Properties of the iodine molecule relevant to laser-induced fluorescence experiments in gas flows

1990 ◽  
Vol 10 (1) ◽  
pp. 1-11 ◽  
Author(s):  
B. Hiller ◽  
R. K. Hanson
Keyword(s):  
Laser Induced Fluorescence ◽  
Gas Flows ◽  
Iodine Molecule

Laser-induced fluorescence technique for velocity field measurements in subsonic gas flows

1983 ◽  
Vol 8 (9) ◽  
pp. 474 ◽  
Author(s):  
B. Hiller ◽  
J. C. McDaniel ◽  
E. C. Rea ◽  
R. K. Hanson
Keyword(s):  
Velocity Field ◽  
Field Measurements ◽  
Laser Induced Fluorescence ◽  
Gas Flows ◽  
Fluorescence Technique

In Situ Observation of Catalyzed Gasification of Graphite by Nickel

1981 ◽  
Vol 39 ◽  
pp. 76-77
Author(s):  
R. T. K. Baker ◽  
R. D. Sherwood
Keyword(s):  
Objective Lens ◽  
In Situ Observation ◽  
Gas Flows ◽  
Catalytic Gasification ◽  
Television Camera ◽  
Viewing Screen ◽  
Fuels And Chemicals ◽  
Gasification Of Carbon ◽  
Transmission Microscope

The catalytic gasification of carbon at high temperature by microscopic size metal particles is of fundamental importance to removal of coke deposits and conversion of refractory hydrocarbons into fuels and chemicals. The reaction of metal/carbon/gas systems can be observed by controlled atmosphere electron microscopy (CAEM) in an 100 KV conventional transmission microscope. In the JEOL gas reaction stage model AGl (Fig. 1) the specimen is positioned over a hole, 200μm diameter, in a platinum heater strip, and is interposed between two apertures, 75μm diameter. The control gas flows across the specimen and exits through these apertures into the specimen chamber. The gas is further confined by two apertures, one in the condenser and one in the objective lens pole pieces, and removed by an auxiliary vacuum pump. The reaction zone is <1 mm thick and is maintained at gas pressure up to 400 Torr and temperature up to 1300<C as measured by a Pt-Pt/Rh 13% thermocouple. Reaction events are observed and recorded on videotape by using a Philips phosphor-television camera located below a hole in the center of the viewing screen. The overall resolution is greater than 2.5 nm.

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