Potential surface dependence of cross sections and rate constants for the vibrational relaxation of H2 in collisions with 4He

1975 ◽  
Vol 8 (1-2) ◽  
pp. 86-98 ◽  
Author(s):  
Millard H. Alexander
Keyword(s):  
Cross Sections ◽  
Rate Constants ◽  
Vibrational Relaxation ◽  
Potential Surface

The primary process in the photolysis of hexafluoroacetone vapour V. Mechanistic considerations

1968 ◽  
Vol 306 (1487) ◽  
pp. 541-551 ◽  
Keyword(s):  
Rate Constants ◽  
Vibrational Relaxation ◽  
Potential Surface ◽  
Singlet State ◽  
Primary Process ◽  
Kcal Mole ◽  
Unbounded Region ◽  
Do So ◽  
Single Potential

Data presented in the previous parts of this series are discussed in terms of the mechanism adopted for the primary process and it is noted that the data follow the general trends predicted by that mechanism. Five independent tests applied to the data indicate that the vibrational relaxation in the S 1 state occurs by a cascade of weak collisions; although the number of stages involved cannot be determined with precision, it is unlikely to exceed five. Rate constants are evaluated from the data for reactions (4) to (9). A reasonably reliable value of E 8 = 16 kcal/mole was obtained. The value of A s suggests that the decomposition from the trip let occurs along a single potential surface. This hypothesis is developed to suggest that molecules which decompose from the singlet state possibly do so via an unbounded region of the triplet surface.

Singlet Methylene Removal Rate Constants from the (0,1,0) Vibrational Level: Enhancement via Complex-Mediated Vibrational Relaxation

2001 ◽  
Vol 215 (6) ◽  
Author(s):  
M.A. Buntine ◽  
G.J. Gutsche ◽  
W.S. Staker ◽  
M.W. Heaven ◽  
K.D. King ◽  
...  
Keyword(s):  
Vibrational Level ◽  
Rate Constants ◽  
Vibrational Relaxation ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Removal Rate ◽  
Laser Flash ◽  
Laser Absorption ◽  
Photolysis Laser ◽  
Singlet Methylene

The technique of laser flash photolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylene,

Quantum mechanical integral cross sections and rate constants for the F+HD reactions

2000 ◽  
Vol 112 (22) ◽  
pp. 9802-9809 ◽  
Author(s):  
Dong H. Zhang ◽  
Soo-Y. Lee ◽  
Michael Baer
Keyword(s):  
Cross Sections ◽  
Rate Constants ◽  
Quantum Mechanical

Analytical Formulae for Cross Sections and Rate Constants of Elementary Processes in Gases

1985 ◽  
pp. 697-704
Author(s):  
G. V. Dubrovskiy ◽  
A. V. Bogdanov ◽  
Yu. E. Gorbachev ◽  
L. F. Vyunenko ◽  
V. A. Pavlov ◽  
...  
Keyword(s):  
Cross Sections ◽  
Rate Constants ◽  
Elementary Processes ◽  
Analytical Formulae
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