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US 4,325,006 AGranted
High pulse repetition rate coaxial flashlamp
AssigneeJersey Nuclear-Avco Isotopes, Inc.
InventorRichard G. Morton
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Abstract
A coaxial flashlamp for pulsed operation at high repetition rates having an annular, light emitting discharge path between fluid cooled coaxially disposed, inner and outer optically transparent tubes. Electrodes are provided at opposite ends of the discharge paths and a gas such as Xenon is provided between the electrodes. The gas is discharged by confinement between the two tubes, forced to assume a dispersed shape which permits more efficient cooling at the discharge borders by fluid coolant inside the inner tube and around the outer tube.
Claims9
A flashlamp for pulsed operation at high repetition rates comprising:
- a hollow, optically transparent outer tube;
- a hollow, optically transparent central tube, coaxial with and within said outer tube and defining between said outer and central tubes a cylindrical discharge path having inner and outer surfaces coextensive with the inner and outer surfaces of said outer and central tubes;
- a gas along said discharge path and capable of electrical energization to a light emitting condition;
- means for energizing said gas to emit pulses of light at a rate above 200 Hz, and
- an optically transparent envelope surrounding said outer tube and providing a conduit for coolant between itself and said outer tube.
- means for cooling substantially the whole of at least said inner and outer surfaces by flowing a coolant through said central tube and between said envelope and outer tube thereby to shorten the fall time of the emitted light pulses.
3 more elements
Dependencies are inferred from the claim text.