GB776576A - Improvements in apparatus for detecting radioactivity - Google Patents
Improvements in apparatus for detecting radioactivityInfo
- Publication number
- GB776576A GB776576A GB12191/55A GB1219155A GB776576A GB 776576 A GB776576 A GB 776576A GB 12191/55 A GB12191/55 A GB 12191/55A GB 1219155 A GB1219155 A GB 1219155A GB 776576 A GB776576 A GB 776576A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitor
- potential
- radioactivity
- potential difference
- electrometer
- 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
- 239000003990 capacitor Substances 0.000 abstract 4
- 238000009413 insulation Methods 0.000 abstract 1
- 229910052754 neon Inorganic materials 0.000 abstract 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/14—Electrostatic dosimeters
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
776,576. Radioactivity detectors. FRANCAIS, ETAT. April 27, 1955 [May 7, 1954], No. 12191/55. Class 40 (3). An apparatus for detecting radioactivity which includes an ionization chamber 1, or any other device including at least two electrodes 1, 2 between which is maintained a potential difference which varies under the effect of radioactivity and detecting means, such as an electrometer 4 which is responsive to variations in said potential difference, i.e. characterized in that the potential difference between the electrodes is obtained by a high insulation capacitor r and in that the apparatus includes portable means, such as the magneto G for recharging at intervals of time the capacitor r to a potential higher than that which is critical for operation of the ionization chamber. The circuit for the instrument shown includes a voltage-stabilizing device comprising neon tubes 7 and a strongly insulated reference capacitor C so that by operation of the switch 13 and push-button 11, disposed as in Fig. 4, it is possible, through the action of resistors 3 and 31 to verify if the correct potential has been applied to the capacitor C, if the resistor 3 and the opposing torque of the electrometer have not varied, and if it is necessary to recharge the system, on the potential Ul dropping below the critical value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR776576X | 1954-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB776576A true GB776576A (en) | 1957-06-12 |
Family
ID=9201082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12191/55A Expired GB776576A (en) | 1954-05-07 | 1955-04-27 | Improvements in apparatus for detecting radioactivity |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB776576A (en) |
-
1955
- 1955-04-27 GB GB12191/55A patent/GB776576A/en not_active Expired
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