Characteristics of collisional damping of surface ion-acoustic mode in Divertor Plasma Simulator-2 (DiPS-2)
- Title
- Characteristics of collisional damping of surface ion-acoustic mode in Divertor Plasma Simulator-2 (DiPS-2)
- Author
- 정영대
- Keywords
- DiPS-2 (Divertor Plasma Simulator-2); collisional damping; surface plasmas
- Issue Date
- 2021-12
- Publisher
- CAMBRIDGE UNIV PRESS
- Citation
- JOURNAL OF PLASMA PHYSICS, v. 87, NO 6, Page. 1-9
- Abstract
- and (3) the collisional damping
dominates for the large parallel wavenumber, and the decay constant is given as γ ≈
−νin/16, where νin is the ion–neutral collisional frequency. An experimental simulation
of the above theoretical prediction has been done in the argon plasma of DiPS-2, which has
the following parameters: plasma density ne = (2–9) × 1011 cm−3, Te = 3.7 − 3.8 eV,
Ti = 0.2 − 0.3 eV and collision frequency νin = 23 − 127 kHz. Although the wavelength
should be specified with the given parameters of DiPS-2, the collisional damping is
found to be γ = (−0.9 to − 5) × 104 rad s−1 for k λDe = 10, while the Landau damping
is found to be γ = (−4 to − 9) × 104 rad s−1 for k λDe = 0.1.
- URI
- https://www.cambridge.org/core/journals/journal-of-plasma-physics/article/characteristics-of-collisional-damping-of-surface-ionacoustic-mode-in-divertor-plasma-simulator2-dips2/05A803DB3C0BB5A56B3FCD94AF086E60https://repository.hanyang.ac.kr/handle/20.500.11754/169216
- ISSN
- 00223778; 14697807
- DOI
- 10.1017/S0022377821001240
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > APPLIED PHYSICS(응용물리학과) > Articles
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