GB1252364A - - Google Patents
Info
- Publication number
- GB1252364A GB1252364A GB1252364DA GB1252364A GB 1252364 A GB1252364 A GB 1252364A GB 1252364D A GB1252364D A GB 1252364DA GB 1252364 A GB1252364 A GB 1252364A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- spark
- grid
- condition
- feb
- 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
- H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
- H01J47/10—Spark counters
Landscapes
- Luminescent Compositions (AREA)
- Electron Tubes For Measurement (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
1,252,364. Recording tracks of particles. COMMISSARIAT A L'ENERGIE ATOMIQUE. 12 Feb., 1969 [26 Feb., 1968], No. 7670/69. Addition to 1,133,682. Heading G6P. An image of a radio-active source is obtained by localizing the emitted beta particles and X and gamma ray photons, in a gas filled spark chamber. Organic vapour is added to the gas and this is progressively destroyed as the sparks are generated, so limiting the life of the chamber. To limit the dead time of the chamber and increase its life, an external spark quench and control circuit is provided. The control circuit may be designed to cause the chamber to operate in either the spark discharge or electronavalanche condition. In the spark condition, the signal developed at the spark chamber grid is amplified at two avalanche-connected transistors and applied to the grid of a tetrode coupled across the spark chamber to function as a short circuit. Where the spark chamber functions in the avalanche condition the grid signal is amplified before application to the short circuiting arrangement in an amplifier incorporating a wide pass-band, low noise field effect transistor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR40031A FR1465531A (en) | 1965-11-27 | 1965-11-27 | Spark control device for spark chamber |
| FR51234A FR89644E (en) | 1965-11-27 | 1966-02-25 | Spark control device for spark chamber |
| FR141316A FR95138E (en) | 1965-11-27 | 1968-02-26 | Spark control device for spark chamber. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1252364A true GB1252364A (en) | 1971-11-03 |
Family
ID=27242746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1252364D Expired GB1252364A (en) | 1965-11-27 | 1969-02-12 |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE728525A (en) |
| CH (1) | CH518003A (en) |
| DE (1) | DE1908864A1 (en) |
| ES (1) | ES364054A2 (en) |
| FR (1) | FR95138E (en) |
| GB (1) | GB1252364A (en) |
| IL (1) | IL31629A0 (en) |
| LU (1) | LU58075A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6013475B2 (en) * | 1979-06-26 | 1985-04-08 | 名古屋大学長 | Method for highly stable operation of composite spark chamber |
| DE3624720C2 (en) * | 1986-07-22 | 1997-05-28 | Gok Gmbh & Co Kg | Gas pressure regulator with two diaphragm-controlled valve devices |
-
1968
- 1968-02-26 FR FR141316A patent/FR95138E/en not_active Expired
-
1969
- 1969-02-05 CH CH177769A patent/CH518003A/en unknown
- 1969-02-12 GB GB1252364D patent/GB1252364A/en not_active Expired
- 1969-02-14 IL IL31629A patent/IL31629A0/en unknown
- 1969-02-17 BE BE728525D patent/BE728525A/xx unknown
- 1969-02-21 DE DE19691908864 patent/DE1908864A1/en active Pending
- 1969-02-24 LU LU58075D patent/LU58075A1/xx unknown
- 1969-02-25 ES ES364054A patent/ES364054A2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE728525A (en) | 1969-08-01 |
| FR95138E (en) | 1970-07-24 |
| IL31629A0 (en) | 1969-07-30 |
| ES364054A2 (en) | 1971-01-01 |
| DE1908864A1 (en) | 1970-09-10 |
| LU58075A1 (en) | 1969-06-03 |
| CH518003A (en) | 1972-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |