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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:
; ;
Publication 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.
Rao, Triveni, Walsh, John, & Gangone, Elizabeth. Vacuum encapsulated hermetically sealed diamond amplified cathode capsule and method for making same. United States.
Rao, Triveni, Walsh, John, and Gangone, Elizabeth. 2014. "Vacuum encapsulated hermetically sealed diamond amplified cathode capsule and method for making same". United States. https://www.osti.gov/servlets/purl/1166751.
@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 = {},
url = {https://www.osti.gov/biblio/1166751}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {12}
}