ES2721017T3 - CNT-based high energy electron source with remote electromagnetic wave control element - Google Patents

CNT-based high energy electron source with remote electromagnetic wave control element Download PDF

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Publication number
ES2721017T3
ES2721017T3 ES15820149T ES15820149T ES2721017T3 ES 2721017 T3 ES2721017 T3 ES 2721017T3 ES 15820149 T ES15820149 T ES 15820149T ES 15820149 T ES15820149 T ES 15820149T ES 2721017 T3 ES2721017 T3 ES 2721017T3
Authority
ES
Spain
Prior art keywords
electrode
emitter
scco
electromagnetic wave
field effect
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
ES15820149T
Other languages
Spanish (es)
Inventor
Jean-Paul Mazellier
Pierre Legagneux
Laurent Gangloff
Florian Andrianiazy
Pascal Ponard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thales SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thales SA filed Critical Thales SA
Application granted granted Critical
Publication of ES2721017T3 publication Critical patent/ES2721017T3/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/304—Field-emissive cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/065—Field emission, photo emission or secondary emission cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/062—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/068—Multi-cathode assembly

Abstract

Fuente de electrones de alta energía adaptada para ser controlada por una onda electromagnética que comprende un recinto (101) de vacío, un cátodo conmutable o modulable (104) basado en emisores de efecto de campo (105) que comprende al menos un electrodo (111) de apantallamiento, al menos un emisor de efecto de campo (105) conectado a un electrodo (110) de base dispuesto sobre un sustrato (112), un ánodo (106) conectado a tierra, una alimentación de alta (103) tensión, estando dicha alimentación (103) de alta tensión adaptada para suministrar un potencial para crear un campo de ánodo suficiente para inducir la emisión desde el emisor (105) de efecto de campo, al menos un circuito (109) de control para una fuente de corriente adaptada para ser controlada por una onda (120) electromagnética llamada SCCO conectada a dicho cátodo (104) conmutable o modulable caracterizada porque: - la SCCO (120) se dispone fuera del recinto de vacío, - un terminal (132) de entrada de la SCCO se conecta a la alimentación de alta tensión y al electrodo (111) de apantallamiento del cátodo (104) conmutable o modulable, - un terminal (131) de salida de la SCCO se conecta al electrodo (110) de base entre el emisor de efecto de campo y el sustrato (112), - el potencial del terminal (131) de salida está adaptado para ser superior o igual al potencial del terminal (132) de entrada, el electrodo (111) de apantallamiento está adaptado para disminuir el campo eléctrico inducido por el ánodo (106) en el emisor (105), - el electrodo (111) de apantallamiento está ubicado en un plano P que comprende la superficie (105p) conductora situada debajo del pie del emisor de efecto (105) de campo o ubicado bajo este mismo plano, existe una zona (115) eléctricamente aislante entre el electrodo de apantallamiento y esta superficie conductora.High energy electron source adapted to be controlled by an electromagnetic wave comprising a vacuum enclosure (101), a switchable or modulable cathode (104) based on field effect emitters (105) comprising at least one electrode (111 ) shielding, at least one field effect emitter (105) connected to a base electrode (110) arranged on a substrate (112), an anode (106) grounded, a high voltage supply (103), said high voltage supply (103) being adapted to provide a potential to create a sufficient anode field to induce the emission from the field effect emitter (105), at least one control circuit (109) for a current source adapted to be controlled by an electromagnetic wave (120) called SCCO connected to said switchable or modulable cathode (104) characterized in that: - the SCCO (120) is disposed outside the vacuum enclosure, - an input terminal (132) of the SCCO it is connected to the high voltage supply and to the switching electrode (111) of the cathode (104) switchable or modulable, - an output terminal (131) of the SCCO is connected to the base electrode (110) between the emitter of effect field and substrate (112), - the potential of the output terminal (131) is adapted to be greater than or equal to the potential of the input terminal (132), the shielding electrode (111) is adapted to decrease the electric field induced by the anode (106) in the emitter (105), - the shielding electrode (111) is located in a plane P comprising the conductive surface (105p) located under the foot of the field effect emitter (105) or located under this same plane, there is an electrically insulating zone (115) between the shielding electrode and this conductive surface.

ES15820149T 2014-12-23 2015-12-22 CNT-based high energy electron source with remote electromagnetic wave control element Active ES2721017T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1402973A FR3030873B1 (en) 2014-12-23 2014-12-23 HIGH ENERGY ELECTRON SOURCE BASED ON NANOTUBES / CARBON NANOFIBERS WITH ELETROMAGNETIC WAVE CONTROL ELEMENT DEPORTEE
PCT/EP2015/080990 WO2016102575A1 (en) 2014-12-23 2015-12-22 High-energy electron source made from cnt with offset electromagnetic wave control element

Publications (1)

Publication Number Publication Date
ES2721017T3 true ES2721017T3 (en) 2019-07-26

Family

ID=53008567

Family Applications (1)

Application Number Title Priority Date Filing Date
ES15820149T Active ES2721017T3 (en) 2014-12-23 2015-12-22 CNT-based high energy electron source with remote electromagnetic wave control element

Country Status (4)

Country Link
EP (1) EP3238225B1 (en)
ES (1) ES2721017T3 (en)
FR (1) FR3030873B1 (en)
WO (1) WO2016102575A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3053830A1 (en) 2016-07-07 2018-01-12 Thales VACUUM CATHODE ELECTRONIC TUBE BASED ON NANOTUBES OR NANOWIAS
CN111082792A (en) * 2019-12-29 2020-04-28 中国工程物理研究院流体物理研究所 Light-operated semiconductor switch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7085352B2 (en) * 2004-06-30 2006-08-01 General Electric Company Electron emitter assembly and method for generating electron beams
FR2879342B1 (en) * 2004-12-15 2008-09-26 Thales Sa FIELD EMISSION CATHODE WITH OPTICAL CONTROL
DE102007046278A1 (en) * 2007-09-27 2009-04-09 Siemens Ag X-ray tube with transmission anode
FR2926924B1 (en) * 2008-01-25 2012-10-12 Thales Sa RADIOGENIC SOURCE COMPRISING AT LEAST ONE ELECTRON SOURCE ASSOCIATED WITH A PHOTOELECTRIC CONTROL DEVICE

Also Published As

Publication number Publication date
EP3238225A1 (en) 2017-11-01
EP3238225B1 (en) 2019-01-30
WO2016102575A1 (en) 2016-06-30
FR3030873A1 (en) 2016-06-24
FR3030873B1 (en) 2017-01-20

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