GB1090745A - Flow counter for measurement of radioactive materials - Google Patents
Flow counter for measurement of radioactive materialsInfo
- Publication number
- GB1090745A GB1090745A GB949265A GB949265A GB1090745A GB 1090745 A GB1090745 A GB 1090745A GB 949265 A GB949265 A GB 949265A GB 949265 A GB949265 A GB 949265A GB 1090745 A GB1090745 A GB 1090745A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- external field
- conductive
- march
- radio
- 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
- 238000005259 measurement Methods 0.000 title 1
- 239000012857 radioactive material Substances 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- 230000002285 radioactive effect Effects 0.000 abstract 2
- KNIUHBNRWZGIQQ-UHFFFAOYSA-N 7-diethoxyphosphinothioyloxy-4-methylchromen-2-one Chemical compound CC1=CC(=O)OC2=CC(OP(=S)(OCC)OCC)=CC=C21 KNIUHBNRWZGIQQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000011835 investigation Methods 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
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
- H01J47/02—Ionisation chambers
-
- 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
- H01J47/06—Proportional counter tubes
Landscapes
- Measurement Of Radiation (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
1,090,745. Ionization counters. FARBENFABRIKEN BAYER A.G. March 5, 1965 [March 7, 1964; Nov. 24, 1964], No. 9492/65. Heading H1D. [Also in Division G1] An external field is established in the vicinity of an open entrance 8 of a flow counter comprising a counting wire 3 maintained at a positive potential with respect to the wall of a chamber 2 to prevent positive ions from the chamber reaching a radio-active source 11 under investigation and to prevent externally produced secondary electrons from entering the chamber. The chamber 2 is formed in a metal block cathode 1 containing methane gas supply conduits 4, 5 and 6. The aperture 8 is a slot in a metal plate 7. The radio-active source 11 is supported by a conductive or non-conductive mounting material 9 on an electrode 10, and the external field is produced by applying a voltage U s between electrode 10 and cathode 1. In alternative arrangements the voltage is applied between two apertured conductive plates (14 and 15), Figs. 2 and 3 (not shown), separated by an insulating layer (16), or between two sets of inter-digitated wires (27 and 28), Figs. 4 and 5 (not shown), attached to bars (23 and 24) separated by insulating material (22) from an apertured conductive plate (20). The sensitivity of the counter can be varied by varying the external field or by switching it on and off, thus enabling the count rate of each component of a mixture of #-emitting isotopes, e.g. <SP>3</SP>H and <SP>14</SP>C, to be determined.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF42243A DE1212646B (en) | 1964-03-07 | 1964-03-07 | Windowless counter tube for determining radioactive substances |
| DE1964F0044512 DE1301863B (en) | 1964-03-07 | 1964-11-24 | Process for achieving a high and stable count when measuring poorly conducting radioactive preparations using a windowless counter tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1090745A true GB1090745A (en) | 1967-11-15 |
Family
ID=25976155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB949265A Expired GB1090745A (en) | 1964-03-07 | 1965-03-05 | Flow counter for measurement of radioactive materials |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1301863B (en) |
| GB (1) | GB1090745A (en) |
| NL (1) | NL6502865A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2337155A (en) * | 1998-05-08 | 1999-11-10 | British Nuclear Fuels Plc | Ionisation detector, e.g. for alpha radiation |
| GB2337154A (en) * | 1998-05-08 | 1999-11-10 | British Nuclear Fuels Plc | Ionisation detector, e.g. for alpha radiation |
| US6717153B2 (en) | 2000-11-08 | 2004-04-06 | British Nuclear Fuels Plc | Apparatus and methods for monitoring emissions |
| US7649183B2 (en) | 2004-12-01 | 2010-01-19 | Vt Nuclear Services Limited | Apparatus for monitoring an item for radioactive material on or associated with the item |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1212646B (en) * | 1964-03-07 | 1966-03-17 | Bayer Ag | Windowless counter tube for determining radioactive substances |
-
1964
- 1964-11-24 DE DE1964F0044512 patent/DE1301863B/en active Pending
-
1965
- 1965-03-05 GB GB949265A patent/GB1090745A/en not_active Expired
- 1965-03-05 NL NL6502865A patent/NL6502865A/xx unknown
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2337155A (en) * | 1998-05-08 | 1999-11-10 | British Nuclear Fuels Plc | Ionisation detector, e.g. for alpha radiation |
| GB2337154A (en) * | 1998-05-08 | 1999-11-10 | British Nuclear Fuels Plc | Ionisation detector, e.g. for alpha radiation |
| GB2337154B (en) * | 1998-05-08 | 2003-01-15 | British Nuclear Fuels Plc | Improvements in and relating to monitoring |
| GB2337155B (en) * | 1998-05-08 | 2003-01-22 | British Nuclear Fuels Plc | Improvements in and relating to ion monitoring |
| US6649916B2 (en) | 1998-05-08 | 2003-11-18 | British Nuclear Fuels Plc | Ion monitoring |
| US6822238B2 (en) | 1998-05-08 | 2004-11-23 | British Nuclear Fuels Plc | Monitoring |
| US6717153B2 (en) | 2000-11-08 | 2004-04-06 | British Nuclear Fuels Plc | Apparatus and methods for monitoring emissions |
| US7649183B2 (en) | 2004-12-01 | 2010-01-19 | Vt Nuclear Services Limited | Apparatus for monitoring an item for radioactive material on or associated with the item |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1301863B (en) | 1969-11-20 |
| NL6502865A (en) | 1965-09-08 |
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