GB862379A - Improvements in or relating to neutron detectors - Google Patents
Improvements in or relating to neutron detectorsInfo
- Publication number
- GB862379A GB862379A GB37546/58A GB3754658A GB862379A GB 862379 A GB862379 A GB 862379A GB 37546/58 A GB37546/58 A GB 37546/58A GB 3754658 A GB3754658 A GB 3754658A GB 862379 A GB862379 A GB 862379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detector
- reflector
- reactor
- neutron
- surrounded
- 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
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000006096 absorbing agent Substances 0.000 abstract 2
- 230000005251 gamma ray Effects 0.000 abstract 2
- 229910002804 graphite Inorganic materials 0.000 abstract 2
- 239000010439 graphite Substances 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 229910052790 beryllium Inorganic materials 0.000 abstract 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000012188 paraffin wax Substances 0.000 abstract 1
- -1 polyethylene Polymers 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
- G01T3/02—Measuring neutron radiation by shielding other radiation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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
862,379. Neutron detectors. SlEMENSSCHUCKERTWERKE A.G. Nov. 21, 1958 [Nov. 22, 1957], No. 37546/58. Class 39(4). Neutron detecting apparatus for use in a nuclear reactor comprises a neutron detector shielded from gamma rays and disposed in association with a moderator substance of large diffusion length for slowing down neutrons, with a reflector substance disposed adjacent the moderator, and with a neutron absorber disposed adjacent the reflector. In Fig. 1 the detector 1 bears against a gamma ray absorbing plate 5, for example of bismuth, attached to the wall 6 of the reactor, and is embedded in a moderator 2, for example heavy water, carbon, or beryllium, surrounded by a reflector layer 3, for example water, paraffin, or polyethylene, and a neutron absorbing layer 4 which may be a coating of boron. A plug 7 at the rear of the detector is provided with passages to allow electrical connections to pass through to the detector and allows the detector to be changed. In a modification, Fig. 3 (not shown), the layers 2, 3 and 4 completely surround the detector 1. In a further modification, Fig. 5 (not shown), a number of detectors are each surrounded by layers 2 and 3 and are surrounded by a common layer 4 which is surrounded by a further layer, for example of iron, which absorbs both neutrons and gamma rays. The number of detectable neutrons can be increased by reducing the thickness of the wall of the reactor or by reducing the thickness of the reflector of the reactor in the vicinity of the detector. If the reflector of the reactor is of graphite, the graphite may be omitted near the wall where detectors are to be placed, Fig. 4 (not shown); if the reflector is heavy water, means may be provided for displacing heavy water in the vicinity of the detectors when measurements are to be made. In another arrangement, Fig. 2, the reactor is provided with a re-entrant tube 9 in which is placed the detector 1, surrounded by a gamma ray shield 5, a moderator 2, and a reflector 3 covered by a neutron absorber 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE862379X | 1957-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB862379A true GB862379A (en) | 1961-03-08 |
Family
ID=6798035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37546/58A Expired GB862379A (en) | 1957-11-22 | 1958-11-21 | Improvements in or relating to neutron detectors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB862379A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2299443A (en) * | 1995-02-24 | 1996-10-02 | Western Atlas Int Inc | Epithermal neutron detector |
| GB2375221A (en) * | 2001-04-26 | 2002-11-06 | Bnfl | Neutron detectors |
-
1958
- 1958-11-21 GB GB37546/58A patent/GB862379A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2299443A (en) * | 1995-02-24 | 1996-10-02 | Western Atlas Int Inc | Epithermal neutron detector |
| NL1002438C2 (en) * | 1995-02-24 | 1999-03-12 | Western Atlas Int | Epithermal neutron detector with improved efficiency. |
| GB2299443B (en) * | 1995-02-24 | 1999-07-21 | Western Atlas Int Inc | Epithermal neutron detector |
| GB2375221A (en) * | 2001-04-26 | 2002-11-06 | Bnfl | Neutron detectors |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2853624A (en) | Radiation shielding device | |
| ES465869A1 (en) | Instrumentation assembly for nuclear reactor | |
| GB1018541A (en) | Nuclear reactor | |
| US3050624A (en) | Neutron-flux gage for nuclear reactors | |
| US2967937A (en) | Method and apparatus for measuring thickness | |
| GB862379A (en) | Improvements in or relating to neutron detectors | |
| Balestrini et al. | Two specialized delayed-neutron detector designs for assays of fissionable elements in water and sediment samples | |
| GB938159A (en) | Improved nuclear reactor system | |
| US3832563A (en) | Apparatus for storing and processing fissionable substances | |
| GB817752A (en) | Nuclear chain reacting systems | |
| GB882031A (en) | Improvements relating to radiation shielding for nuclear equipment | |
| GB1156342A (en) | Testing for Fuel Element Sheathing Failures in Nuclear Reactors | |
| GB859209A (en) | Improvements in or relating to nuclear reactors | |
| Clifford et al. | EXPERIMENTAL INVESTIGATION OF NEUTRON STREAMING THROUGH THE GRID-PLATE SHIELD OF THE FAST FLUX TEST FACILITY. | |
| GB1124584A (en) | Improvements in or relating to radiographic examinations using neutrons | |
| CN208367221U (en) | A kind of nuclear radiation shield bracket used on transporting belt | |
| GB1548868A (en) | Interface detection by neutron scatterng | |
| Block et al. | Neutron dose measurements by an attenuation technique | |
| GB836147A (en) | Improvements in or relating to shielding for nuclear reactors | |
| GB1495175A (en) | Device for measuring neutron-flux distribution density | |
| Agu et al. | Self-powered neutron detectors for measuring epithermal neutron flux | |
| GB1197099A (en) | Method and device for the Non-Destructive Control of Nuclear Fuels | |
| GB1131406A (en) | Epithermal neutron well logging | |
| Kobayashi et al. | Measurements of Streaming Neutrons on Nuclear Ship “Mutsu” by a Two-Detector-Method | |
| GB917776A (en) | Method of measuring the amount of material fissile by thermal neutrons and present in any arbitrary substance, particularly for controlling the state of exhaustion of fuel elements in nuclear reactors |