DE1144405B - Electron beam tubes with magnetic focusing means outside and inside the vacuum space, in particular klystron or traveling wave tubes - Google Patents

Electron beam tubes with magnetic focusing means outside and inside the vacuum space, in particular klystron or traveling wave tubes

Info

Publication number
DE1144405B
DE1144405B DE1960N0018750 DEN0018750A DE1144405B DE 1144405 B DE1144405 B DE 1144405B DE 1960N0018750 DE1960N0018750 DE 1960N0018750 DE N0018750 A DEN0018750 A DE N0018750A DE 1144405 B DE1144405 B DE 1144405B
Authority
DE
Germany
Prior art keywords
cathode
vacuum space
ray tube
tubes
klystron
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.)
Pending
Application number
DE1960N0018750
Other languages
German (de)
Inventor
Bernard Thomas Murphy
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of DE1144405B publication Critical patent/DE1144405B/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/02Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02Electrodes; Magnetic control means; Screens
    • H01J23/04Cathodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02Electrodes; Magnetic control means; Screens
    • H01J23/06Electron or ion guns
    • H01J23/065Electron or ion guns producing a solid cylindrical beam
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02Electrodes; Magnetic control means; Screens
    • H01J23/08Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087Magnetic focusing arrangements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02Electron guns
    • H01J3/029Schematic arrangements for beam forming

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Heat Treatment Of Articles (AREA)

Description

INTERNAT.KL. HOIjINTERNAT.KL. HOIj

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

N18750 Vmc/21gN18750 Vmc / 21g

ANMELDETAG: 9. AUGUST 1960REGISTRATION DATE: AUGUST 9, 1960

BEKANNTMACHUNG DER ANMELDUNG UNDAUSGABEDER AUSLEGESCHRIFT: 28. F E B R U A R 1963NOTICE THE REGISTRATION ANDOUTPUTE EDITORIAL: 28. F E B R U A R 1963

Die Erfindung bezieht sich auf eine Elektronenstrahlröhre, insbesondere ein Klystron oder eine Wanderwellenröhre, mit einer Kathode, welche aus einer Kathodenhülle mit einer Elektronen emittierenden Oberfläche und einem Heizelement besteht, und mit magnetischen Fokussierungsmitteln außerhalb und innerhalb des Vakuumraumes.The invention relates to a cathode ray tube, in particular a klystron or a traveling wave tube, with a cathode consisting of a Cathode shell with an electron-emitting surface and a heating element consists, and with magnetic focusing means outside and inside the vacuum space.

Es ist bekannt, zur Fokussierung des Elektronenstrahles einer Elektronenstrahlröhre außerhalb und innerhalb des Vakuumraumes ferromagnetische Teile anzuordnen. Die Erfindung bezweckt, derartige Fokussierungssysteme dahingehend weiterzubilden, daß die Homogenität des Magnetfeldes, insbesondere in der Nähe des Elektronenerzeugungssystems, verbessert wird.It is known to focus the electron beam of a cathode ray tube outside and to arrange ferromagnetic parts within the vacuum space. The invention aims to provide such focusing systems to the effect that the homogeneity of the magnetic field, especially in the vicinity of the electron generation system is improved.

Diese Verbesserung ist dadurch erreicht, daß gemäß der Erfindung das innerhalb des Vakuumraumes angeordnete magnetische Fokussierungssystem aus einem innerhalb der Kathodenhülle und einem außerhalb der Kathodenhülle angeordneten ferromagnetisehen Element besteht.This improvement is achieved in that, according to the invention, that within the vacuum space arranged magnetic focusing system from one inside the cathode shell and one outside the cathode shell arranged ferromagnetic element consists.

An Hand der Fig. 1 und 2 werden Ausführungsbeispiele einer beschriebenen Röhre näher erläutert. Exemplary embodiments of a tube described are explained in more detail with reference to FIGS. 1 and 2.

