Accession Number : ADA192755

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

Descriptive Note : Progress rept. no. 1, Feb-Apr 85,

Corporate Author : TEL-AVIV UNIV (ISRAEL) DEPT OF CHEMISTRY

Personal Author(s) : Jortner, Joshua ; Even, Uzi

PDF Url : ADA192755

Report Date : Apr 1985

Pagination or Media Count : 4

Abstract : Vacuum Ultraviolet Absorption Spectroscopy in Supersonic Expansions. We have combined the techniques of vacuum ultraviolet ((VUV) spectroscopy together with planar supersonic jets, which allows for the interrogation of absorption spectra of large molecule 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 Microsec). The characteristics of this spectroscopic setup are: (i) Energy range 6-20 eV. (ii) Spectral resolution 0.1 angstrum. (iii) Routine measurements of high-energy absorption spectra. (iv) Interrogation of fluorescence excitation spectra of the parent molecule or its photoproducts.

Descriptors :   *ABSORPTION SPECTRA, *DYNAMICS, *ENERGY LEVELS, *EXCITATION, *MOLECULES, CALCIUM FLUORIDES, ENERGETIC PROPERTIES, FLUORESCENCE, HIGH ENERGY, HIGH PRESSURE, JET AIRCRAFT, MEASUREMENT, OPTICS, PLANAR STRUCTURES, RADIATION ABSORPTION, REGIONS, SPECTRA, SPECTROGRAPHS, SPECTROSCOPY, SUPERSONIC AIRCRAFT, VACUUM ULTRAVIOLET RADIATION

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE