GB977827A - Improvements in or relating to electron multipliers - Google Patents
Improvements in or relating to electron multipliersInfo
- 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
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.
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)
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)
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 |
-
0
- NL NL261009D patent/NL261009A/xx unknown
-
1960
- 1960-02-09 FR FR817921A patent/FR1256575A/en not_active Expired
-
1961
- 1961-02-01 LU LU39723D patent/LU39723A1/xx unknown
- 1961-02-01 BE BE599752A patent/BE599752A/en unknown
- 1961-02-08 DE DEC23366A patent/DE1133043B/en active Pending
- 1961-02-09 GB GB492061A patent/GB977827A/en not_active Expired
Cited By (2)
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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