Ka-Ngo Leung - Hercules CA Keith C. Gordon - Berkeley CA Dean O. Kippenham - Castro Valley CA Peter Purgalis - San Francisco CA David Moussa - San Francisco CA Malcom D. Williams - Danville CA Stephen B. Wilde - Pleasant Hill CA Mark W. West - Albany CA
Assignee:
The United States of America as represented by the United States Department of Energy - Washington DC
International Classification:
H01J 114 H01J 116 H01J 1910
US Classification:
313346R
Abstract:
A large area directly heated lanthanum hexaboride (LaB. sub. 6) cathode system (10) is disclosed. The system comprises a LaB. sub. 6 cathode element (11) generally circular in shape about a central axis. The cathode element (11) has a head (21) with an upper substantially planar emission surface (23), and a lower downwardly and an intermediate body portion (26) which diminishes in cross-section from the head (21) towards the base (22) of the cathode element (11). A central rod (14) is connected to the base (22) of the cathode element (11) and extends along the central axis. Plural upstanding spring fingers (37) are urged against an outer peripheral contact surface (24) of the head end (21) to provide a mechanical and electrical connection to the cathode element (11).
Charge Neutralization Apparatus For Ion Implantation System
Ka-Ngo Leung - Hercules CA Wulf B. Kunkel - Berkeley CA Malcom D. Williams - Danville CA Charles M. McKenna - Boxford MA
Assignee:
Varian Associates, Inc. - Palo Alto CA
International Classification:
H01J 37317
US Classification:
2504922
Abstract:
Methods and apparatus for neutralization of a workpiece such as a semiconductor wafer in a system wherein a beam of positive ions is applied to the workpiece. The apparatus includes an electron source for generating an electron beam and a magnetic assembly for generating a magnetic field for guiding the electron beam to the workpiece. The electron beam path preferably includes a first section between the electron source and the ion beam and a second section which is coincident with the ion beam. The magnetic assembly generates an axial component of magnetic field along the electron beam path. The magnetic assembly also generates a transverse component of the magnetic field in an elbow region between the first and second sections of the electron beam path. The electron source preferably includes a large area lanthanum hexaboride cathode and an extraction grid positioned in close proximity to the cathode. The apparatus provides a high current, low energy electron beam for neutralizing charge buildup on the workpiece.
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Company / Classification
Phones & Addresses
1234 Ashby Ave, Berkeley, CA 94702
Malcom D. Williams President, Secretary
Superior Gas & Appliance Service, Inc
PO Box 492, Okeechobee, FL 34973 1529 NE 48 Ave, Okeechobee, FL 34972
Malcom Williams
Teen Leaders of California Youth Organizations & Centers
According to Malcom Williams, manager of the Aerial Division and chief pilot with Vector Disease Control Inc., the spraying will not harm the bees. He said the spraying is done in the evening when bees are not active but mosquitoes are.
Date: Aug 19, 2014
Category: Health
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Malcolm Williams & Great Faith - "A Chance"
Video clip RECORDED February 5, 2006 - Song: "A Chance"; On lead, Malc...
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Malcom Williams & Great Faith Praise Break 12...
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The Blood Still Works- Malcolm Williams
Hands Anointed by God tutorial The Blood Still Works- Malcolm Williams
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Malcolm Williams and Great Faith
Malcolm Williams and the Voices of Great Faith!
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malcolm williams and great faith
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