The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2003
Filed:
Jan. 20, 2000
Arthur Carlson, Garching, DE;
Archimedes Technology Group, Inc., San Diego, CA (US);
Abstract
An inverted orbit mass filter includes a cylindrical container located at a radial distance (r ) from its longitudinal axis, and a cylindrical collector located at a radial distance (r ) from the axis and coaxially positioned in the container to establish a plasma chamber therebetween. A uniform magnetic field is axially aligned in the chamber and an inwardly directed radial electric field is crossed with the magnetic field. A multi-species plasma including both low mass charged particles (M ) and high mass charged particles (M ) is injected into the chamber between the container (r ) and a radial distance (r ) from the axis. In their relationship to each other: r >r >r . Inside the chamber the multi-species plasma has a low collisional density wherein there is a very low probability of particle collision. Consequently, with respective cyclotron trajectories T and T for the particles M and M , when T <(r −r ) and T >(r −r ) then the particles M will be influenced by the magnetic and electric fields into collision with the collector, and the particles M will avoid the collector and, therefore, pass through the chamber for subsequent collection.