Vibronic Assignments and Vibronic Coupling in the 1E' State of Sym-Triazine by Two Photon Spectroscopy.

Abstract

Two photon photoacoustically detected spectra are reported for the first excited singlet state 1E' of sym-triazine in the gas phase. The origin has been positively identified as of E' symmetry through contour calculations and hot band observations. The excited state absorption is dominated by a highly irregular progression. Observations are strongly supported by a Jahn Teller calculation which predicts: little coupling between A'2 and E' electronic manifolds; a large quadratic coupling and a small linear coupling in the E' manifold; and a quenched angular momentum in this state. Good agreement is shown to exist between one photon and two photon spectroscopic observations and the calculations.

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Document Details

Document Type
Technical Report
Publication Date
Aug 11, 1980
Accession Number
ADA088522

Entities

People

  • Elliot R. Bernstein
  • J. D. Webb
  • K. M. Swift

Organizations

  • Colorado State University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Agreements
  • Angular Momentum
  • Chemistry
  • Couplings
  • Detection
  • Dye Lasers
  • Electronic States
  • Elements
  • Energy Levels
  • Geometry
  • Ground State
  • Lasers
  • Military Research
  • Plastic Explosives
  • Spectra
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics