GB854246A - Improvements in or relating to gas discharge apparatus - Google Patents
Improvements in or relating to gas discharge apparatusInfo
- Publication number
- GB854246A GB854246A GB31855/57A GB3185557A GB854246A GB 854246 A GB854246 A GB 854246A GB 31855/57 A GB31855/57 A GB 31855/57A GB 3185557 A GB3185557 A GB 3185557A GB 854246 A GB854246 A GB 854246A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge
- switch
- energising
- fired
- circuit
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
- H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/02—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma
- H05H1/04—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma using magnetic fields substantially generated by the discharge in the plasma
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/02—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma
- H05H1/20—Ohmic heating
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Plasma Technology (AREA)
Abstract
854,246. Nuclear fusion reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 9, 1958 [Oct. 11, 1957 ; Dec. 6, 1957], Nos. 31855/57 and 38098/57. Class 39(4). [Also in Group XL(c)] A gas discharge apparatus wherein a high current ring discharge is induced in gas in a vessel by the application of a short highvoltage pulse from a first energising circuit to a primary winding of a pulse transformer whereof the discharge forms the secondary winding, is characterised in that there is provided a second energising circuit adapted to produce a relatively low voltage output of relatively long duration and means for coupling the second energising circuit to the secondary winding in order to maintain the discharge current at a high value for a prolonged period when the high-voltage pulse has fallen to a low value. In the arrangement shown in Fig. 1 the pulse transformer T 1 energising the discharge has five primary windings fed in parallel from five identical energising circuits, of which only that energising the primary winding L 8 is shown in detail. Each of these circuits comprises a capacitor C 5 which is charged from a source 3 through a resistance R 6 and a high vacuum switch S 8 and is shorted by a safety switch S 10 and a resistance. Capacitor C 6 can discharge through winding L 8 through ignitron H 1 ; a second ignitron H 2 is connected between the cathode of H 1 and earth, and a capacitor C 7 and a mechanical switch S 7 are connected between the anode of H 1 and earth. A protective resistance R 7 damps any oscillations produced by the accidental breakdown of H 2 . Return connections from the five primary windings of T 1 are taken through the five secondary windings of transformer T 2 . The primary winding of T 2 is connected through a mechanical switch S 6 to a delay line comprising five capacitors, each provided with a safety shorting switch and resistances, and form inductances, ignitrons H 3 and H 4 being connected across the beginning and end of the line. The line can be charged from a source 16 through a switch S 9 and resistance R 9 . In operation, after the line and capacitor C 6 have been charged switch S 6 is closed and about 2 milliseconds later H 1 is fired to allow C 6 to discharge. When the current has reached its peak value and the voltage on C 6 has dropped almost to zero, H 2 is fired, shorting out C 6 to prevent the voltage across it reversing. About 2 milliseconds later switch S 7 is closed so that the current passes through it instead of through H 1 and H 2 . The peak current is now mantained for the time taken by the delay line to complete its discharge, after which H 4 is fired. Switches S 6 and S 7 are controlled by a timing unit 6 controlled by a master timer 7 which operates the charging switches S 8 and S 9 . H 2 is fired by a control circuit 8 tripped from potentiometer R 11 , and H 4 is fired by a similar control circuit. H 3 is provided to prevent the voltage on the delay line reversing and is fired by a similar control circuit. Capacitor C 7 is provided so that the firing of one of the five ignitrons H 1 will not prevent the others from firing. The repetition period of the discharges is variable between 50 and 150 seconds, and to keep the reactor conditioned between discharges a series of smaller discharges of a period of about 10 seconds may be induced by a lower energy energising circuit 15 feeding on additional primary winding on T 1 . The transformer Tz can be omitted by stowing the maintaining charge at low voltage in larger capacitors or by using a homopolar generator or other device giving a high current at low voltage. The build-up circuit and maintaining circuit could be arranged in parallel with respect to the primary winding of T 1 instead of in series. Specification 830,252 is referred to.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL109864D NL109864C (en) | 1957-10-11 | ||
BE571937D BE571937A (en) | 1957-10-11 | ||
NL232098D NL232098A (en) | 1957-10-11 | ||
GB31855/57A GB854246A (en) | 1957-10-11 | 1957-10-11 | Improvements in or relating to gas discharge apparatus |
US766124A US3105027A (en) | 1957-10-11 | 1958-10-08 | Gas discharge apparatus |
FR1211151D FR1211151A (en) | 1957-10-11 | 1958-10-10 | Fusion reactors |
DEU5662A DE1079233B (en) | 1957-10-11 | 1958-10-11 | Circuit arrangement for generating high current ring discharges in a gas-filled reaction chamber |
CH6494058A CH373110A (en) | 1957-10-11 | 1958-10-11 | Circuit arrangement for generating high current ring discharges in a gas-filled ring chamber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB31855/57A GB854246A (en) | 1957-10-11 | 1957-10-11 | Improvements in or relating to gas discharge apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB854246A true GB854246A (en) | 1960-11-16 |
Family
ID=10329402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31855/57A Expired GB854246A (en) | 1957-10-11 | 1957-10-11 | Improvements in or relating to gas discharge apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US3105027A (en) |
BE (1) | BE571937A (en) |
DE (1) | DE1079233B (en) |
FR (1) | FR1211151A (en) |
GB (1) | GB854246A (en) |
NL (2) | NL232098A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3290219A (en) * | 1963-09-19 | 1966-12-06 | Gen Electric | Plasma containment method and apparatus |
US4494043A (en) * | 1981-07-02 | 1985-01-15 | Physics International Company | Imploding plasma device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE508699A (en) * | 1951-01-26 | |||
US3016342A (en) * | 1957-08-29 | 1962-01-09 | Kruskal Martin | Controlled nuclear fusion reactor |
-
0
- NL NL109864D patent/NL109864C/xx active
- NL NL232098D patent/NL232098A/xx unknown
- BE BE571937D patent/BE571937A/xx unknown
-
1957
- 1957-10-11 GB GB31855/57A patent/GB854246A/en not_active Expired
-
1958
- 1958-10-08 US US766124A patent/US3105027A/en not_active Expired - Lifetime
- 1958-10-10 FR FR1211151D patent/FR1211151A/en not_active Expired
- 1958-10-11 DE DEU5662A patent/DE1079233B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
BE571937A (en) | |
FR1211151A (en) | 1960-03-14 |
NL109864C (en) | |
DE1079233B (en) | 1960-04-07 |
NL232098A (en) | |
US3105027A (en) | 1963-09-24 |
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