Porous ceramic tubing for flowing gas lasers

Details Porous ceramic tubing for flowing gas lasers Porous ceramic tubing for flowing gas lasers

1975-12-03

1978-05-23

Robinson, Ellis

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

138177, 3132314, 331 945D, F16L 908

Patent

active

040911330

ABSTRACT:
Porous ceramic materials are used for the walls of tubing for flowing gas lasers. Analysis of the gas flow shows that the axial pressure variation in the porous wall tubes is more gradual than for dense wall tubes leading to more uniform gain conditions. The saturation intensity is more uniform not only due to the reduced pressure anisotropy but also, at higher flow rates, because of axially varying particle dwell times in the discharge region.

REFERENCES:
patent: 2149133 (1939-02-01), Cohn
patent: 3275358 (1966-09-01), Shonebarger
patent: 3753144 (1973-08-01), Kearns
patent: 3830173 (1974-08-01), Hubble
"Porous Ceramics," Kirk-Othmer, Encycl. of Chem. Tech., vol. 4, Second Ed., p. 838-839, 791-795.

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