کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8204368 1530539 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Observation of ion acoustic multi-Peregrine solitons in multicomponent plasma with negative ions
ترجمه فارسی عنوان
مشاهده ی سلولیت های صوتی یون صوتی چند پره ای در پلاسما ی چندجملهای با یون های منفی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی
The evolution of the multi-Peregrine soliton is investigated in a multicomponent plasma and found to be critically dependent on the initial bound state. Formation and splitting of Peregrine soliton, broadening of the frequency spectra provide clear evidence of nonlinear-dispersive focusing due to modulational instability, a generic mechanism for rogue wave formation in which amplitude and phase modulation grow as a result of interplay between nonlinearity and anomalous dispersion. We have shown that initial perturbation parameters (amplitude & temporal length) critically determine the number of solitons evolution. It is also found that a sufficiently long wavelength perturbation of high amplitude invoke strong nonlinearity to generate a supercontinuum state. Continuous Wavelet Transform (CWT) and Fast Fourier Transform (FFT) analysis of the experimental time series data clearly indicate the spatio-temporal localization and spectral broadening. We consider a model based on the frame work of Nonlinear Schrodinger equation (NLSE) to explain the experimental observations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 381, Issue 48, 28 December 2017, Pages 4011-4018
نویسندگان
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