Zero Electron Kinetic Energy/Velocity Map Imaging (ZEKE/VMI) Spectroscopy of Negative Ions

Abstract

Construction of the slow photoelectron, velocity-map imaging (SEVI) instrument was completed and the first results were obtained, demonstrating the power of the technique in measuring high-resolution (approx. 0.5 meV) photodetachment spectra of negative ions. Work is continuing on improving the performance of this instrument, with particular focus on reducing stray magnetic fields in the detection region and modifying the ion source and mass spectrometer to achieve higher ion signal and stability.

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Document Details

Document Type
Technical Report
Publication Date
Sep 22, 2004
Accession Number
ADA431072

Entities

People

  • Daniel Neumark

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Chemical Kinetics
  • Data Acquisition
  • Dynamics
  • Electrons
  • Energy
  • High Resolution
  • Ions
  • Kinetic Energy
  • Mass Spectrometers
  • Molecular Dynamics
  • Photoelectron Spectra
  • Photoelectrons
  • Spectra
  • Spectroscopy
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Molecular Photonics/Laser Physics
  • Solar Physics

Technology Areas

  • Microelectronics