GB895759A - Improvements in or relating to fission chambers - Google Patents
Improvements in or relating to fission chambersInfo
- Publication number
- GB895759A GB895759A GB42307/59A GB4230759A GB895759A GB 895759 A GB895759 A GB 895759A GB 42307/59 A GB42307/59 A GB 42307/59A GB 4230759 A GB4230759 A GB 4230759A GB 895759 A GB895759 A GB 895759A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- electrode
- chamber
- discs
- xenon
- 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
- H01J47/12—Neutron detector tubes, e.g. BF3 tubes
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
-
- 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)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
895,759. Detecting neutrons; discharge apparatus. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 24, 1960 [Dec. 11, 1959], No. 42307/59. Classes 39(1) and 39(4). A fission chamber for use at high temperatures comprising a tube having a chamber region at one end and a support region extending away from the chamber region, a central electrode insulatedly mounted within the chamber region, a connecting wire extending from the electrode supported d coaxially within the support region, a layer of fissile material adjacent the chamber volume formed between electrode and tube within the chamber region, the construction being such as to permit the flow of gas between the chamber and support regions of the tube, is characterized in that the tube is filled with a gas comprising xenon. The gas may be xenon alone at a pressure of 3.5 atmospheres at room temperature, or may be a mixture of xenon and argon. In Fig. 1 the outer tube 1 is crimped at 2 to form an internal stop for locating an alumina disc 3 having a central hole through which projects one end of a central electrode 4; the other end of electrode 4 is located in a hole in alumina disc 6, and a nickel cylinder 8 coated internally with uranium 235 spaces apart the discs 3 and 6. The region between discs 3 and 6 forms the fission chamber, the remainder of thet tube forming a support extending outside the core of the reactor in which the apparatus is used and enclosing a connecting wire 10 one end of which is welded to electrode 4 and the other end of which is supported by a spring 15 from a lead-in wire. Threaded on the wire 10 are a plurality of alumina tubes 11 which space apart alumina locating discs 12; discs 12 and discs 3 and 6 are provided with slots to facilitate evacuation and filling of the tube through a sealable copper pipe 21. The tube 1, electrode 4 and wire 10 are all made of 80% nickel/ 20% chrome alloy to withstand high temperatures. It is a characteristic of fission chambers that there is a plateau in the curves of count rate against gas pressure; with a xenon filling the plateau is narrower but at a lower gas presure than with argon. A mixture of argon and xenon can be used to provide plateau characteristics intermediate in pressure and length between those of the two gases.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL258756D NL258756A (en) | 1959-12-11 | ||
| GB42307/59A GB895759A (en) | 1959-12-11 | 1959-12-11 | Improvements in or relating to fission chambers |
| FR846191A FR1275737A (en) | 1959-12-11 | 1960-12-07 | Fission chamber |
| CH1380860A CH387818A (en) | 1959-12-11 | 1960-12-09 | Control device for nuclear reactors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB42307/59A GB895759A (en) | 1959-12-11 | 1959-12-11 | Improvements in or relating to fission chambers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895759A true GB895759A (en) | 1962-05-09 |
Family
ID=10423856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB42307/59A Expired GB895759A (en) | 1959-12-11 | 1959-12-11 | Improvements in or relating to fission chambers |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH387818A (en) |
| GB (1) | GB895759A (en) |
| NL (1) | NL258756A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446500A (en) * | 2021-12-21 | 2022-05-06 | 中国原子能科学研究院 | High-temperature fission chamber |
-
0
- NL NL258756D patent/NL258756A/xx unknown
-
1959
- 1959-12-11 GB GB42307/59A patent/GB895759A/en not_active Expired
-
1960
- 1960-12-09 CH CH1380860A patent/CH387818A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446500A (en) * | 2021-12-21 | 2022-05-06 | 中国原子能科学研究院 | High-temperature fission chamber |
| CN114446500B (en) * | 2021-12-21 | 2024-01-16 | 中国原子能科学研究院 | High-temperature cracking chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| NL258756A (en) | |
| CH387818A (en) | 1965-02-15 |
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