US Government As Represented by the Secretary of the Army

Leon J Decker

Mark A DeWilde

Emmet Donnelly

Arthur Cohen

This invention provides a reliable, operationally simple means of producing suspension of dust or gas at the end wall of a shock tube prior to the arrival of the incident shock wave. It consists of a cylindrically shaped sample chamber having diaphragms at both ends and a cylinder-and-piston apparatus for driving a powder or other sample from the inside of the chamber into the shock tube.

Powder dispersal unit

A passive thermal control system for a flashlamp-pumped dye laser utilizes heated deionized water in a heat exchanger located in the reservoir of the dye lasing solution to minimize the temperature gradients in the dye lasing solution by decreasing the difference in temperature between the dye lasing solution and the deionized water flashlamp coolant.

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Aberdeen, MD, United States of America

Leon J Decker