American Physical Society;United States: American Physical Society
摘要:
摘要： From numerical simulation and analytical modeling it is shown that fast ions can resonate with plasma waves at fractional values of the particle drift-orbit transit frequency when the plasma wave amplitude is sufficiently large. The fractional resonances, which are caused by a nonlinear interaction between the particle orbit and the wave, give rise to an increased density of resonances in phase space which reduces the threshold for stochastic transport. The effects of the fractional resonances on spatial and energy transport are illustrated for an energetic particle geodesic acoustic mode but they apply equally well to other types of MHD activity. 其他題名： Phys Rev Lett 出版者： United States: American Physical Society 出版日期： 2012-07-18 出處： Physical review letters, 2012-07, Vol.109 (3), p.035003, Article 035003 資源來源： APS Journals 識別號： ISSN: 0031-9007 識別號： ISSN: 1079-7114 識別號： ISSN: 1092-0145 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.109.035003 識別號： PMID: 22861863
