Spin-Orbit Relaxation Rates of Bi(6p(3) 2D(3/2)) Following Photolysis of Bi(CH3)3 at Lambda = 193 nm

Abstract

Rate coefficients for the collisional relaxation of the first excited spin-orbit state of Bi smuth (6p3, 2D3/2) have been measured at 295 K for argon, carbon dioxide, sulfur hexaflouride, hydrogen, deuterium, hydrogen flouride. The excited Bi atoms were prepared by excimer laser photolysis of trimethyl bismuth (TMB) at 193 nm and monitored directly in emission. The rate coefficient for quenching by the precursor TMB and a lower limit for removal by CH3 photofragments have also been established. Where applicable, our results are compared with the earlier work of Bevan and Husain and of Trainor. The suitability of long-range interaction models is discussed for those cases where isotopic substitution leads to markedly different quenching rates.

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Document Details

Document Type
Technical Report
Publication Date
Jul 07, 1989
Accession Number
ADA211792

Entities

People

  • J. B. Koffend
  • J. S. Holloway
  • R. F. Heidner Iii

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Classification
  • Coefficients
  • Decomposition
  • Emission
  • Energy Transfer
  • Excimer Lasers
  • Ground State
  • Lasers
  • Lysis
  • Measurement
  • Partial Pressure
  • Photolysis
  • Quenching
  • Security
  • Spin-Orbit Interaction

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Molecular Photonics/Laser Physics

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Space