Saturation of low-threshold two-plasmon parametric instability of an extraordinary wave in an inhomogeneous plasma

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S106377611508021X· OSTI ID:22472117

Gusakov, E. Z. ^[1]

---

1. Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)

Saturation of low-threshold parametric decay instability of an electron cyclotron wave of extraordinary polarization is analyzed; the development of this instability near a local maximum of the plasma density profile gives rise to two upper hybrid (UH) plasmons at frequencies close to the half of the pump wave frequency. As a saturation mechanism of this instability, a cascade decay of daughter UH waves is used, which leads to the excitation of secondary UH and lower hybrid (LH) waves that are also radially localized in the vicinity of a local maximum and minimum of the plasma density profile, respectively.

• OSTI ID: 22472117
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 121, Issue 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DECAY INSTABILITY
ELECTRONS
EXCITATION
INHOMOGENEOUS PLASMA
LOWER HYBRID CURRENT DRIVE
LOWER HYBRID HEATING
PARAMETRIC INSTABILITIES
PLASMA DENSITY
PLASMONS
POLARIZATION