Improved model of quasi-particle turbulence (with applications to Alfvén and drift wave turbulence)

Mendona, JT; Hizanidis, K

dc.contributor.author	Mendona, JT	en
dc.contributor.author	Hizanidis, K	en
dc.date.accessioned	2014-03-01T02:53:18Z
dc.date.available	2014-03-01T02:53:18Z
dc.date.issued	2011	en
dc.identifier.issn	1070664X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36231
dc.subject.other	Anomalous transport	en
dc.subject.other	Classical problems	en
dc.subject.other	Drift waves	en
dc.subject.other	Geometric optics approximation	en
dc.subject.other	Improved models	en
dc.subject.other	Kinetic description	en
dc.subject.other	Low-frequency waves	en
dc.subject.other	Magnetic fusion devices	en
dc.subject.other	N-waves	en
dc.subject.other	Quasi particles	en
dc.subject.other	Recoil effect	en
dc.subject.other	Theoretical approach	en
dc.subject.other	Turbulent plasmas	en
dc.subject.other	Zonal flows	en
dc.subject.other	Acoustics	en
dc.subject.other	Fusion reactors	en
dc.subject.other	Plasma confinement	en
dc.subject.other	Plasma stability	en
dc.subject.other	Plasma turbulence	en
dc.subject.other	Plasma waves	en
dc.subject.other	Plasma simulation	en
dc.title	Improved model of quasi-particle turbulence (with applications to Alfvén and drift wave turbulence)	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1063/1.3656956	en
heal.identifier.secondary	http://dx.doi.org/10.1063/1.3656956	en
heal.identifier.secondary	112306	en
heal.publicationDate	2011	en
heal.abstract	We consider the classical problem of wave stability and dispersion in a turbulent plasma background. We adopt a kinetic description for the quasi-particle turbulence. We describe an improved theoretical approach, which goes beyond the geometric optics approximation and retains the recoil effects associated with the emission and absorption of low frequency waves by nearly resonant quasi-particles. We illustrate the present approach by considering two particular examples. One is the excitation of zonal flows by drift wave turbulence or driftons. The other is the coupling between ion acoustic waves and Alfvén wave turbulence, eventually leading to saturation of Alfvén wave growth. Both examples are relevant to anomalous transport in magnetic fusion devices. Connection with previous results is established. We show that these results are recovered in the geometric optics approximation. © 2011 American Institute of Physics.	en
heal.journalName	Physics of Plasmas	en
dc.identifier.doi	10.1063/1.3656956	en
dc.identifier.volume	18	en
dc.identifier.issue	11	en