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Shaing, K.C.; Hazeltine, R.D.; Zarnstorff, M.C.
Texas Univ., Austin, TX (United States). Inst. for Fusion Studies; Princeton Univ., NJ (United States). Plasma Physics Lab. Funding organisation: USDOE Office of Energy Research, Washington, DC (United States)1997
Texas Univ., Austin, TX (United States). Inst. for Fusion Studies; Princeton Univ., NJ (United States). Plasma Physics Lab. Funding organisation: USDOE Office of Energy Research, Washington, DC (United States)1997
AbstractAbstract
[en] It is shown that ion thermal conductivity close to the magnetic axis in tokamaks is reduced by a factor of |S|5/3 if (Mi/Me)2/3(Te/Ti)4/3/|S|5/3 much-gt 1. Here, S is the orbit squeezing factor, Mi(Me) is the ion (electron) mass, and Ti(Tee) is the ion (electron) temperature. The reduction reflects both the increase of the fraction of trapped particles by a factor of |S|1/3, and the decrease of the orbit size in units of the poloidal flux ψ by a factor of |S|2/3
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Jan 1997; 18 p; IFSR--778; CONTRACT FG03-96ER54346; AC02-76CH03073; Also available from OSTI as DE97005274; NTIS; US Govt. Printing Office Dep
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