Vibrations of porphycene in the S0 and S1 electronic states: Single vibronic level dispersed fluorescence study in a supersonic jet

2013 ◽  
Vol 138 (17) ◽  
pp. 174201 ◽  
Author(s):  
Ephriem T. Mengesha ◽  
Jerzy Sepioł ◽  
Paweł Borowicz ◽  
Jacek Waluk
Keyword(s):  
Supersonic Jet ◽  
Electronic States ◽  
Fluorescence Study ◽  
Dispersed Fluorescence ◽  
Vibronic Level

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

Single vibronic level emission spectroscopy of the low-lying electronic states of NiI

2010 ◽  
Vol 497 (4-6) ◽  
pp. 168-171 ◽  
Author(s):  
V.L. Ayles ◽  
L.G. Muzangwa ◽  
S.A. Reid
Keyword(s):  
Emission Spectroscopy ◽  
Electronic States ◽  
Vibronic Level

Atomic Fluorescence Study of High Temperature Aerodynamic Levitation

1981 ◽  
Vol 9 ◽  
Author(s):  
Paul C. Nordine ◽  
Robert A. Schiffman ◽  
D. S. Sethi
Keyword(s):  
High Temperature ◽  
Supersonic Jet ◽  
Ideal Gas ◽  
Thermal Gradients ◽  
Fluorescence Study ◽  
Atomic Fluorescence ◽  
Argon Gas ◽  
Supersonic Jet Expansion ◽  
Aerodynamic Levitation ◽  
Fluorescence Thermometry

ABSTRACTUltraviolet laser induced atomic fluorescence has been used to characterize supersonic jet aerodynamic levitation experiments. The levitated specimen was a 0.4 cm sapphire sphere that was separately heated at temperatures up to 2327K by an infrared laser. The supersonic jet expansion and thermal gradients in the specimen wake were studied by measuring spatial variations in the concentration of atomic Hg added to the levitating argon gas stream. Further applications of atomic fluorescence in containerless experiments, such as ideal gas fluorescence thermometry and containerless process control are discussed.

A dispersed fluorescence andab initioinvestigation of the X̃B12 and ÃA12 electronic states of the PH2 molecule

2006 ◽  
Vol 124 (9) ◽  
pp. 094306 ◽  
Author(s):  
Z. J. Jakubek ◽  
P. R. Bunker ◽  
M. Zachwieja ◽  
S. G. Nakhate ◽  
B. Simard ◽  
...  
Keyword(s):  
Electronic States ◽  
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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