GB977827A - Improvements in or relating to electron multipliers - Google Patents

Improvements in or relating to electron multipliers

Info

Publication number
GB977827A
GB977827A GB492061A GB492061A GB977827A GB 977827 A GB977827 A GB 977827A GB 492061 A GB492061 A GB 492061A GB 492061 A GB492061 A GB 492061A GB 977827 A GB977827 A GB 977827A
Authority
GB
United Kingdom
Prior art keywords
dynodes
anode
output current
potential
circuits
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
GB492061A
Inventor
Etienne Picard
Andre Sala
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB977827A publication Critical patent/GB977827A/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
    • H01J43/30—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/20—Measuring radiation intensity with scintillation detectors
    • G01T1/208—Circuits specially adapted for scintillation detectors, e.g. for the photo-multiplier section
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
    • G01T1/40—Stabilisation of spectrometers

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Electronic Switches (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Pyrrole Compounds (AREA)
  • Measurement Of Radiation (AREA)

Abstract

977,827. Photo-multiplier circuits. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb. 9, 1961 [Feb. 9, 1960], No. 4920/61. Heading G1A. [Also in Division H3] The gain of an electron multiplier tube is controlled by switching circuits which, when the output current exceeds a certain value, operate to strap a number of the dynodes and the anode to a point of reduced potential. As shown in Fig. 1, a first rise in output current results in relays B14 S1 operating to connect dynodes D10, D11 and anode A to point 10 on the potential divider network r 0 .... r 11 . Further increases in output current result in other relay circuits operating to strap more dynodes to the anode, and to connect these strapped electrodes to lower potential points on the potential divider chain r o .... r 11 . A modified circuit, Fig. 2 (not shown) includes a differential relay which makes one pair of contacts when the current through it exceeds 100 microamps and another pair when the current through it is less than 10 microamps.
GB492061A 1960-02-09 1961-02-09 Improvements in or relating to electron multipliers Expired GB977827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR817921A FR1256575A (en) 1960-02-09 1960-02-09 Device for automatic control of the potentials of the electrodes of a photomultiplier

Publications (1)

Publication Number Publication Date
GB977827A true GB977827A (en) 1964-12-16

Family

ID=8724918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB492061A Expired GB977827A (en) 1960-02-09 1961-02-09 Improvements in or relating to electron multipliers

Country Status (6)

Country Link
BE (1) BE599752A (en)
DE (1) DE1133043B (en)
FR (1) FR1256575A (en)
GB (1) GB977827A (en)
LU (1) LU39723A1 (en)
NL (1) NL261009A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066763A1 (en) * 1981-05-26 1982-12-15 General Electric Company Device for automatic amplification control of a gamma camera
US4649269A (en) * 1984-03-09 1987-03-10 Siemens Gammasonics, Inc. Dynodes arrangement for an electron multiplier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE881400C (en) * 1939-08-21 1953-06-29 Bosch Gmbh Robert Switching arrangement for electron multiplier
DE920803C (en) * 1941-12-18 1954-11-29 Bosch Gmbh Robert Switching arrangement for electron multiplier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066763A1 (en) * 1981-05-26 1982-12-15 General Electric Company Device for automatic amplification control of a gamma camera
US4649269A (en) * 1984-03-09 1987-03-10 Siemens Gammasonics, Inc. Dynodes arrangement for an electron multiplier

Also Published As

Publication number Publication date
NL261009A (en)
FR1256575A (en) 1961-03-24
BE599752A (en) 1961-05-29
LU39723A1 (en) 1961-04-01
DE1133043B (en) 1962-07-12

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