Measurement of Cross-Magnetic-Field Heat Transport in a Pure Ion Plasma
نویسندگان
چکیده
Cross-magnetic-field heat transport in a quiescent pure ion plasma is found to be diffusive and to be dominated by long-range collisions with impact parameters up to a Debye length. The measured thermal diffusivity x agrees within a factor of 2 with the long-range prediction xL 0.49nȳb2l 2 D over a range of 103 in temperature, 50 in density, and 4 in magnetic field. This thermal diffusivity is independent of magnetic field strength, and is observed to be up to 100 times larger than the classical diffusivity. These long-range collisions are typically dominant in unneutralized plasmas, and may also contribute to electron heat transport in neutral plasmas. [S0031-9007(99)09328-X]
منابع مشابه
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