5409

5069

كارشناسي ارشد

هسته اي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك

1389

[نه]،84ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

اكبر پروازيان

ظفرالله كلانتري

14/6/89

داخلي: احمد شيراني، محمد حسن علامت ساز

فيزيك

ID5069

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Studying of electron distribution function in hot plasma and Electron Bernstein Wave damping on NSTX Mostafa Abbasi m abbasi@ph iut ac ir 19 04 2010 Depatrment of Physics Isfahan University of Technology Isfahan 84156 83111 Iran Language Degree M Sc Supervisor Assoc Prof A Parvazian parvazin@cc iut ac ir Abstract Providing of fusion situation is the most important affair in fusion reactors These conditions are just provided by increasing particle s temperature and density In this way the collision rate between deuterium and tritium would be raised In large tokomaks such as JET and ITER heating process is done by D T fuel injection confinement by very high magnetic fields around 30 T and creating inductive current derive At 1999 in PPPL a new generation of fusion reactors was unveiled which presented some extraordinary characteristics NSTX was a spherical torus that provided so compact and high confined plasma just by means of 0 5 T magnetic fields For this respect it was a feat With respect of its small radius it yields so stable plasma so that its plasma is estimated by an over dense plasma Due to its high temperature using of direct probing in order to determine the plasma characteristic features such as density temperature and is a fatal problems in this way the only solution is waves On the other hands buy considering the conductive property of plasma prorogation of wave is a challenge by its own However by wave theory development we can overcome this matter Some wave modes can propagate through the plasma X and O and Bernstein wave are the most important of them According to wave theory in plasma environment an X or O waves can convert to a Bernstein wave in a special out layer so called UHR The Bernstein wave can easily propagate toward the inner areas with higher density and be damped in electron cyclotron harmonics Inasmuch as the UHR has so vital role in this conversion and also it is so sensitive to density and magnetic field fluctuations in this kind of reactors so its simulation is essential Key Words deuterium tritium tokomak JET ITER NSTX O wave X wave Bernstein wave UHR electron cyclotron harmonic

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