The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction / by Michael Hubeny

Von:

Hubeny, Michael, 1986- [VerfasserIn]

Resource type: Ressourcentyp: Buch (Online)Buch (Online)Sprache: Englisch Reihen: Springer Theses | Springer Theses, Recognizing Outstanding Ph.D. Research | SpringerLink BücherVerlag: Cham : Springer, 2019Beschreibung: 1 Online-Ressource (XIV, 126 Seiten) : 67 IllustrationenISBN:

9783030125363

Schlagwörter: Genre/Form:

Hochschulschrift

530.44

LOC-Klassifikation:

QC717.6-718.8

DOI: DOI: 10.1007/978-3-030-12536-3Online-Ressourcen:

Hochschulschriftenvermerk: Dissertation - Research Center Jülich, 2017 Zusammenfassung: Turbulence in plasma surface interaction holds crucial uncertainties for its impact on material erosion in the operation of fusion reactors. In this thesis, the design, development and operation of a Thomson scattering diagnostic and its novel implementation with fast visual imaging created a versatile tool to investigate intermittently occuring plasma oscillations. Specifically, ballistic transport events in the plasma edge, constituting turbulent transport, have been targeted in this thesis. With the help of a custom photon counting algorithm, the conditional averaging technique was applied on Thomson scattering for the first time to allow spatial and pseudo-time-resolved measurements. Since plasma turbulence and the emerging transport phenomena are comparable in most magnetized devices, the diagnostic development and the results from the linear plasma device PSI-2 are useful for an implementation of similar techniques in larger fusion experiments. Furthermore, the obtained results indicate a strong enhancement of erosion with turbulent transport and thus underline the importance of dedicated experiments investigating plasma turbulence in the framework of erosion in future fusion reactorsZusammenfassung: Introduction -- Plasma Wall Transition Dynamics -- Laser Light Scattering as Plasma Diagnostic -- Experimental Setup on PSI-2 -- Thomson Scattering Setup -- Data Analysis and Calibration -- Steady State Plasma Results -- Plasma Turbulence Results -- Summary and ConclusionPPN: PPN: 1067368949Package identifier: Produktsigel: ZDB-2-PHA | ZDB-2-SEB | ZDB-2-SXP

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