Nach Fig. 1 enthält der Kolben 1 einer Elektronenstrahlröhre eine Kathode, die aus einer Kathodenhülle 2 und einer Emissionsfläche 3 besteht, welche Fläche auf übliche Weise mit Elektronen emittierendem Material überzogen ist. Innerhalb der Kathode 2 ist ein Heizelement? angeordnet, das zum Erhitzen der die Elektronen emittierenden Oberfläche 3 dient.According to Fig. 1, the bulb 1 of a cathode ray tube contains a cathode consisting of a cathode envelope 2 and an emission surface 3 consists, which surface in the usual way with electron-emitting Material is coated. Inside the cathode 2 is a heating element? arranged that for heating which the electron-emitting surface 3 is used.

Neben dem Heizelement 7 auf der von der Emissionsfläche 3 abgewendeten Seite ist ein ferromagnetischer Teil 5 angeordnet. Der Teil 5 hat die Gestalt einer Scheibe, die einigermaßen schüsseiförmig entsprechend der Emissionsfläche 3 gestaltet sein kann. Das ferromagnetische Element 5 wird aus einer Legierung mit weichmagnetischen Eigenschaften hergestellt. Next to the heating element 7 on the from the emission surface 3 facing away from a ferromagnetic part 5 is arranged. Part 5 has the shape a disk that can be configured somewhat bowl-shaped corresponding to the emission surface 3. The ferromagnetic element 5 is made of an alloy with soft magnetic properties.

Das ferromagnetische Element 5 trägt wesentlich zum Erzeugen eines Magnetfeldes der erforderlichen Gestalt bei, wenn es erwünscht ist, das Elektronenbündel mittels eines außerhalb der Röhre angeordneten Magnetsystems 6, 8 zu fokussieren. Ein solches System ist z. B. in Wanderwellenröhren üblich.The ferromagnetic element 5 contributes significantly to generating a magnetic field of the required If desired, shape the electron beam by means of a device arranged outside the tube Magnet system 6, 8 to focus. Such a system is e.g. B. common in traveling wave tubes.

Eine mit einem solchen ferromagnetischen EIement 5 versehene Kathode 2, 3 wird in einer Röhre verwendet, in der weiter noch mindestens ein ferromagnetisches Element 4 angebracht ist innerhalb des Röhrenkolbens 1, aber außerhalb der Kathodenhülle 2. In Fig. 1 ist die allgemein übliche Stelle eines solchen Elementes durch 4 angedeutet. Es wird einleuchten, daß bei der dargestellten Bauart das EIe-Elektronenstrahlröhre mit magnetischen Fokussierungsmitteln außerhalb und innerhalb des Vakuumraumes, insbesondere Klystron oder Wanderwellenröhre A cathode 2, 3 provided with such a ferromagnetic element 5 is placed in a tube used, in which at least one ferromagnetic element 4 is also attached within the Tubular envelope 1, but outside of the cathode envelope 2. In Fig. 1, the common location is one such element indicated by 4. It will be evident that the EIe cathode ray tube in the type shown with magnetic focusing means outside and inside the vacuum space, in particular klystron or traveling wave tube

Anmelder:Applicant:

N. V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande)N. V. Philips' Gloeilampenfabrieken, Eindhoven (Netherlands)

Vertreter: Dr. rer. nat. P. Roßbach, Patentanwalt, Hamburg 1, Mönckebergstr. 7Representative: Dr. rer. nat. P. Roßbach, patent attorney, Hamburg 1, Mönckebergstr. 7th

Beanspruchte Priorität: Großbritannien vom 12. August 1959 (Nr. 27 587)Claimed priority: Great Britain dated August 12, 1959 (No. 27 587)

Bernard Thomas Murphy, Pittsburg, Pa. (V. St. A.), ist als Erfinder genannt wordenBernard Thomas Murphy, Pittsburg, Pa. (V. St. A.), has been named as the inventor

ment 4 und das Element 5 einen Teil eines ferromagnetischen Systems bildet, das auf die Elektronen der Kathode eine fokussierende Wirkung ausübt.ment 4 and the element 5 forms part of a ferromagnetic system that acts on the electrons of the Cathode has a focusing effect.

