Characteristics of collisional damping of surface ion-acoustic mode in Divertor Plasma Simulator-2 (DiPS-2)
DC Field | Value | Language |
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dc.contributor.author | Lee, Myoung-Jae | - |
dc.contributor.author | Park, In Sun | - |
dc.contributor.author | Hong, Sunghoon | - |
dc.contributor.author | Chung, Kyu-Sun | - |
dc.contributor.author | Jung, Young-Dae | - |
dc.date.accessioned | 2022-07-18T01:28:01Z | - |
dc.date.available | 2022-07-18T01:28:01Z | - |
dc.date.created | 2022-01-05 | - |
dc.date.issued | 2021-12 | - |
dc.identifier.issn | 0022-3778 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/108082 | - |
dc.description.abstract | The dissipation of ion-acoustic surface waves propagating in a semi-bounded and collisional plasma which has a boundary with vacuum is theoretically investigated and this result is used for the analysis of edge-relevant plasma simulated by Divertor Plasma Simulator-2 (DiPS-2). The collisional damping of the surface wave is investigated for weakly ionized plasmas by comparing the collisionless Landau damping with the collisional damping as follows: (1) the ratio of ion temperature (T-i) to electron temperature (T-e) should be very small for the weak collisionality (T-i/T-e << 1); (2) the effect of collisionless Landau damping is dominant for the small parallel wavenumber, and the decay constant is given as gamma approximate to -root pi/2k(parallel to) lambda(De)omega(2)(pi)/omega(pe); and (3) the collisional damping dominates for the large parallel wavenumber, and the decay constant is given as gamma approximate to -nu(in)/16, where nu(in) 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 n(e) = (2-9) x 10(11) cm(-3), T-e = 3.7 - 3.8 eV, T-i = 0.2 - 0.3 eV and collision frequency nu(in) = 23 - 127 kHz. Although the wavelength should be specified with the given parameters of DiPS-2, the collisional damping is found to be gamma = (-0.9 to - 5) x 10(4) rad s(-1) for k(parallel to) lambda(De) = 10, while the Landau damping is found to be gamma = (-4 to - 9) x 10(4) rad s(-1) for k(parallel to) lambda(De) = 0.1. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | CAMBRIDGE UNIV PRESS | - |
dc.title | Characteristics of collisional damping of surface ion-acoustic mode in Divertor Plasma Simulator-2 (DiPS-2) | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Chung, Kyu-Sun | - |
dc.contributor.affiliatedAuthor | Jung, Young-Dae | - |
dc.identifier.doi | 10.1017/S0022377821001240 | - |
dc.identifier.scopusid | 2-s2.0-85122570407 | - |
dc.identifier.wosid | 000730253300001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF PLASMA PHYSICS, v.87, no.6, pp.1 - 9 | - |
dc.relation.isPartOf | JOURNAL OF PLASMA PHYSICS | - |
dc.citation.title | JOURNAL OF PLASMA PHYSICS | - |
dc.citation.volume | 87 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 9 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Fluids & Plasmas | - |
dc.subject.keywordPlus | WAVES | - |
dc.subject.keywordAuthor | DiPS-2 (Divertor Plasma Simulator-2) | - |
dc.subject.keywordAuthor | collisional damping | - |
dc.subject.keywordAuthor | surface plasmas | - |
dc.identifier.url | https://www.cambridge.org/core/journals/journal-of-plasma-physics/article/characteristics-of-collisional-damping-of-surface-ionacoustic-mode-in-divertor-plasma-simulator2-dips2/05A803DB3C0BB5A56B3FCD94AF086E60 | - |
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