A method and apparatus using cold gas jets for producing a substantially uniform layer of cryogenic materials on the inner surface of hollow spherical members having one or more layers, such as inertially imploded targets. By vaporizing and quickly refreezing cryogenic materials contained within a hollow...http://www.google.ca/patents/US4190016?utm_source=gb-gplus-sharePatent US4190016 - Cryogenic target formation using cold gas jets