In der in Fig. 2 veranschaulichten Ausführungsform sind die Orte des Heizelementes 7 und des ferromagnetischen Elementes 5 umgetauscht, so daß das ferromagnetische Element 5 näher der Emissionsfläche 3 und das Heizelement 7 auf der von der Emissionsfläche 3 abgewendeten Seite des Elementes 5 liegt.In the embodiment illustrated in Figure 2, the locations of the heating element 7 and the ferromagnetic one Element 5 exchanged so that the ferromagnetic element 5 closer to the emission surface 3 and the heating element 7 on the side of the element 5 facing away from the emission surface 3 lies.

Das Magnetsystem 8, 4, 5 und 6 ist derart angeordnet, daß die magnetischen Kraftlinien 11 eine Fokussierungswirkung auf die Elektronen ausüben, in Zusammenwirkung mit der Gestalt der Emissionsfläche 3, mit der auf einem niedrigen Potential gehaltenen Elektrode 9 und mit der auf einem hohen positiven Potential gehaltenen Anode 10. Der enge Hals des Kolbens 1 kann sich an einen schraubenlinienförmigen Verzögerungsleiter anschließen, der in Fig. 2 nicht weiter veranschaulicht ist.The magnet system 8, 4, 5 and 6 is arranged in such a way that the magnetic lines of force 11 have a focusing effect exert on the electrons, in cooperation with the shape of the emission surface 3, with electrode 9 held at a low potential and with that at a high positive Potential held anode 10. The narrow neck of the piston 1 can be on a helical Connect delay conductor, which is not further illustrated in FIG.

Es ist ersichtlich, daß das Material des Elementes 5 derart gewählt werden muß, daß die ferromagneti-It can be seen that the material of the element 5 must be chosen so that the ferromagnetic

309 537/290309 537/290

sehen Eigenschaften bei der Betriebstemperatur des Elementes aufrechterhalten werden.see properties are maintained at the operating temperature of the element.

Claims (5)

PATENTANSPRÜCHE:PATENT CLAIMS: 1. Elektronenstrahlröhre, insbesondere Klystron oder Wanderwellenröhre, mit einer Kathode, welche aus einer Kathodenhülle mit einer Elektronen emittierenden Oberfläche und einem Heizelement besteht, und mit magnetischen Fokussierungsmitteln außerhalb und innerhalb des Vakuumraumes, dadurch gekennzeichnet, daß das innerhalb des Vakuumraumes angeordnete magnetische Fokussierungssystem aus einem innerhalb der Kathodenhülle (2) und einem außerhalb der Kathodenhülle (2) angeordneten ferromagnetischen Element (5, 4) besteht.1. Cathode ray tube, in particular klystron or traveling wave tube, with a cathode which consists of a cathode shell with an electron-emitting surface and a heating element, and with magnetic focusing means outside and inside the vacuum space, characterized in that the magnetic focusing system arranged within the vacuum space consists of a inside the cathode shell (2) and a ferromagnetic element (5, 4) arranged outside the cathode shell (2). 2. Elektronenstrahlröhre nach Anspruch 1, dadurch gekennzeichnet, daß das ferromagnetische Element (5) zwischen der emittierenden Oberfläche (3) und dem Heizelement (7) der Kathode angeordnet ist (Fig. 1).2. Cathode ray tube according to claim 1, characterized in that the ferromagnetic Element (5) between the emitting surface (3) and the heating element (7) of the cathode is arranged (Fig. 1). 3. Elektronenstrahlröhre nach Anspruch 1, dadurch gekennzeichnet, daß das ferromagnetische Element (5) von der emittierenden Oberfläche (3) der Kathode aus gesehen hinter dem Heizelement (7) angeordnet ist (Fig. 2).3. Cathode ray tube according to claim 1, characterized in that the ferromagnetic Element (5) behind the heating element as seen from the emitting surface (3) of the cathode (7) is arranged (Fig. 2). 4. Elektronenstrahlröhre nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß das innerhalb der Kathodenhülle angeordnete ferromagnetische Element scheibenförmig ausgebildet ist.4. Cathode ray tube according to claim 1, 2 or 3, characterized in that the inside the cathode shell arranged ferromagnetic element is disc-shaped. 5. Elektronenstrahlröhre nach Anspruch 4, dadurch gekennzeichnet, daß bei Verwendung einer Kathode mit gewölbter Emissionsfläche das ferromagnetische Element entsprechend der Emissionsfläche der Kathode gewölbt ausgebildet ist.5. cathode ray tube according to claim 4, characterized in that when using a Cathode with curved emission surface the ferromagnetic element corresponding to the emission surface the cathode is curved. In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 746 498;
deutsche Auslegeschrift Nr. 1 047 326;
österreichische Patentschrift Nr. 137 264;
schweizerische Patentschriften Nr. 219 503,
221451.
Considered publications:
German Patent No. 746 498;
German interpretative document No. 1 047 326;
Austrian Patent No. 137 264;
Swiss patents No. 219 503,
221451.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DE1960N0018750 1930-07-02 1960-08-09 Electron beam tubes with magnetic focusing means outside and inside the vacuum space, in particular klystron or traveling wave tubes Pending DE1144405B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2010530A GB353222A (en) 1930-07-02 1930-07-02 Improved manufacture of spring blades or leaves for laminated springs

