GB500447A - Improvements in or relating to electron discharge apparatus of the electron multiplier type - Google Patents

Improvements in or relating to electron discharge apparatus of the electron multiplier type

Info

Publication number
GB500447A
GB500447A GB31090/37A GB3109037A GB500447A GB 500447 A GB500447 A GB 500447A GB 31090/37 A GB31090/37 A GB 31090/37A GB 3109037 A GB3109037 A GB 3109037A GB 500447 A GB500447 A GB 500447A
Authority
GB
United Kingdom
Prior art keywords
electrodes
tube
channel
cathodes
anode
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
Application number
GB31090/37A
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Publication of GB500447A publication Critical patent/GB500447A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/20—Dynodes consisting of sheet material, e.g. plane, bent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • 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
    • H01J43/18—Electrode arrangements using essentially more than one dynode

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Discharge Lamp (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • X-Ray Techniques (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Microwave Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Lasers (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

500,447. Electron multipliers; magnets. ELECTRICAL RESEARCH PRODUCTS, Inc. Nov. 12, 1937, No. 31090. Convention date, Nov. 20, 1936. [Class 39 (i)] [Also in Group XXXV] In an electron multiplier of the " hop-along " type the secondarily-emissive electrodes are of a U- or V-shaped cross-section and are arranged to form an open channel, i.e. no other part of the structure extends over the surface of the channel. The secondarily-emissive electrodes 122<1> ... 122<9> may also be formed with bulged or dished central portions 125 of substantially V-shaped outline convexly curved towards the cathode. The side arms of the channel &c. are bent back to form flanges 124 which grip insulating supports 116, formed with slots between the cathodes, and supported on cross pieces 115 carried by rods fixed ,to rings clamped to the tube stem. The anode 120 may be of similar channel form and provided with a mesh screen electrode 121, or these may be plane electrodes arranged perpendicularly to the axis of the tube. The leading-in conductors pass through a flange 112 on the tube stem, and the tube is adjustably held in clips between the arms of a permanent magnet, which is composed of a member of separate horse-shoe magnets 135 clamped together and provided with poles having chamfered edges or if a field which increases towards the anode is required the magnet poles 136 may be inclined to the tube axis. The secondary emitting substance is provided on the wall forming the bottom of the channel and this face may be parallel to or incline slightly to the tube axis. In the bulged form shown, the convex surface of the bulge is rendered secondary emitting. When the secondary cathodes are of V-shape, the inner surfaces are rendered secondary emitting and the anodes are formed of triangular shape and arranged at right-angles to the tube axis. The primary electrodes may be photoelectric or thermionic and provided with a control grid. Both surfaces of the electrodes may be secondary emitting and two anodes may be provided, one for each act of cathode surfaces. The anode and the adjacent electrodes are supplied direct from separate sources but a, potentiometer is used for the remaining cathodes. The cathodes may be of silver or copper, oxidized and caesiated. Specification 493,714 is referred to.
GB31090/37A 1936-11-20 1937-11-12 Improvements in or relating to electron discharge apparatus of the electron multiplier type Expired GB500447A (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US111808A US2160796A (en) 1936-11-20 1936-11-20 Electron discharge apparatus
US111810A US2160798A (en) 1936-11-20 1936-11-20 Electron discharge apparatus
US111796A US2134718A (en) 1936-11-20 1936-11-20 Electron discharge apparatus
US111809A US2160797A (en) 1936-11-20 1936-11-20 Electron discharge apparatus
US160997A US2236041A (en) 1936-11-20 1937-08-26 Electron discharge device
US161747A US2160799A (en) 1936-11-20 1937-08-31 Electron discharge device
US176566A US2245605A (en) 1936-11-20 1937-11-26 Electron multiplier
US205931A US2245624A (en) 1936-11-20 1938-05-04 Electron discharge apparatus

Publications (1)

