Metal Oxide Infrared Emission

Abstract

Chemiluminescence from a beam of group IIA metals traversing a scattering chamber filled with NO2 or N2O gas has been studied as a function of wavelength and pressure. The Ba + NO2 and the Ba, Sr, and Ca + N2O chemiluminescent reactions are first order in both reactants while Ca + NO2 and Sr + NO2 are quadratic in the NO2 pressure. Cross sections for beam attenuation were found. For the Ba + NO2 reaction, the chemiluminescence has been assigned to the BaO A singlet Sigma - X singlet Sigma band system. From the resolved rotational structure it is concluded that with higher v' excitation, the J' distribution is characterized by a lower rotational temperature. For certain reactions the chemiluminescence is weakly polarized. A model involving the partitioning of angular momentum between the rotation and recoil angular momenta of the products is proposed to account for the degree of polarization of the chemiluminescence.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1971
Accession Number
AD0732588

Entities

People

  • Richard Zare

Organizations

  • Columbia University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkaline Earth Metals
  • Angular Momentum
  • Chemical Kinetics
  • Chemical Reactions
  • Chemistry
  • Detection
  • Detectors
  • Diffusion Pumps
  • Dissociation
  • Ground State
  • Luminescence
  • Measurement
  • Metal Oxides
  • Momentum
  • New York
  • Spectra
  • Total Angular Momentum

Fields of Study

  • Chemistry

Readers

  • Molecular Photonics/Laser Physics