Publications (1)

Publication Number Publication Date
DE1144405B true DE1144405B (en) 1963-02-28

Family

ID=10140458

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1960N0018750 Pending DE1144405B (en) 1930-07-02 1960-08-09 Electron beam tubes with magnetic focusing means outside and inside the vacuum space, in particular klystron or traveling wave tubes

Country Status (3)

Country Link
DE (1) DE1144405B (en)
GB (1) GB353222A (en)
NL (1) NL254372A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1916608A1 (en) * 1968-04-12 1969-11-06 Varian Associates Microwave tubes
FR2641899A1 (en) * 1989-01-17 1990-07-20 Thomson Tubes Electroniques ELECTRON GUN WITH AN ACTIVE DEVICE PRODUCING A MAGNETIC FIELD IN THE VICINITY OF THE CATHODE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT137264B (en) * 1933-04-14 1934-04-25 Lignose Hoerfilm System Breusi Equipment on discharge vessels with a unidirectional electron beam.
CH219503A (en) * 1940-07-03 1942-02-15 Philips Nv Electric discharge tube with a directed electron beam.
CH221451A (en) * 1940-11-30 1942-05-31 Lorenz C Ag Cathode ray tube with directly heated cathode.
DE746498C (en) * 1940-11-30 1944-12-23 Directly heated helical cathode for cathode ray tubes
DE1047326B (en) * 1953-02-07 1958-12-24 Emi Ltd Arrangement for holding the solenoid-type burner of an indirectly heated, cylindrical cathode of a magnetron tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT137264B (en) * 1933-04-14 1934-04-25 Lignose Hoerfilm System Breusi Equipment on discharge vessels with a unidirectional electron beam.
CH219503A (en) * 1940-07-03 1942-02-15 Philips Nv Electric discharge tube with a directed electron beam.
CH221451A (en) * 1940-11-30 1942-05-31 Lorenz C Ag Cathode ray tube with directly heated cathode.
DE746498C (en) * 1940-11-30 1944-12-23 Directly heated helical cathode for cathode ray tubes
DE1047326B (en) * 1953-02-07 1958-12-24 Emi Ltd Arrangement for holding the solenoid-type burner of an indirectly heated, cylindrical cathode of a magnetron tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1916608A1 (en) * 1968-04-12 1969-11-06 Varian Associates Microwave tubes
FR2641899A1 (en) * 1989-01-17 1990-07-20 Thomson Tubes Electroniques ELECTRON GUN WITH AN ACTIVE DEVICE PRODUCING A MAGNETIC FIELD IN THE VICINITY OF THE CATHODE
EP0379403A1 (en) * 1989-01-17 1990-07-25 Thomson Tubes Electroniques Electron gun comprising a device producing a magnetic field in the proximity of the cathode
US5109179A (en) * 1989-01-17 1992-04-28 Thomson Tubes Electroniques Electron gun provided with a device producing a magnetic field in the neighborhood of a cathode

Also Published As

Publication number Publication date
GB353222A (en) 1931-07-23
NL254372A (en)

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