US Patent:
20140070701, Mar 13, 2014
Inventors:
Thomas Schenkel - San Francisco CA, US
Qing Ji - Albany CA, US
Arun Persaud - El Cerrito CA, US
Amy V. Sy - Berkeley CA, US
Assignee:
The Regents of the University of California - Oakland CA
International Classification:
H01J 27/04
Abstract:
This disclosure provides systems, methods, and apparatus for ion generation. In one aspect, an apparatus includes an anode, a first cathode, a second cathode, and a plurality of cusp magnets. The anode has a first open end and a second open end. The first cathode is associated with the first open end of the anode. The second cathode is associated with the second open end of the anode. The anode, the first cathode, and the second cathode define a chamber. The second cathode has an open region configured for the passage of ions from the chamber. Each cusp magnet of the plurality of cusp magnets is disposed along a length of the anode.