Pulsed supersonic gas flow injector for use in study of thermonuclear fusion plasmas has first chamber with gas under pressure on either side of free piston

摘要

A pulsed supersonic gas flow injector has a first chamber (2) in which the gas to be injected is located under pressure on either side of a free piston (4). It has a propulsion unit (12) for the piston and a supersonic gas ejection tube (6) connected to the first chamber via an aperture (8) controlled by a valve (10) actuated by the free piston striking it. The propulsion unit is designed to create a difference in injected gas pressure on opposite sides of the piston, and has a second chamber (14) in which the injected gas is located under pressure on either side of a controlled piston (16).