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Title: Vacuum encapsulated, high temperature diamond amplified cathode capsule and method for making same

Abstract

A vacuum encapsulated, hermetically sealed cathode capsule for generating an electron beam of secondary electrons, which generally includes a cathode element having a primary emission surface adapted to emit primary electrons, an annular insulating spacer, a diamond window element comprising a diamond material and having a secondary emission surface adapted to emit secondary electrons in response to primary electrons impinging on the diamond window element, a first high-temperature solder weld disposed between the diamond window element and the annular insulating spacer and a second high-temperature solder weld disposed between the annular insulating spacer and the cathode element. The cathode capsule is formed by a high temperature weld process under vacuum such that the first solder weld forms a hermetical seal between the diamond window element and the annular insulating spacer and the second solder weld forms a hermetical seal between the annular spacer and the cathode element whereby a vacuum encapsulated chamber is formed within the capsule.

Inventors:
; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1234205
Patent Number(s):
9,224,570
Application Number:
13/896,459
Assignee:
Brookhaven Science Associates, LLC
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 May 17
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Rao, Triveni, Walsh, Josh, and Gangone, Elizabeth. Vacuum encapsulated, high temperature diamond amplified cathode capsule and method for making same. United States: N. p., 2015. Web.
Rao, Triveni, Walsh, Josh, & Gangone, Elizabeth. Vacuum encapsulated, high temperature diamond amplified cathode capsule and method for making same. United States.
Rao, Triveni, Walsh, Josh, and Gangone, Elizabeth. Tue . "Vacuum encapsulated, high temperature diamond amplified cathode capsule and method for making same". United States. https://www.osti.gov/servlets/purl/1234205.
@article{osti_1234205,
title = {Vacuum encapsulated, high temperature diamond amplified cathode capsule and method for making same},
author = {Rao, Triveni and Walsh, Josh and Gangone, Elizabeth},
abstractNote = {A vacuum encapsulated, hermetically sealed cathode capsule for generating an electron beam of secondary electrons, which generally includes a cathode element having a primary emission surface adapted to emit primary electrons, an annular insulating spacer, a diamond window element comprising a diamond material and having a secondary emission surface adapted to emit secondary electrons in response to primary electrons impinging on the diamond window element, a first high-temperature solder weld disposed between the diamond window element and the annular insulating spacer and a second high-temperature solder weld disposed between the annular insulating spacer and the cathode element. The cathode capsule is formed by a high temperature weld process under vacuum such that the first solder weld forms a hermetical seal between the diamond window element and the annular insulating spacer and the second solder weld forms a hermetical seal between the annular spacer and the cathode element whereby a vacuum encapsulated chamber is formed within the capsule.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {12}
}

Patent:

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