Theta-pinch, or θ-pinch, is a type of fusion power reactor design. The name refers to the configuration of currents used to confine the plasma fuel in...
37 KB (5,480 words) - 17:22, 17 July 2025
Screw pinch – A combination of a Z-pinch and theta pinch (also called a stabilized Z-pinch, or θ-Z pinch) Reversed field pinch or toroidal pinch – This...
39 KB (4,614 words) - 21:12, 13 June 2025
pinch (after Willard Harrison Bennett), but the introduction of the θ-pinch (theta pinch) concept led to the need for clearer, more precise terminology. The...
14 KB (1,740 words) - 09:19, 31 May 2024
The FRC was first observed in laboratories in the late 1950s during theta pinch experiments with a reversed background magnetic field. The original idea...
32 KB (2,914 words) - 05:08, 8 July 2025
Fusion power (section Magnetic or electric pinches)
in the theta direction. This induces a magnetic field running down the center of the plasma, as opposed to around it. The early theta-pinch device Scylla...
220 KB (22,889 words) - 10:13, 25 July 2025
the wall. However, the theta-pinch failed to reach the high-energy conditions needed for fusion, and most work on theta-pinch had ended by the 1970s....
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thesis, An Investigation Of Anomalous Scattering Of Laser Radiation By A Theta-pinch Plasma, in 1977. Ng was a postdoctoral researcher at University of Alberta...
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List of fusion experiments (section Toroidal Z-pinch)
25 MA, predecessor to the first tokamak (1955, USSR) Trisops – 2 facing theta-pinch guns FF-2B, Lawrenceville Plasma Physics, United States Levitated Dipole...
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working fusion reactor. 1939 Peter Thonemann develops a detailed plan for a pinch device, but is told to do other work for his thesis. Hans Bethe publishes...
64 KB (7,451 words) - 05:26, 15 July 2025
Perhapsatron (section Z-pinch)
Z-pinch devices had largely ended, although some research continued on the related theta-pinch concept. Tuck never restricted himself to the pinch concept...
9 KB (1,192 words) - 02:43, 16 March 2025
Magnetic confinement fusion (section Z-pinch)
fired two theta-pinch rings towards each other.) Some more novel configurations produced in toroidal machines are the reversed field pinch and the Levitated...
43 KB (4,491 words) - 10:03, 30 June 2025
the public was given its first fusion demonstration. The device was a Theta-pinch from General Electric. This was similar to the Scylla machine developed...
88 KB (9,719 words) - 23:39, 17 July 2025
could operate. However, the LSX used a method of forming FRCs called a theta-pinch, which does not allow FRCs to be further sustained and heated. The US...
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2022-01-12. Benford, J. N. (1970). "Rotation in the Implosion Phase of a Theta Pinch" (Ph.D. dissertation). University of California at San Diego: 1. {{cite...
25 KB (2,276 words) - 05:25, 12 July 2025
the LSX experiment formed FRCs in a power-hungry, violent way called a theta-pinch. The US Department of Energy funded the Translation Confinement Sustainment...
8 KB (1,016 words) - 10:33, 12 December 2023
1, 1960). "Evidence for the Containment of a Hot, Dense Plasma in a Theta Pinch". Physical Review Letters. 5 (7): 297–300. doi:10.1103/PhysRevLett.5...
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plasma with a null toroid, firstly, is generally produced by prolate-theta-pinches with the necessarily existing field condition where the field magnetic...
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they had recently constructed for a larger pinch machine, in July 1958 they also suggested building a theta pinch system they called a thetatron. Harwell...
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{\begin{aligned}x(\theta ,\varphi )&=(R+r\cos \theta )\cos {\varphi }\\y(\theta ,\varphi )&=(R+r\cos \theta )\sin {\varphi }\\z(\theta ,\varphi )&=r\sin \theta \cos...
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Squeeze theorem (redirect from Pinching theorem)
^{2}\theta \,\Delta \theta }{2}}\leq {\frac {\tan(\theta +\Delta \theta )-\tan \theta }{2}}\leq {\frac {\sec ^{2}(\theta +\Delta \theta )\,\Delta \theta }{2}}}...
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of Fluids 20.8 (1977): 1289–1295. Weitzner, Harold. "End loss from a theta pinch." The Physics of Fluids 20.3 (1977): 384–389. Weitzner, Harold, and Donald...
12 KB (1,569 words) - 05:28, 29 January 2025
{\displaystyle x=r^{2}\cos \theta \cos \varphi \sin \varphi } y = r 2 sin θ cos φ sin φ {\displaystyle y=r^{2}\sin \theta \cos \varphi \sin \varphi...
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experiments and many later devices. The liner was driven inward through the theta pinch process, using a 50 kJ capacitor bank. A.E. Robson and P.J. Turchi joined...
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tokamaks grew larger. The two most successful designs at that time were the theta pinch and mirrors. Hirsch's assistant, Stephen O. Dean, visited LLNL and told...
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Nucleonics and Radiation Branch. His team of scientists used advanced theta-pinch techniques to harness fusion reactions. In 1955, a year after Fortune...
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ZETA (fusion reactor) (section Pinch concept)
experiment in the early history of fusion power research. Based on the pinch plasma confinement technique, and built at the Atomic Energy Research Establishment...
76 KB (10,162 words) - 19:41, 20 July 2025
Krall and Alvin Trivelpiece, McGraw-Hill, 1973 "Effect of turbulence on theta pinch modeling by hybrid numerical models" HAMASAKI, S; KRALL, NA, Laboratory...
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z^{2}}}\right]{\hat {\mathbf {e} }}_{\theta }.\end{aligned}}} The nature of the equilibrium, whether it be a tokamak, reversed field pinch, etc. is largely determined...
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{\displaystyle ds^{2}=-c^{2}\,dt^{2}+d\ell ^{2}+(k^{2}+\ell ^{2})(d\theta ^{2}+\sin ^{2}\theta \,d\varphi ^{2}),} first presented by Ellis (see Ellis wormhole)...
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Martin David Kruskal and Vitaly Shafranov, who noticed that the plasma in pinch effect reactors would be stable if q was larger than 1. Macroscopically...
8 KB (1,274 words) - 04:10, 5 April 2025