Adam Lee Mitchell

US Patent:

20160056006, Feb 25, 2016

Filed:

Aug 21, 2014

Appl. No.:

14/465797

Inventors:

Curtis G. Allen - Menlo Park CA, US
Christopher P. Ferrari - Menlo Park CA, US
Adam J. Mitchell - Menlo Park CA, US

International Classification:

H01J 29/48
H01J 29/56
H01J 29/58

Abstract:

The present invention generally relates to systems and methods for generating controllable beam of electrons using a hollow-cathode triode electron gun that substantially mitigate impact of back-streaming electrons.

US Patent:

20160056007, Feb 25, 2016

Filed:

Jun 12, 2015

Appl. No.:

14/738804

Inventors:

- Menlo Park CA, US
Christopher P. Ferrari - Menlo Park CA, US
Adam J. Mitchell - Menlo Park CA, US

International Classification:

H01J 29/48
H01J 29/58
H01J 29/04

Abstract:

The present invention generally relates to systems and methods for generating controllable beam of electrons using a hollow-cathode triode electron gun that substantially mitigate impact of back-streaming electrons. In one embodiment, a triode hollow-cathode electron gun is configured to provide electrons and substantially mitigates the impact of back-streaming electrons. The triode hollow-cathode electron gun includes a hollow cathode, a heating filament, an anode, a control grid, a shadow grid and a sleeve mechanically coupled to the hollow-cathode. The sleeve is substantially centered on the axis of the triode hollow-cathode electron gun and configured to maintain shape and trajectory of emitted beams of electrons.