Published August 1996
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Pseudo-MHD ballooning modes in tokamak plasmas
Description
The MHD description of a plasma is extended to allow electrons to have both fluid-like and adiabatic-regime responses within an instability eigenmode. In the resultant open-quotes pseudo-MHDclose quotes model, magnetic field line bending is reduced in the adiabatic electron regime. This makes possible a new class of ballooning-type, long parallel extent, MHD-like instabilities in tokamak plasmas for α > s2(2 7/3/9) (rp/R0) or-d√Β/dr > (21/6 /3)(s/ R0q), which is well below the ideal-MHD stability boundary. The marginally stable pressure profile is similar in both magnitude and shape to that observed in ohmically heated tokamak plasmas
Availability note (English)
MF available from INIS under the Report Number; Also available from OSTI as DE96015003; NTIS; US Govt. Printing Office Dep.
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Additional details
Publishing Information
- Imprint Pagination
- 21 p.
- Report number
- UW-CPTC--96-5
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28006720
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- BALLOONING INSTABILITY; DISPERSION RELATIONS; JOULE HEATING; MHD EQUILIBRIUM; TOKAMAK DEVICES
- Descriptors DEC
- CLOSED PLASMA DEVICES; EQUILIBRIUM; HEATING; INSTABILITY; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; THERMONUCLEAR DEVICES
Optional Information
- Contract/Grant/Project number
- Contract FG02-86ER53218; Grant PHY94-07194
- Funding organization
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States).