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US2280449A - Electron multiplier - Google Patents

Electron multiplier Download PDF

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Publication number
US2280449A
US2280449A US287187A US28718739A US2280449A US 2280449 A US2280449 A US 2280449A US 287187 A US287187 A US 287187A US 28718739 A US28718739 A US 28718739A US 2280449 A US2280449 A US 2280449A
Authority
US
United States
Prior art keywords
electron multiplier
electron
base
leads
electrodes
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
US287187A
Other languages
English (en)
Inventor
Pietzsch Herbert
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US2280449A publication Critical patent/US2280449A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J43/28—Vessels, e.g. wall of the tube; Windows; Screens; Suppressing undesired discharges or currents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors

Definitions

  • Fig. 1 shows a side view of the electron multiplier tube
  • Fig. 2 shows a view of the base of the tube of Fig. 1.
  • the invention proposes that the afore-mentioned numerous control leads be regularly arranged on the circumference of concentric circles. Since in the future the efficiency of an electron multiplier will depend upon how well the base leads are insulated, it is obvious that the distance between two or more leads will be increased by employing a plurality of concentric circles to dispose the leads in the design of a base.
  • the glass envelope I is shown to include a large number of electrodes 2, 3 to H.
  • the latter are fine-mesh grids held in place by the glass rods A and B.
  • Each of these electrodes is fed by a corresponding lead wire Z2 to Z! I, which is led externally to the front end or base of the enclosing vessel.
  • Two concentric circles, as mentioned above for arranging the control wires, are illustrated in two separate stages of a cup-shaped base on the left side of the figure. It is naturally possible to employ more of said concentric stages in different levels when a larger number of control leads necessitates it.
  • a multi-element electron discharge tube including a vessel having a throat portion, an electrode system in said vessel and lead-in conductors to the various electrodes of said electrode system, the base end of said throat portion being formed with a series of successively smaller concentric integral cup-shaped portions, presenting generally radially extending annular surfaces, said lead-in conductors passing through said radially extending annular surfaces.

Landscapes

  • Electron Tubes For Measurement (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Cold Cathode And The Manufacture (AREA)
US287187A 1938-08-03 1939-07-29 Electron multiplier Expired - Lifetime US2280449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE531780X 1938-08-03

Publications (1)

Publication Number Publication Date
US2280449A true US2280449A (en) 1942-04-21

Family

ID=6555137

Family Applications (1)

Application Number Title Priority Date Filing Date
US287187A Expired - Lifetime US2280449A (en) 1938-08-03 1939-07-29 Electron multiplier

Country Status (3)

Country Link
US (1) US2280449A (xx)
GB (1) GB531780A (xx)
NL (1) NL52940C (xx)

Also Published As

Publication number Publication date
NL52940C (xx)
GB531780A (en) 1941-01-10

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