서브메뉴
검색
Resonant Instabilities in Astrophysical and Laboratory Dusty Plasmas
Resonant Instabilities in Astrophysical and Laboratory Dusty Plasmas
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152722
- ISBN
- 9798384466680
- DDC
- 530
- 서명/저자
- Resonant Instabilities in Astrophysical and Laboratory Dusty Plasmas
- 발행사항
- [Sl] : Princeton University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 136 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
- 주기사항
- Advisor: Bhattacharjee, Amitava.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2024.
- 초록/해제
- 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.
- 일반주제명
- Plasma physics
- 일반주제명
- Astrophysics
- 일반주제명
- Physics
- 일반주제명
- Electromagnetics
- 키워드
- Dusty plasma
- 키워드
- Turbulence
- 기타저자
- Princeton University Astrophysical Sciences-Plasma Physics Program
- 기본자료저록
- Dissertations Abstracts International. 86-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017163547
■00520250211152722
■006m o d
■007cr#unu||||||||
■020 ▼a9798384466680
■035 ▼a(MiAaPQ)AAI31489877
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aIsraeli, Ben Yehuda.▼0(orcid)0000-0002-1815-2876
■24510▼aResonant Instabilities in Astrophysical and Laboratory Dusty Plasmas
■260 ▼a[Sl]▼bPrinceton University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a136 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-04, Section: B.
■500 ▼aAdvisor: Bhattacharjee, Amitava.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2024.
■520 ▼aThe 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.
■590 ▼aSchool code: 0181.
■650 4▼aPlasma physics
■650 4▼aAstrophysics
■650 4▼aPhysics
■650 4▼aElectromagnetics
■653 ▼aDusty plasma
■653 ▼aInterstellar medium
■653 ▼aIonization instability
■653 ▼aResonant drag instability
■653 ▼aTurbulence
■690 ▼a0759
■690 ▼a0596
■690 ▼a0605
■690 ▼a0607
■71020▼aPrinceton University▼bAstrophysical Sciences-Plasma Physics Program.
■7730 ▼tDissertations Abstracts International▼g86-04B.
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163547▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