Publication Number Publication Date
GB500447A true GB500447A (en) 1939-02-09

Family

ID=22644877

Family Applications (6)

Application Number Title Priority Date Filing Date
GB31091/37A Expired GB500448A (en) 1936-11-20 1937-11-12 Improvements in or relating to electron discharge apparatus of the electron multiplier type
GB31090/37A Expired GB500447A (en) 1936-11-20 1937-11-12 Improvements in or relating to electron discharge apparatus of the electron multiplier type
GB31885/37A Expired GB505663A (en) 1936-11-20 1937-11-19 Improvements in or relating to electron discharge apparatus of the electron multiplier type
GB20896/38A Expired GB500170A (en) 1936-11-20 1938-07-14 Improvements in or relating to electron discharge devices utilising secondary emission and electrode structures therefor
GB21222/38A Expired GB502528A (en) 1936-11-20 1938-07-18 Improvements in or relating to electron discharge devices utilising secondary emission
GB33529/38A Expired GB521077A (en) 1936-11-20 1938-11-18 Improvements in or relating to electron discharge devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB31091/37A Expired GB500448A (en) 1936-11-20 1937-11-12 Improvements in or relating to electron discharge apparatus of the electron multiplier type

Family Applications After (4)

Application Number Title Priority Date Filing Date
GB31885/37A Expired GB505663A (en) 1936-11-20 1937-11-19 Improvements in or relating to electron discharge apparatus of the electron multiplier type
GB20896/38A Expired GB500170A (en) 1936-11-20 1938-07-14 Improvements in or relating to electron discharge devices utilising secondary emission and electrode structures therefor
GB21222/38A Expired GB502528A (en) 1936-11-20 1938-07-18 Improvements in or relating to electron discharge devices utilising secondary emission
GB33529/38A Expired GB521077A (en) 1936-11-20 1938-11-18 Improvements in or relating to electron discharge devices

Country Status (7)

Country Link
US (8) US2160797A (en)
BE (1) BE431298A (en)
CH (2) CH208067A (en)
DE (1) DE886343C (en)
FR (3) FR824648A (en)
GB (6) GB500448A (en)
NL (1) NL49799C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010194B (en) * 1954-02-25 1957-06-13 Bendix Aviat Corp Secondary electron multiplier

