Non-modal analysis of the diocotron instability: Cylindrical geometry

Journal Article · Mon Apr 15 04:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4798420· OSTI ID:22130412

Mikhailenko, V. V.; Lee, Hae June ^[1]; Mikhailenko, V. S. ^[2]; Azarenkov, N. A. ^[2]

---

1. Pusan National University, Busan 609-735 (Korea, Republic of)
2. V.N. Karazin Kharkov National University, 61108 Kharkov (Ukraine)

The temporal evolution of the linear diocotron instability of the cylindrical annular plasma column is investigated by employing the extension of the shearing modes methodology to the cylindrical geometry. It was obtained that the spatial time-dependent distortion of the electron density initial perturbations by shear flows leads to the non-modal evolution of the potential, which was referred to as the manifestation of the continuous spectrum. The evolution process leads toward the convergence to the phase-locking configuration of the mutually growing normal modes.

• OSTI ID: 22130412
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 4 Vol. 20; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CYLINDRICAL CONFIGURATION
ELECTRON DENSITY
GEOMETRY
PLASMA DENSITY
PLASMA INSTABILITY
SHEAR
TIME DEPENDENCE