THE INFRARED SPECTRA OF THICK FILMS OF CO2 AND CO2+H2O AT LOW TEMPERATURES

Abstract

High resolution infrared absorption studies on thick films of CO2 and of dilute solid solutions of H2O in CO2 have been made at 53 and 4 K. A spectroscopically observable complex between CO2 and H2O is not formed. The isolation of H2O in the CO2 matrix at 53 K is quite good. Monomer and dimer absorptions have been assigned in the 1/1600 to 1/1650 cm region. In very thick films of pure CO2 nu(1) appears, weakly, at 53 K. In samples deposited at 4 K the nu(1) absorption is markedly intensified, probably because of an increased number of crystal imperfections, and 2nu(2) is also observed. Similar systems of lattice vibrations have been observed in combination with both nu(2) and nu(3). (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1961
Accession Number
AD0256499

Entities

People

  • Dolphus E. Milligan
  • Marilyn E. Jacox

Tags

DTIC Thesaurus Topics

  • Absorption
  • Crystal Lattice Vibrations
  • Crystal Lattices
  • Diffraction
  • Electromagnetic Spectra
  • Films
  • High Resolution
  • Infrared Spectra
  • Low Temperature
  • Solid Solutions
  • Spectra
  • Thick Films
  • Vibration

Readers

  • Nanofabrication and Microfabrication.
  • Organic Chemistry
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.