자료유형  

 학위논문

Control Number  

0017163547

International Standard Book Number  

9798384466680

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Israeli, Ben Yehuda.

Publication, Distribution, etc. (Imprint  

[S.l.] : Princeton University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

136 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-04, Section: B.

General Note  

Advisor: Bhattacharjee, Amitava.

Dissertation Note  

Thesis (Ph.D.)--Princeton University, 2024.

Summary, Etc.  

요약The interaction of dust grains with plasmas is of substantial interest in both astrophysical and laboratory contexts. Dust is ubiquitous in astrophysical environments, playing a significant role in the dynamics and chemistry of systems such as molecular clouds, stellar winds, and supernova ejecta. The coupling of dust to surrounding media via drag and electromagnetic interactions produces a complex range of instabilities and other phenomena. In the laboratory, the large mass and size of dust particles (compared to that of ions and electrons) produces dynamics at comparably large length and time scales, providing a particularly accessible window into phenomena such as waves, shocks, and instabilities, and the peculiar physics of charged dust grains produces various unique phenomena of interest in their own right.The first segment of this work intends to bridge between the study of laboratory and astrophysical dusty plasmas by drawing parallels between various dusty plasma instabilities, namely resonant drag instabilities (RDIs), two-stream instabilities, and the filamentary ionization instability. RDIs are a recently introduced class of astrophysical instability produced by the resonant interaction of streaming dust with a wave in a background fluid. The linear theory of these instabilities can be described perturbatively by the splitting of defective eigenvalues. It is shown in this work that this approach should apply generally to a range of dusty plasma instabilities due to the ubiquitous presence of strong scale separation between the dust and other species. Further, it is shown that this overlap in the underlying mathematics of these instabilities corresponds to an overlap in their regimes of relevance, with consequences for astrophysical phenomena and for laboratory astrophysics.The second segment of this work focuses on the nonlinear theory of RDIs. We present a model of the turbulent saturation of the acoustic RDI, supported by numerical simulations. It is shown that the saturation process progresses from small scale to large, with a balance occurring between turbulent eddy turnover and instability growth at the forcing scale. The resulting turbulent cascade is strongly anisotropic at large scale, dependent upon dust mass fraction and streaming velocity, and possibly approaches universal isotropic behavior at smaller scales.

Subject Added Entry-Topical Term  

Plasma physics.

Subject Added Entry-Topical Term  

Astrophysics.

Subject Added Entry-Topical Term  

Physics.

Subject Added Entry-Topical Term  

Electromagnetics.

Index Term-Uncontrolled  

Dusty plasma

Index Term-Uncontrolled  

Interstellar medium

Index Term-Uncontrolled  

Ionization instability

Index Term-Uncontrolled  

Resonant drag instability

Index Term-Uncontrolled  

Turbulence

Added Entry-Corporate Name  

Princeton University Astrophysical Sciences-Plasma Physics Program

Host Item Entry  

Dissertations Abstracts International. 86-04B.

Electronic Location and Access  

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Control Number  

joongbu:655675