Nonlocal collisional electron transport in partially ionized plasma generation, structure, and stability
2016.04.18 12:17
날짜 | 2016-04-19 14:00 |
---|---|
일시 | Apr. 19(Tue.), 2PM |
장소 | #1323(E6-2. 1st fl.) |
연사 | Prof. Mark Koepke, Department of Physics and Astronomy, West Virginia University, USA |
Nonlocal collisional electron transport in partially ionized plasma generation, structure, and stability
Apr. 19(Tue.), 2PM, #1323(E6-2. 1st fl.)
Prof. Mark Koepke, Department of Physics and Astronomy, West Virginia University, USA
The local plasma generation, structure, and stability at one location and time can be unexpectedly influenced by “nonlocal” electron transport and heating effects attributed to conditions, processes, and boundaries many energy-relaxation scale lengths away in another part of the plasma. Nonlocal effects are attributed to electric-field sampling by a traversing electron across disparate regional plasma conditions when the electron energy relaxation length is larger than or comparable to the scale length of plasma inhomogeneity. As a result, the entire electric-field profile, including sheaths, striations, and filamentation, rather than the local electric field strength, determines spatiotemporal electron current and heating, even in collisional plasma. Non-equilibrium, nonlocal properties make partially ionized plasma, which is strongly affected also by the presence of neutral species, a solid surface, particulates, or a liquid, a remarkable tool for manufacturing (of semiconductor chips, solar and plasma-display panels, and plasma sources for particle beams), for the treatment of organic and bio-objects/materials, and for nanotechnology. A promising approach for improved control of the local quantities plasma density, electron temperature, and electron and ion energy distribution functions (EEDF, IEDF) exploits the peculiarities of nonlocal effects on these characteristic plasma parameters. Nonlocal collisional electron transport effects are important for understanding and applying atmospheric-pressure plasma jets, micro-discharges, and low pressure plasma discharges not only to the pursuit of the discovery plasma frontier but also to technology used everyday.
댓글 0
번호 | 날짜 | 장소 | 제목 |
---|---|---|---|
424 | 2015-03-04 12:00 | 1323호, E6-2 | Bioimaging and Biosensing Using Near-Infrared Fluorescence |
423 | 2016-12-12 13:30 | 1:30p.m. #1323(E6-2. 1st fl.) | “Possible symmetry in the phase diagrams of electron- & hole-doped cuprate high-Tc superconductors” |
422 | 2016-10-18 13:30 | 1st fl. #1323(E6-2) | "Visualization of oxygen vacancy in motion and the interplay with electronic conduction" |
421 | 2019-07-10 16:00 | Academic Cltural Complex (E9) 5층 스카이라운지 | Public Lectures |
420 | 2015-08-04 11:00 | B501, Room Red, KI bldg. 5nd fl. | Propagation of ultrasound through two- and three-dimensional strongly scattering media |
419 | 2016-06-01 10:30 | BK21 Conference Room (#1318, E6-2) | Welcome to Nature Photonics |
418 | 2020-10-15 16:00 | CAPP Seminar Room #C303, Creation Hall (3F), KAIST Munji Campus | Graphene-based Josephson junction microwave bolometer |
417 | 2023-09-14 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP seminar] Dark matter searches in Water Cherenkov Detectors |
416 | 2023-05-15 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | Role of dark Higgs boson in DM physics and cosmology |
415 | 2023-09-18 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP Seminar] Searching for axions in quantum vacuum birefringence |
414 | 2023-10-11 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP seminar] Particle Physics with Neutrinos |
413 | 2023-09-21 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP seminar] Axion Magnetic Resonance |
412 | 2023-06-14 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP seminar] EMC at CERN |
411 | 2024-01-25 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP seminars] Detecting Gravitational Waves by Elecromagnetic Cavity |
410 | 2023-03-27 15:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | A coherent mechanical oscillator pumped by a suspended quantum dot |
409 | 2023-03-30 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | Detecting axions with chiral magnetic effects |
408 | 2023-07-26 10:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP Seminar] Am Expansive Search for Dark Matter with ADMX and DM Radio |
407 | 2023-06-22 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP Seminar] The muon g-2 puzzle |
406 | 2023-06-15 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | [CAPP Seminar] Cryogenic electronics for ion traps |
405 | 2023-12-14 16:00 | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | Superconducting qubits for large-scale quantum computers |