Photolysis of HOCl at 248 nm in a supersonic molecular beam: laser-induced fluorescence spectra of OH

1990 ◽  
Vol 86 (23) ◽  
pp. 3831 ◽  
Author(s):  
Andrew J. Bell ◽  
Patrick R. Pardon ◽  
Christopher G. Hickman ◽  
Jeremy G. Frey
Keyword(s):  
Fluorescence Spectra ◽  
Molecular Beam ◽  
Laser Induced Fluorescence ◽  
Supersonic Molecular Beam ◽  
Beam Laser

A study of the A2Π/B2Σ+ – X2Σ+ band systems of calcium monohydride (CaH) using a supersonic molecular beam source and laser-induced fluorescence detection

2004 ◽  
Vol 82 (6) ◽  
pp. 779-790 ◽  
Author(s):  
T C Steimle ◽  
Jamie Gengler ◽  
Jinhai Chen
Keyword(s):  
Molecular Beam ◽  
Band System ◽  
Energy Levels ◽  
Laser Induced Fluorescence ◽  
Effective Hamiltonian ◽  
Beam Source ◽  
Supersonic Molecular Beam ◽  
Laser Induced Fluorescence Detection ◽  
Local Perturbations ◽  
Beam Sample

The high-resolution laser-induced fluorescence spectrum of a molecular beam sample of calcium monohydride (CaH) in the region of the strongly overlapped (1,0) A2Π – X2Σ+ and (0,0) B2Σ+ –  X2Σ+ band systems near 630 nm and the (0,0) A2Π –  X2Σ+ band system near 690 nm have been recorded and analyzed. The spectral features exhibit a small splitting that is attributed to proton magnetic hyperfine interaction in the X2Σ+ (v = 0) state. The energy levels of the A2Π(v = 0) vibronic state were modeled using a traditional "effective" Hamiltonian approach, whereas those for the interacting A2Π(v = 1)/B2Σ+(v = 0) vibronic levels were modeled by augmenting the traditional effective Hamiltonian with terms to account for local perturbations. An interpretation of the field-free parameters is presented.Key words: calcium monohydride, molecular beam, fluorescence.

scholarly journals Pyrimidine, an Intermediate State Molecule?

1986 ◽  
Vol 5 (6) ◽  
pp. 339-350 ◽  
Author(s):  
W. Leo Meerts ◽  
W. A. Majewski
Keyword(s):  
Excited State ◽  
High Resolution ◽  
Ring Laser ◽  
Fluorescence Spectra ◽  
Molecular Beam ◽  
Energy Levels ◽  
Laser Induced Fluorescence ◽  
Spectral Features ◽  
Electronically Excited State ◽  
Electronically Excited

The S1(1B1) ← S0(1A1) transition in pyrazine has been investigated. High resolution laser induced fluorescence spectra were obtained by crossing a well collimated molecular beam with UV radiation of an intra-cavity frequency doubled ring laser. The extreme resolution enabled us to observe the molecular eigenstates of the electronically excited state. Most of the spectral features of the S1 state could be interpreted in terms of a slightly perturbed axis switched rotor spectrum. The perturbations show up both in the energy levels of the S1 and in the intensities of the observed transitions.

Sign in / Sign up

Export Citation Format

Share Document