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Title: Vacuum encapsulated hermetically sealed 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 cold-weld ring disposed between the cathode element and the annular insulating spacer and a second cold-weld ring disposed between the annular insulating spacer and the diamond window element. The cathode capsule is formed by a vacuum cold-weld process such that the first cold-weld ring forms a hermetical seal between the cathode element and the annular insulating spacer and the second cold-weld ring forms a hermetical seal between the annular spacer and the diamond window element whereby a vacuum encapsulated chamber is formed within the capsule.

Inventors:
; ;
Issue Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1166751
Patent Number(s):
8,922,107
Application Number:
14/115,534
Assignee:
Brookhaven Science Associates, LLC (Upton, NY)
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 May 09
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION

Citation Formats

Rao, Triveni, Walsh, John, and Gangone, Elizabeth. Vacuum encapsulated hermetically sealed diamond amplified cathode capsule and method for making same. United States: N. p., 2014. Web.
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Rao, Triveni, Walsh, John, & Gangone, Elizabeth. Vacuum encapsulated hermetically sealed diamond amplified cathode capsule and method for making same. United States.
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Rao, Triveni, Walsh, John, and Gangone, Elizabeth. Tue . "Vacuum encapsulated hermetically sealed diamond amplified cathode capsule and method for making same". United States. https://www.osti.gov/servlets/purl/1166751.
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@article{osti_1166751,
title = {Vacuum encapsulated hermetically sealed diamond amplified cathode capsule and method for making same},
author = {Rao, Triveni and Walsh, John 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 cold-weld ring disposed between the cathode element and the annular insulating spacer and a second cold-weld ring disposed between the annular insulating spacer and the diamond window element. The cathode capsule is formed by a vacuum cold-weld process such that the first cold-weld ring forms a hermetical seal between the cathode element and the annular insulating spacer and the second cold-weld ring forms a hermetical seal between the annular spacer and the diamond window element whereby a vacuum encapsulated chamber is formed within the capsule.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {12}
}
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