The interacting B 4Σ− and d 2Π states of CrN: A laser induced and dispersed fluorescence study

1997 ◽  
Vol 107 (12) ◽  
pp. 4473-4482 ◽  
Author(s):  
Chi Zhou ◽  
Walter J. Balfour ◽  
Charles X. W. Qian
Keyword(s):  
Fluorescence Study ◽  
Dispersed Fluorescence

Dynamics of linear and T-shaped Ar–I2 dissociation upon B←X optical excitation: A dispersed fluorescence study of the linear isomer

1999 ◽  
Vol 111 (17) ◽  
pp. 7844-7856 ◽  
Author(s):  
Amy E. Stevens Miller ◽  
Cheng-Chi Chuang ◽  
Henry C. Fu ◽  
Kelly J. Higgins ◽  
William Klemperer
Keyword(s):  
Optical Excitation ◽  
Fluorescence Study ◽  
Linear Isomer ◽  
Dispersed Fluorescence

Spectroscopy of van der Waals molecules: Isomers and vibrational predissociation

2001 ◽  
Vol 79 (2-3) ◽  
pp. 101-108 ◽  
Author(s):  
W Klemperer ◽  
C -C Chuang ◽  
K J Higgins ◽  
A Stevens Miller ◽  
H C Fu
Keyword(s):  
Ab Initio Calculation ◽  
Binding Energies ◽  
Inert Gas ◽  
Fluorescence Study ◽  
Linear Isomer ◽  
Vibrational Predissociation ◽  
Good Accord ◽  
Fluoride Complexes ◽  
Dispersed Fluorescence ◽  
State Dissociation

The inert-gas-halogen complexes have been studied for several decades by jet spectroscopy. Much of the seemingly bizarre behavior has become understandable in terms of two virtually isoenergetic isomer forms. The recently recognized linear isomer of Ar–I2 has a virtually continuous B ¬ X excitation spectrum. It also undergoes a very rapid vibrational predissociation, and suffers no electronic quenching from the B state. The well-known T-shaped isomer shows slow vibrational predissociation, which is competitive with electronic quenching. The quenching distorts the vibrational distribution of the I2 B state photofragments, consequently leading to a false estimation of the T-shaped Ar–I2 (B) state dissociation energy. The binding energies for the T-shaped Ar–I2 (X) and Ar–I2 (B) are unambiguously determined from the recent dispersed fluorescence study, which are also in good accord with the ab initio calculation. We discuss aspects of pure vibrational laser-induced fluorescence of hydrogen fluoride complexes. We contrast the behavior of Ar–HF with Ne–HF and present new results for the vHF = 3 level of Ne–HF. PACS Nos.: 33.80Gj, 34.30th

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