Computational and experimental study of vibrational relaxation in liquids: Symmetric top molecules

1980 ◽  
Vol 72 (4) ◽  
pp. 2459-2465 ◽  
Author(s):  
Monique Constant ◽  
Renaud Fauquembergue
Keyword(s):  
Experimental Study ◽  
Vibrational Relaxation ◽  
Symmetric Top Molecules

Experimental study of the vibrational relaxation of ortho and para-H2 in collisions with 4He in the range 300–50 K

1976 ◽  
Vol 37 (3) ◽  
pp. 408-411 ◽  
Author(s):  
Marie-Martine Audibert ◽  
Ramon Vilaseca ◽  
Jacques Lukasik ◽  
Jacques Ducuing
Keyword(s):  
Experimental Study ◽  
Vibrational Relaxation

Establishment of the Bow-Wave in the Supersonic Flow of Carbon Dioxide Past a Sphere

1968 ◽  
Vol 19 (1) ◽  
pp. 51-58 ◽  
Author(s):  
H. K. Zienkiewicz ◽  
I. D. Malloch
Keyword(s):  
Carbon Dioxide ◽  
Experimental Study ◽  
Supersonic Flow ◽  
Shock Tube ◽  
Vibrational Relaxation ◽  
Incident Shock ◽  
Slight Effect ◽  
Schlieren Technique ◽  
Bow Wave ◽  
Made In

SummaryAn experimental study of bow-wave trajectories for a sphere in CO2 has been made in a shock tube, using a drum-camera-schlieren technique, for incident shock Mach numbers of 2·4, 2·8 and 4·0. Results show that vibrational relaxation has only a slight effect on the bow-wave formation time but significantly affects the stand-off distance in steady flow.

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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