Vibrational relaxation of highly excited molecules: Mode specific vibrational energy transfer from SF6 to N2O

1987 ◽  
Vol 86 (3) ◽  
pp. 1311-1322 ◽  
Author(s):  
Mitsuo Koshi ◽  
Yannis P. Vlahoyannis ◽  
Robert J. Gordon
Keyword(s):  
Energy Transfer ◽  
Vibrational Relaxation ◽  
Vibrational Energy ◽  
Vibrational Energy Transfer ◽  
Excited Molecules

A BOXCARS investigation of vibrational relaxation in highly excited 1, 2-trans-dichloroethene

1993 ◽  
Vol 71 (11-12) ◽  
pp. 547-551 ◽  
Author(s):  
L. Wang ◽  
J. R. Xu ◽  
W. E. Jones
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Vibrational Relaxation ◽  
Vibrational Energy ◽  
Temporal Evolution ◽  
Maximum Energy ◽  
Vibrational Energy Transfer ◽  
Vibrational Energies

The BOXCARS technique has been used to study the collisional vibrational energy transfer from 1, 2-trans-dichloroethene excited into a quasicontinuum by a pulsed CO2 laser. The temporal evolution behaviour for vibrational energies in different modes was obtained. It has been shown that both the rate and maximum energy transferral to the ν4 mode are slightly larger than rates and energy transferral to the ν1 and ν2 modes and that this specificity declines with increase in excitation energy. The mechanism for this specificity is discussed.

Vibrational Energy Transfer in Silane and Silane Mixtures

1976 ◽  
Vol 31 (10) ◽  
pp. 1203-1209 ◽  
Author(s):  
Willi Janiesch ◽  
Helmut Ulrich ◽  
Peter Hess
Keyword(s):  
Experimental Data ◽  
Energy Transfer ◽  
Relaxation Time ◽  
Vibrational Relaxation ◽  
Energy Exchange ◽  
Vibrational Energy ◽  
Vibrational Energy Transfer

Abstract The vibrational relaxation time for pure SiH4 is 0.10, 0.083 and 0.072 μsec atm (±30%) at 295 K, 375 K and 462 K. For SiH4 diluted in He, D2 and H2 the corresponding numbers are 0.16, 0.081 and 0.031 μsec atm (± 30%) at 295 K. The binary two-level theory has been used to deter-mine the four V -R, T rates in the system SiH4 -CH4, and the rate for V-V exchange between SiH4 and CH4 from experimental data. From the Schwartz-Slawsky-Herzfeld-formula for V -T and V -V, T processes an equation is derived describing V -R and V -V, R energy exchange. The different models are compared with experimental data, especially with those found for the system SiH4 -CH4.

Vibrational Energy Transfer in CHF3 -Mixtures

1976 ◽  
Vol 31 (10) ◽  
pp. 1268-1270 ◽  
Author(s):  
K. Frank ◽  
P. Hess
Keyword(s):  
Energy Transfer ◽  
Vibrational Relaxation ◽  
Vibrational Energy ◽  
Relaxation Times ◽  
Rare Gas ◽  
Vibrational Energy Transfer

Abstract The vibrational relaxation times for pure CHF, and CHF3 diluted in H2, D2, Ar, Kr and Xe are 0.55; 0.01, 0.025, 2.6, 4.8, and 5.6 /μsec atm at 298 K. These measurements complete previous results obtained for the systems CHF3-He, Ne, Ar. Correlation of the rare-gas results according to SSH-theory shows that relatively small rotational contributions may be expected for the heavy collision partners Kr and Xe.

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