en>Yobot: WP:CHECKWIKI error fixes using AWB (8976)

2013-03-15T10:12:11Z

WP:CHECKWIKI error fixes using AWB (8976)

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	~~Wilber Berryhill~~ is the ~~name~~ free ~~psychic readings~~ - [~~http:~~//~~www~~.~~zavodpm~~.~~ru/blogs/glennmusserrvji/14565~~-~~great~~-~~hobby-advice-assist-allow-you-get-going zavodpm~~.~~ru]~~, ~~his mothers~~ and ~~fathers gave him and he completely digs~~ that ~~title~~. ~~Distributing production has been his occupation for some~~ time. ~~It's not~~ a ~~common factor but what she likes doing is~~ to ~~perform domino but she doesn't have~~ the time ~~recently~~. ~~love psychic~~ ([http://~~www~~.~~youronlinepublishers~~.~~com~~/~~authWiki~~/~~AdolphvhBladenqq http:~~//~~www~~.~~youronlinepublishers~~.~~com]~~) ~~Her family members lives in Ohio but her spouse desires them to move~~.~~<br><br>Also visit my page -~~ [http://~~alles-herunterladen~~.de/~~excellent-advice-for-picking-the-ideal-hobby~~/ ~~spirit messages~~]		'''Trisops''' was an experimental machine for the study of [[Magnetic confinement fusion\|magnetic confinement]] of [[Plasma (physics)\|plasmas]] with the ultimate goal of producing [[fusion power]]. The configuration was a variation of a [[Magnetic confinement fusion#Compact toroids\|compact toroid]], a [[torus\|toroidal]] ([[doughnut]]-shaped) structure of plasma and magnetic fields with no coils penetrating the center. It lost funding in its original form in 1978.

			The configuration was produced by combining two individual toroids produced by two conical θ pinch guns, located at either end of a length of [[Pyrex]] pipe with a constant [[magnetic field\|magnetic]] guide field. The toroidal currents in the toroids were in opposite directions, so that they repelled each other. After coming to an equilibrium, they were [[adiabatic process\|adiabatically]] compressed by increasing the external field.

			== Force Free Plasma Vortices ==

			Force free plasma vortices have uniform [[magnetic helicity]] and therefore are stable against many instabilities. Typically, the current decays faster in the colder regions until the gradient in helicity is large enough to allow a turbulent redistribution of the current.

			Force free vortices follow the following equations.

			:<math>
			\begin{align}
			\vec{\nabla} \times \vec{B} = \alpha\vec{B} \\
			\vec{v} = \pm\beta\vec{B}
			\end{align}
			</math>

			The first equation describes a [[Lorentz force]]-free fluid: the <math> \vec{j} \times \vec{B} </math> forces are everywhere zero. For a laboratory plasma α is a constant and β is a scalar function of spatial coordinates.

			The magnetic flux surfaces are toroidal, with the current being totally [[Toroidal and poloidal\|toroidal]] at the core of the torus and totally [[Toroidal and poloidal\|poloidal]] at the surface of the torus. This is similar to the field configuration of a [[tokamak]], except that the field-producing coils are simpler and do not penetrate the plasma torus.

			Note that, unlike most plasma structures, the [[Lorentz force]] and the [[Magnus effect\|Magnus force]],
			<math> \rho\vec{\nabla} \times \vec{v} </math>,
			play equivalent roles. <math>\rho </math> is the mass density.

			== The Trisops Project ==

			Dr. Daniel Wells, while working on the [[Stellarator]] at the [[Princeton Plasma Physics Laboratory]] in the 1960s conceived of colliding and then compressing stable force free plasma toroids to produce conditions needed for thermonuclear fusion. The name, Trisops, is an [[acronym]] for Thermonuclear Reactor In Support of [[Project Sherwood]]. He later moved to the [[University of Miami]] where he set set up the Trisops machine, supported by the [[National Science Foundation]] and [[Florida Power and Light]].

			The project continued until 1978 when the NSF discontinued the grant and the [[United States Department of Energy\|Department of Energy]] did not pick up the support.

			== The Trisops Machine ==
			[[Image:Trisops machine.svg\|300px\|right\|'''Schematic diagram of Trisops machine used for creation and secondary compression of plasma vortex structures. Machine length is about 2m.''']]

			The Trisops machine consisted of DC mirror coils producing a 0.5 [[Tesla (unit)\|T]] guide field, two conical θ-pinch guns which produced two counter-rotating plasma vortices inside a pyrex vacuum chamber. The vortices approached each other, collided, repelled each other, and finally came to rest. At that time the compression coils produced a 3.5 T field with a quarter-cycle rise time of 10 μs.

			== Results ==

			The compressed rings retained their structure for 5 μs, with a density of 2 x 10<sup>17</sup> cm<sup>−3</sup>, an ion temperature of 5 keV, an electron temperature of 300 eV. A cutoff of funds prevented further measurements to resolve the discrepancy between the above figures, and the plasma electron-ion temperature equilibration time of 1 μs.

			== Followup ==

			The project lost funding in 1978. The machine was disassembled and remained at the [[University of Miami]] until 1997. At that time, the machine was moved to Lanham Md and reassembled for the CMTX project ( see reference ). The current status of the project and the machine are unknown.

			== References ==
			* D. R. Wells, J. Davidson, L. G. Phadke, J. G. Hirschberg, P. E. Ziajka, and J. Tunstall, [http://prola.aps.org/abstract/PRL/v41/i3/p166_1 High-temperature, high-density plasma production by vortex-ring compression ], ''Phys. Rev. Lett.'' '''41''', 166 (1978).
			* [http://www.rsiprinceton.com/pubs/APS%20DPP97.pdf CMTX Project], Nov. 1997

			[[Category:Fusion reactors]]
			[[Category:Plasma physics\| ]]

en>Mindmatrix: removed Category:Baseball statistics; added Category:Batting statistics using HotCat

2012-03-29T22:22:58Z

removed Category:Baseball statistics; added Category:Batting statistics using HotCat

New page

Wilber Berryhill is the name free psychic readings - [http://www.zavodpm.ru/blogs/glennmusserrvji/14565-great-hobby-advice-assist-allow-you-get-going zavodpm.ru], his mothers and fathers gave him and he completely digs that title. Distributing production has been his occupation for some time. It's not a common factor but what she likes doing is to perform domino but she doesn't have the time recently. love psychic ([http://www.youronlinepublishers.com/authWiki/AdolphvhBladenqq http://www.youronlinepublishers.com]) Her family members lives in Ohio but her spouse desires them to move.<br><br>Also visit my page - [http://alles-herunterladen.de/excellent-advice-for-picking-the-ideal-hobby/ spirit messages]

Gross Production Average - Revision history

en>Yobot: WP:CHECKWIKI error fixes using AWB (8976)

en>Mindmatrix: removed Category:Baseball statistics; added Category:Batting statistics using HotCat