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US2216267A - Electron multiplier - Google Patents

Electron multiplier Download PDF

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Publication number
US2216267A
US2216267A US205842A US20584238A US2216267A US 2216267 A US2216267 A US 2216267A US 205842 A US205842 A US 205842A US 20584238 A US20584238 A US 20584238A US 2216267 A US2216267 A US 2216267A
Authority
US
United States
Prior art keywords
electron
wall
receptacle
electrodes
electrons
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.)
Expired - Lifetime
Application number
US205842A
Other languages
English (en)
Inventor
Flechsig Werner
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.)
FIRM FERNSEH AKTIEN GES
FIRM FERNSEH AKTIEN-GESELLSCHAFT
Original Assignee
FIRM FERNSEH AKTIEN GES
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 FIRM FERNSEH AKTIEN GES filed Critical FIRM FERNSEH AKTIEN GES
Application granted granted Critical
Publication of US2216267A publication Critical patent/US2216267A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/08—Cathode arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/28—Vessels, e.g. wall of the tube; Windows; Screens; Suppressing undesired discharges or currents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil

Definitions

  • Fig. 1 is a longitudinal sectional View of an electron multiplier of the type described in which an embodiment of the present invention is incorporated.
  • Fig. 2 is also a longitudinal sectional view of a multiplier in which an embodiment of the present invention is incorporated.
  • Multipliers of the type mentioned consisting of a series of foraminated secondary-emitting electrodes, such as, for instance, wire-mesh grids,
  • the invention provides for dividing the interiorof the vacuum receptacle into several chambers partially separated from each other by means to be described below.
  • As 5 it is necessary toblock the path for carriers of negative as well as of positive charges, an electrostatic blocking potential cannot be used.
  • the separation of the above-mentioned chambers must, therefore, be mechanical.
  • a 10 wall consisting of insulating material will be used to separate the individual chambers from each other, this wall possessing an aperture covered by a foraminated secondary-emitting electrode, by means of which the electron stream is allowed to 15 pass from one chamber to the other. Ions as well as electrons can then pass only through the foraminations of these electrodes from one chamher into another, all other paths being blocked.
  • the first foraminated electrode following the con- 20 trol grid can then be used as an ion collector.
  • a tube is shown which is divided in the above-described manner into two chambers.
  • the control of the emission takes place in one chamber, while amplification by secondary emission takes place in the other.
  • the tube l includes an indirectly heated cathode 2, and a control grid 3.
  • Secondary-emitting grids 4 are located in the chamber separated from the control-grid space by glass ring 5, which is fused to the Wall of the vacuum receptacle.
  • two separating walls are provided. At one end is a photoelectric cathode 2 upon which a light beam of undulating intensity may be incident.
  • Two glass rings 5 are fused to the wall of the vacuum receptacle l. The ring closer to the anode possesses a greater inner diameter than that on the side of the cathode, in order to leave suflicient space for introducing electrodes in the construction of the tube.
  • the separating wall can be constructed in various ways.
  • certain or all secondary-emitting electrodes it is also possible to allow certain or all secondary-emitting electrodes to extend to the walls of the vacuum receptacle and into close contact along the entire periphery of each electrode so that there is no longer a free space between electrode and glass wall through which ions or electrons may travel. It is important only that electrons and ions can travel from one chamber to another only through the foraminations in the emitting electrodes because all other paths, particularly that along the walls of the tube, are blocked.
  • Electron multiplier comprising a vacuum receptacle, an electron source, a plurality of foraminated secondary emissive electrodes supported transversely of said receptacle with their edges in spaced relationship to the Wall of said receptacle, and a collector electrode, said vacuum receptacle having a partition of insulating ma,- terial between said source of electrons and said secondary emissive electrodes andextending inwardly from the wall of said receptacle a distance at least equal to the space separation of the edges of said electrodes from said Wall.
  • An electron discharge device comprising an envelope, a cathode, an electron multiplier grid, a collector electrode, said grid being positioned between said cathode and said collector electrode with the edges of said grid in spaced relation to the inner Walls of said envelope, and a ring of insulating material extending inwardly from the inner Walls of said envelope past the outer edgesof said grid and forming with said grid a partition dividing said envelope into two chambers, one chamber containing said cathode and one containing said collector electrode.
  • An electron discharge device comprising an envelope, a cathode, a. plurality of electron multiplier grids, a collector electrode, said grids being positioned between said cathode and said collector electrode with the, edges of each grid in spaced relation to the inner walls plurality of rings of insulating material extending inwardly from the inner walls of said envelope past the outer edges of respective ones of said grids and forming with said grids partitions dividing the interior of said envelope into a plurality of chambers, one of said chambers containing said cathode and another of said chambers containing said collector electrode.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electron Tubes For Measurement (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US205842A 1937-05-04 1938-05-03 Electron multiplier Expired - Lifetime US2216267A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEF4463D DE889657C (de) 1937-05-04 1937-05-04 Sekundaerelektronenverstaerker
DEF4678D DE901569C (de) 1937-05-04 1938-02-19 Photozelle mit Sekundaerelektronenverstaerker
GB13174/38A GB514335A (en) 1937-05-04 1938-05-03 Improvements in or relating to electron multipliers

Publications (1)

Publication Number Publication Date
US2216267A true US2216267A (en) 1940-10-01

Family

ID=32073732

Family Applications (1)

Application Number Title Priority Date Filing Date
US205842A Expired - Lifetime US2216267A (en) 1937-05-04 1938-05-03 Electron multiplier

Country Status (6)

Country Link
US (1) US2216267A (de)
BE (1) BE427837A (de)
DE (3) DE889657C (de)
FR (1) FR837484A (de)
GB (1) GB514335A (de)
NL (1) NL59576C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983845A (en) * 1959-05-07 1961-05-09 Bendix Corp Electron multiplier spurious noise baffle

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750071C (de) * 1939-06-21 1944-12-12 Verfahren zur Herstellung von Elektronenvervielfachern mit Elektroden verschiedenen Sekundaeremissionsgrades
GB745811A (en) * 1951-03-27 1956-03-07 Emi Ltd Improvements relating to electron multipliers
DE1087721B (de) * 1953-11-09 1960-08-25 Siemens Ag Albis Bildwandlerroehre
US4006376A (en) * 1975-02-28 1977-02-01 Rca Corporation Phototube having improved electron collection efficiency

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983845A (en) * 1959-05-07 1961-05-09 Bendix Corp Electron multiplier spurious noise baffle

Also Published As

Publication number Publication date
GB514335A (en) 1939-11-06
DE907097C (de) 1954-03-22
DE889657C (de) 1953-09-14
BE427837A (de) 1938-05-31
FR837484A (fr) 1939-02-10
NL59576C (de) 1947-07-15
DE901569C (de) 1954-01-11

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