Analyzing fluid flows within hollow bodies

Details Analyzing fluid flows within hollow bodies Analyzing fluid flows within hollow bodies

1985-03-22

1987-09-29

Anderson, Bruce C.

Radiant energy

Radiation tracer methods

Radioactive tracer methods

2503562, G21H 502

Patent

active

046970797

ABSTRACT:
Carrier particles, e.g., of metal or metal oxide, are doped with a positron-emitting isotope and injected into fluid flowing in a body, such as a gas turbine engine. The positrons decay on coming to rest, giving two gamma rays which are detected, and a 3D image is built up. The particles are capable of stopping a portion of the positions before they escape from the particles into the surroundings; thus the gamma rays indicate more accurately the position at which the positron was emitted, and give a clearer image.

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