band Gap Electrically Conducting Amorphous Oxides and Examples
  2. Novel Oxide Amorphous Semi-conductors: Transparent Conducting Amorphous Oxides

N. Ultraviolet Photoelectron Spectroscopy of Organic and Inorganic Solids

  1. Angle-Resolved UPS of Ultrathin Films of Functional Organic Molecules with Synchrotron Radiation: Determination of Molecular Orientation by Quantitative Analysis of Photoelectron Angular Distribution
  2. Angle-Resolved Ultraviolet Photo-electron Spectroscopy of Thin Films of Bis(1,2,5 Thiadiazolo)-p-Quinobis (1,3-Dithiole) on the MoS2 Surface3 Ultraviolet Photoelectron Spectroscopy of N-Type Conducting Polymers
  3. Ultraviolet Photoelectron Spectroscopy of N-Type Conducting Polymers
  4. Photoelectron Spectra of Metallo-fullerenes, GdC82 and La2C80: Electron Transfer from Metal to the Cag
  5. Structure and Catalysis of LixNi2-xO2 Oxide Systems for Oxidative Coupling of Methane
  6. Resonant Photoemission Study of Ladder Compound Sr14Cu24O41

O. Desorption Induced by Electronic Transitions from Cryogenic Surfaces

  1. Excitonic Energy Transfer Process in Ne-Kr Alloy Studied by Photon Stimulated Desorption of Metastable Atoms
  2. Absolute Desorption Yield of Meta-stable Atoms from the Surface of Solid Rare Gases Induced by Exciton Creation
  3. Long Lifetime Emission of the Excited Species Ejected from the Surface of Solid Ne

P. Structure and Vibrational Spectra of Molecules Physisorbed on Metal Surfaces

  1. Upgraded Infrared Beamline BL6A1 at UVSOR
  2. Development of the Cryogenic Sample Holder for Low Energy Electron Diffraction and Electron Energy Loss Spectroscopy
  3. Structure of the NO Molecule on the Pt(111) Surface at Low Temperature

Q. Electronic Structures of Functional Organic Materials Studied by Spectroscopies Using Synchrotron Radiation

  1. Energy Level Alignment at Organic /Metal Interfaces Studied by UV Photoemission: Breakdown of Traditional Assumption of a Common Vacuum Level at the Interface
  2. Electronic Structures Of Polysilanes And Related Compounds
  3. Polarized VUV Absorption and Reflection Spectra of Oriented Films of Poly-(tetrafluoroethylene) (CF2)n and its Model Compound
  4. Soft X-ray Absorption and X-ray Photoelectron Spectroscopic Study of Tautomerism in Intramolecular Hydrogen Bonds of N-Salicylideneaniline Derivatives

R. Growth and Characterization of InAs Nanometer-Scale Island on InP (001) Substrate

  1. Formation of InAs Islands on InP (001) by Droplet Hetero-Epitaxy
  2. InAs Dots Grown on InP (001) by Droplet Hetero-Epitaxy Using OMVPE

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