Observation of the Anomalous Swelling of a Local Magnetic Field in a Linear Theta Pinch

Acalculationof thephotoemissionfromAl (100) and (111) surfaces, whichincludes band-structure effects but neglects screening of the photon field, gives good agreement with experimental results atfixed photon energy; it does not reproduce the observed variation in emission intensity from a fixed initial state as a function of photon frequency. Treating AI as a free-electron gas with a frequency-dependent local dielectric functionis also unsatisfactory. However, using the simple hydrodynamic method for non-local screening at a metal surface, in which the surface polarisation charge is treated more realistically, we obtain good agreement with the frequency dependence of photoemission both from the AI( 100) surface state, and from the Fermi level, This shows enhancement in photoemission below the bulk plasmon frequency, and a minimum at op.

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On Shifting of Plowed Plasma to Back of Current Sheath in Implosion Phase of Theta-Pinch

Ogi

Shiratani²,

Takamatsu

et al. 1987

Jpn. J. Appl. Phys.

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Generation of a Large Swelling in the Spatial Magnetic Field Profile near the Coil Axis of a Theta Pinch

Ogi

Shiratani

Watanabe

1987

Jpn. J. Appl. Phys.

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A large magnetic field swelling near the coil axis in a theta pinch with low discharge energy was investigated in detail by changing the gas-fill pressure, the kind of gas and the intensity of the applied magnetic field. Under the experimental conditions, the maximum magnetic field around the axis amounted to more than three times the applied field. It was experimentally clarified that the shifting of the plowed plasma to the back of the current sheath in the implosion phase is essential for the phenomenon and that the amplitude of the field around the axis can be explained by the flux trapped by the shifted plasma.

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Observation of the Anomalous Swelling of a Local Magnetic Field in a Linear Theta Pinch

Cited by 2 publications

References 3 publications

On Shifting of Plowed Plasma to Back of Current Sheath in Implosion Phase of Theta-Pinch

On Shifting of Plowed Plasma to Back of Current Sheath in Implosion Phase of Theta-Pinch

Generation of a Large Swelling in the Spatial Magnetic Field Profile near the Coil Axis of a Theta Pinch

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