کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
976619 1480122 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonextensive statistical mechanics approach to electron trapping in degenerate plasmas
ترجمه فارسی عنوان
رویکرد مکانیک های آماری عیرگسترده برای تله گذاری الکترون در پلاسماهای منحط
کلمات کلیدی
تله گذاری الکترونی؛ پلاسمای منحط؛ آنتروپی غیرگسترده؛ توزیع فرمی ـ دیارک qq-deformed؛ امواج انفرادی یون های صوتی
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
چکیده انگلیسی


• The electron trapping in a degenerate plasma is reformulated by incorporating the nonextensive entropy prescription.
• The qq-deformed Fermi–Dirac distribution function including the quantum as well as the nonextensive statistical effects is used.
• A new generalized electron density is obtained.
• The modifications arising in the propagation of ion-acoustic solitary waves are analyzed.

The electron trapping in a weakly nondegenerate plasma is reformulated and re-examined by incorporating the nonextensive entropy prescription. Using the qq-deformed Fermi–Dirac distribution function including the quantum as well as the nonextensive statistical effects, we derive a new generalized electron density with a new contribution proportional to the electron temperature TT, which may dominate the usual thermal correction (∼T2∼T2) at very low temperatures. To make the physics behind the effect of this new contribution more transparent, we analyze the modifications arising in the propagation of ion-acoustic solitary waves. Interestingly, we find that due to the nonextensive correction, our plasma model allows the possibility of existence of quantum ion-acoustic solitons with velocity higher than the Fermi ion-sound velocity. Moreover, as the nonextensive parameter qq increases, the critical temperature TcTc beyond which coexistence of compressive and rarefactive solitons sets in, is shifted towards higher values.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 451, 1 June 2016, Pages 525–532
نویسندگان
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