Vibrational Relaxation of the Bending Mode of HDO in Liquid D2O

2005 ◽  
Vol 109 (24) ◽  
pp. 5303-5306 ◽  
Author(s):  
Pavol Bodis ◽  
Olaf F. A. Larsen ◽  
Sander Woutersen
Keyword(s):  
Vibrational Relaxation ◽  
Bending Mode

Vibrational relaxation of the H[sub 2]O bending mode in liquid water

2004 ◽  
Vol 121 (24) ◽  
pp. 12143 ◽  
Author(s):  
Olaf F. A. Larsen ◽  
Sander Woutersen
Keyword(s):  
Liquid Water ◽  
Vibrational Relaxation ◽  
Bending Mode

Pure intermolecular vibrational relaxation of the OH bending mode of water molecules

2004 ◽  
Vol 120 (18) ◽  
pp. 8866-8867 ◽  
Author(s):  
Gerhard Seifert ◽  
Toralf Patzlaff ◽  
Heinrich Graener
Keyword(s):  
Vibrational Relaxation ◽  
Water Molecules ◽  
Bending Mode

Measurement of the relaxation frequency of the asymmetric stretching mode of carbon dioxide

1969 ◽  
Vol 35 (1) ◽  
pp. 171-183 ◽  
Author(s):  
J. P. Hodgson ◽  
R. J. Hine
Keyword(s):  
Carbon Dioxide ◽  
Shock Waves ◽  
Shock Tube ◽  
Vibrational Relaxation ◽  
Thermal Emission ◽  
Relaxation Frequency ◽  
Rate Of Change ◽  
Density Measurements ◽  
Bending Mode ◽  
Made In

The vibrational relaxation frequency of carbon dioxide has been determined by measuring the rate of change of thermal emission in shock waves near 4±3μ. This method of measuring the relaxation frequency depends mainly on the degree of excitation of the asymmetric stretching mode of the molecule, and the results are compared with those of earlier density measurements made in the same shock tube. The gas samples used are not optically thin, and it is shown that self-absorption can be taken into account. The results imply that the relaxation frequency of the asymmetric stretching mode is about 70% of that of the bending mode.

scholarly journals Vibrational Relaxation of the 2ν5 Overtone of CDCl3 Following Tea CO2 Laser Excitation of the ν4 Mode

1994 ◽  
Vol 14 (4) ◽  
pp. 191-200 ◽  
Author(s):  
M. A. Vazquez ◽  
M. L. Azcárate ◽  
E. J. Quel ◽  
L. Doyennette ◽  
C. Rinaldi ◽  
...  
Keyword(s):  
Time Constant ◽  
Rate Constant ◽  
Fluorescence Intensity ◽  
Time Variation ◽  
Vibrational Relaxation ◽  
Laser Excitation ◽  
Fluorescence Decay ◽  
Tea Co2 Laser ◽  
Bending Mode ◽  
Fast Rise

The time variation of the 2ν5 fluorescence intensity was measured in CDCl3 excited in the ν4 C–D bending mode by a TEA CO2 laser operating on the 10P(48) line. A fast rise of the fluorescence, with a time constant ≤ 1 μs Torr, was first observed, showing that a fast equilibration of population occurs between the ν4 and ν5 modes through a ν4 ↔ ν5 Coriolis-assisted intermode transfer and a ν5 ↔ 2ν5 near-resonant ladder-climbing process. Then a first fast fluorescence decay was observed and attributed to a (ν4, ν5) → ν2 intermode transfer with a rate constant of (7.10 ± 1.13)ms-1 Torr-1. At last, a much slower decay, with a rate constant of 0.111 ± 0.015 ms-1 Torr-1, results from the less efficient intermode transfer and V–T,R deexcitation processes involving the ν3 and ν6 states, and which compete to relax the gas to a thermodynamic equilibrium.

Double-Excitation Dynamics in m-LPPP probed with sub-20 fs Time Resolution

2003 ◽  
Vol 771 ◽  
Author(s):  
C. Gadermaier ◽  
G. Cerullo ◽  
C. Manzoni ◽  
U. Scherf ◽  
E.J.W. List ◽  
...  
Keyword(s):  
Vibrational Relaxation ◽  
Broad Band ◽  
Generation Efficiency ◽  
Exciton Dissociation ◽  
Charge Generation ◽  
Carrier Generation ◽  
Dissociation Probability ◽  
Ultrafast Relaxation ◽  
First Excited State ◽  
Differential Transmission

AbstractIn a novel modification of transient differential transmission spectroscopy, the first excited state S1 is reexcited via a second laser pulse towards a higher lying state Sn. The dynamics of the relaxation of this state Sn as well as the states created from Sn are revealed by a broad-band probe pulse.We find that the charge carrier generation efficiency from Sn is higher compared to S1. The push and probe durations below 20 fs enable the temporal resolution of the ultrafast relaxation of the Sn state and enables us to identify the two main contributions to enhanced charge generation from Sn, energy migration towards sites of high dissociation probability, and exciton dissociation during vibrational relaxation.

An Ultrasonic Actuating Driver for a Central Supporting Bending Mode Using a Motional Current Technique

2009 ◽  
Vol E92-C (8) ◽  
pp. 1058-1065 ◽  
Author(s):  
Fuhliang WEN ◽  
Chao-Chun WEN ◽  
Ming-Hung LAI ◽  
Ichien HSU
Keyword(s):  
Current Technique ◽  
Bending Mode
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