کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
767751 897208 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radial electric field in tokamaks as a relativistic effect
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Radial electric field in tokamaks as a relativistic effect
چکیده انگلیسی

It is shown that near a straight current carrying filament of a plasma a relativistic radial electric fieldE=Lrυp2-υe2c2may occur where υ→p and υ→e are the proton and electron fluid velocities with respect to the charged particle testing the field and L is the line charge density of electrons before the current rises. This electric field is extremely small in metallic conductors where the electric current is due to the very large density of conduction electrons and the drift velocity of each electron is relatively small (υe ≪ c), but becomes substantial in tokamaks where the electron density is much smaller and the drift velocities are very large. In the latter case, the above electric field in the cylindrical approximation is of the same order as the radial electric field measured due to ion pressure gradients and plasma rotation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Communications in Nonlinear Science and Numerical Simulation - Volume 13, Issue 1, February 2008, Pages 163–168
نویسندگان
, ,