An apparatus and a method of focusing a high-current-density electron beam emitted from a cold cathode electron emitter. A series of shaped electrostatic lense are provided in front an emission surface of the cold cathode electron emitter. An ion shield is further inserted in front of the emission surface. By applying different focusing voltages to the shaped electrostatic lenses, the electron beam is focused and well confined.
License Records
David J Whaley
License #:
E091434 - Active
Category:
Emergency medical services
Issued Date:
Nov 6, 2012
Expiration Date:
May 31, 2018
Type:
San Francisco EMS Agency
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David Whaley
Work:
United States Air Force (1991)
Education:
Douglas High School, Embry-Riddle Aeronautical University, Prescott Campus - B.S. Professional Aeronautics
Relationship:
Married
Tagline:
Do it right or do it again.
Bragging Rights:
Father of four sons
David Whaley
Work:
Green Step, LLC - LEED Auditor (2011) Azimuth Capital Funding, LLC - Account Manager (2007)
Education:
University of Maryland University College - Cybersecurity, University of Maryland Baltimore County - Political Science
John Burroughs Fundamental Elementary School Minneapolis MN 1982-1983, Armatage Elementary School Minneapolis MN 1983-1985, Orchard Lake Elementary School Lakeville MN 1985-1989, McGuire Junior High School Lakeville MN 1989-1992
"The way I see this, even more than the medical expenses, it's the living expenses," said David Whaley, a tax and employee benefits lawyer in Cincinnati. "It's the quarantine expenses for somebody who's not sick but can't work because they're in quarantine for 21 days."