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865161C (en) * 1940-01-20 1953-01-29 Sueddeutsche Telefon App Arrangement for modulating one or more main carrier frequencies with two or more modulated auxiliary carrier frequencies
US2433724A (en) * 1944-05-29 1947-12-30 Farnsworth Res Corp Phototube multiplier
US2451400A (en) * 1944-09-09 1948-10-12 Oran T Mcilvaine Photoelectric tube
US2585044A (en) * 1945-02-05 1952-02-12 Farnsworth Res Corp Gain control apparatus
US2582141A (en) * 1946-09-16 1952-01-08 Bendix Aviat Corp Sonic tube
US2627044A (en) * 1948-06-23 1953-01-27 Continental Electric Company Cathode for photocells
US2760097A (en) * 1950-12-22 1956-08-21 Westinghouse Electric Corp Cathode structures
US2953703A (en) * 1954-06-14 1960-09-20 Westinghouse Electric Corp Photomultiplier design having high response to x-rays
US2903595A (en) * 1954-12-24 1959-09-08 Rca Corp Electron multiplier
US2826704A (en) * 1955-01-03 1958-03-11 Bendix Aviat Corp Magnetic electron multiplier gate
NL104002C (en) * 1955-06-11
US2932768A (en) * 1955-10-21 1960-04-12 Bendix Aviat Corp Magnetic electron multiplier
US2909689A (en) * 1955-09-12 1959-10-20 Gen Electric Support strap for electron gun structures
US2897391A (en) * 1957-04-02 1959-07-28 George B Erskine Studded electrode and method of manufacture
NL120346C (en) * 1957-07-06
CH358872A (en) * 1958-07-11 1961-12-15 Zeiss Jena Veb Carl Secondary electron multiplier
GB892454A (en) * 1959-05-21 1962-03-28 Bush And Rank Cintel Ltd Improvements in or relating to electron multipliers
US2950408A (en) * 1959-10-30 1960-08-23 Hughes Aircraft Co Multi-gap collimation lens for use in direct-view storage tube
US3191086A (en) * 1960-11-23 1965-06-22 Radames K H Gebel Secondary emission multiplier intensifier image orthicon
FR1313827A (en) * 1961-11-03 1963-01-04 Philips Brasil Manufacturing process of elements in the form of louvers, applicable to the production of dynodes of photomultipliers
US3390272A (en) * 1965-03-31 1968-06-25 Sylvania Electric Prod Photomultiplier
US3519870A (en) * 1967-05-18 1970-07-07 Xerox Corp Spiraled strip material having parallel grooves forming plurality of electron multiplier channels
US3506868A (en) * 1967-05-22 1970-04-14 Bendix Corp Positive-type electron multiplier channels connected in series
US3538328A (en) * 1968-03-04 1970-11-03 Varian Associates Scintillation-type ion detector employing a secondary emitter target surrounding the ion path
GB1470162A (en) * 1973-02-27 1977-04-14 Emi Ltd Electron multiplying arrangements
US3875441A (en) * 1973-11-29 1975-04-01 Rca Corp Electron discharge device including an electron emissive electrode having an undulating cross-sectional contour
US3944867A (en) * 1974-03-15 1976-03-16 Zenith Radio Corporation Shadow mask having ribs bounding rectangular apertures
US4184098A (en) * 1976-04-22 1980-01-15 S.R.C. Laboratories, Inc. Cone type dynode for photomultiplier tube
US4143291A (en) * 1976-04-22 1979-03-06 S.R.C. Laboratories, Inc. Dynode for a photomultiplier tube
FR2445018A1 (en) * 1978-12-22 1980-07-18 Anvar ELECTRON MULTIPLIER TUBE WITH AXIAL MAGNETIC FIELD
DE2904696A1 (en) * 1979-02-08 1980-08-21 Proxitronic Funk Gmbh & Co Kg PHOTOELECTRONIC MULTIPLIER
WO1983000772A1 (en) * 1981-08-25 1983-03-03 Swingler, Donald, Lloyd Electron multiplier
US4446401A (en) * 1981-11-20 1984-05-01 Rca Corporation Photomultiplier tube having improved count-rate stability
US4415832A (en) * 1981-11-20 1983-11-15 Rca Corporation Electron multiplier having an improved planar utlimate dynode and planar anode structure for a photomultiplier tube
US5656807A (en) * 1995-09-22 1997-08-12 Packard; Lyle E. 360 degrees surround photon detector/electron multiplier with cylindrical photocathode defining an internal detection chamber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010194B (en) * 1954-02-25 1957-06-13 Bendix Aviat Corp Secondary electron multiplier

Also Published As

Publication number Publication date
CH208067A (en) 1939-12-31
FR824648A (en) 1938-02-14
FR49655E (en) 1939-05-30
GB500170A (en) 1939-02-03
US2160796A (en) 1939-05-30
FR49980E (en) 1939-09-29
US2134718A (en) 1938-11-01
US2160799A (en) 1939-05-30
GB521077A (en) 1940-05-10
US2245624A (en) 1941-06-17
GB502528A (en) 1939-03-20
DE886343C (en) 1953-08-13
BE431298A (en) 1939-01-31
US2160798A (en) 1939-05-30
GB505663A (en) 1939-05-16
CH214485A (en) 1941-04-30
GB500448A (en) 1939-02-09
US2160797A (en) 1939-05-30
US2236041A (en) 1941-03-25
NL49799C (en) 1941-01-15
US2245605A (en) 1941-06-17

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