Excited-State Energetics and Dynamics of Large Molecules, Complexes and Clusters.

Abstract

New techniques for spectroscopy in supersonic expansions and in the development of specific supersonic sources were developed. Vacuum Ultraviolet Absorption Spectroscopy in Supersonic Expansions. We have combined the techniques the vacuum ultraviolet (VUV) spectroscopy together with planar supersonic jets, which allows for the interrogation of absorption spectra of large molecules cooled in supersonic expansions in the near VUV region. The experimental setup consists of a high pressure Xenon lamp, Calcium fluoride optics, a vacuum ultraviolet spectrograph and a nozzle slit (0.27x90 mm, repetition rate 9 Hz and gas pulse duration 300 Micro sec). The characteristics of this spectroscopic setup are: (i) Energy range 6-10 eV. (ii) Spectral resolution 0.1 angstroms. (iii) Routine measurements of high-energy absorption spectra. (iv) Interrogation of fluorescence excitation spectra of the parent molecule.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1985
Accession Number
ADA192754

Entities

People

  • Joshua Jortner
  • Uzi Even

Organizations

  • Tel Aviv University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Chemistry
  • Conical Nozzles
  • Couplings
  • Dye Lasers
  • Dynamics
  • Energy
  • Excitation
  • Fluorescence
  • High Energy
  • High Pressure
  • Laser Dyes
  • Measurement
  • Quantum Yields
  • Spectra
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Optical Physics and Photonics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flight
  • Hypersonics - Hypersonic Flow