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:
- Issue 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}
}