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Spacecraft investigations during the last ten years have vastly improved our knowledge about dust in the Jovian system. All Galilean satellites, and probably all smaller satellites as well, are sources of dust in the Jovian system. In-situ…

Astrophysics · Physics 2007-05-23 Harald Krueger , Eberhard Gruen

Runaway electron termination on plasma facing components can trigger material explosions that are accompanied by the expulsion of fast solid debris. Due to the large kinetic energies of the ejected dust particles, their subsequent…

In this chapter we introduce a microscopic modelling of the surplus electrons on the plasma wall which complements the classical description of the plasma sheath. First we introduce a model for the electron surface layer to study the…

Plasma Physics · Physics 2013-03-29 Rafael L. Heinisch , Franz X. Bronold , Holger Fehske

Relativistic unmagnetized cloud-plasma interaction is analyzed by performing linear analysis and particle-in-cell simulation. This course consists of an electron-ion cloud injected into a stationary ambient plasma and has long been a…

High Energy Astrophysical Phenomena · Physics 2021-12-08 Kazem Ardaneh

An analytical model is developed to study the sound produced by the interaction between shock and instability waves in two-dimensional supersonic jet flows. The jet is considered to be of vortex-sheet type and 2D Euler equations are…

Fluid Dynamics · Physics 2023-01-18 Binhong Li , Benshuai Lyu

In the TE wave method, microwaves are coupled into the beam-pipe and the effect of the electron cloud on these microwaves is measured. An electron cloud (EC) density can then be calculated from this measurement. There are two analysis…

Accelerator Physics · Physics 2013-07-17 John P. Sikora , Robert M. Schwartz , Kiran G. Sonnad , David Alesini , Stefano De Santis

We study the potential of all-electrical inductive techniques for the spectroscopy of propagating forward volume spin waves. We develop a one-dimensional model to account for the electrical signature of spin-wave reflection and transmission…

Mesoscale and Nanoscale Physics · Physics 2020-11-18 M. Sushruth , M. Grassi , K. Ait-Oukaci , D. Stoeffler , Y. Henry , D. Lacour , M. Hehn , U Bhaskar , M. Bailleul , T. Devolder , J. -P. Adam

We consider the ability of three models - impacts, captures, and collisional cascades - to account for a bright cloud of dust in Fomalhaut b. Our analysis is based on a novel approach to the power-law size distribution of solid particles…

Solar and Stellar Astrophysics · Physics 2015-06-19 Scott J. Kenyon , Thayne Currie , Benjamin C. Bromley

A theoretical investigation of the modulational instability (MI) of dust-acoustic waves (DAWs) by deriving a nonlinear Schr\"{o}dinger equation in an electron depleted opposite polarity dusty plasma system containing non-extensive positive…

Plasma Physics · Physics 2021-02-03 J. Akter , N. A. Chowdhury , A. Mannan , A. A. Mamun

The dispersion properties of low frequency dust acoustic waves in the strong coupling regime are investigated experimentally in an argon plasma embedded with a mixture of kaolin and $MnO_2$ dust particles. The neutral pressure is varied…

Plasma Physics · Physics 2016-04-18 P. Bandyopadhyay , G. Prasad , A. Sen , P. K. Kaw

By means of a particle-in-cell (PIC) simulation, we study the interaction between a uniform magnetized ambient electron-proton plasma at rest and an unmagnetized pair plasma, which we inject at one simulation boundary with a mildly…

High Energy Astrophysical Phenomena · Physics 2024-06-19 M E Dieckmann , D Folini , R Walder , A Charlet , A Marcowith

We use extensive global two-dimensional hydrodynamic disk gas+dust simulations with embedded planets, coupled with three dimensional radiative transfer calculations, to model the dust ring and gap structures in the HL Tau protoplanetary…

Earth and Planetary Astrophysics · Physics 2016-02-17 Sheng Jin , Shengtai Li , Andrea Isella , Hui Li , Jianghui Ji

Planet-forming discs in sufficiently strong UV environments lose gas in external photoevaporative winds. Dust can also be entrained within these winds, which has consequences for the possible solids reservoir for planet formation, and…

Earth and Planetary Astrophysics · Physics 2025-04-09 S. Paine , T. J. Haworth , R. P. Nelson

To reveal the effect of secondary electron emission on the charging properties of a surface covered by micron-sized insulating dust particles and the migration characteristics of these particles, for the first time, we used a laser Doppler…

Earth and Planetary Astrophysics · Physics 2022-05-18 Hong Gan , Xiaoping Zhang , Xiongyao Li , Hong Jin , Lianghai Xie , Yongliao Zou

This thesis investigates the jet-medium interactions in a Quark-Gluon Plasma using a hydrodynamical model. It deals with the creation of Mach cones which are supposed to exhibit a characteristic structure in the measured angular particle…

Nuclear Theory · Physics 2009-10-22 Barbara Betz

Dynamic metasurface antennas (DMAs) arise as a promising technology in the field of massive multiple-input multiple-output (mMIMO) systems, offering the possibility of integrating a large number of antennas in a limited -- and potentially…

Signal Processing · Electrical Eng. & Systems 2022-12-23 Robin Jess Williams , Pablo Ramirez-Espinosa , Jide Yuan , Elisabeth De Carvalho

We compare observations of AGB stars and predictions of the Elitzur & Ivezic (2001) steady-state radiatively driven dusty wind model. The model results are described by a set of similarity functions of a single independent variable, and…

Solar and Stellar Astrophysics · Physics 2015-05-18 Zeljko Ivezic , Moshe Elitzur

LISA-Pathfinder is an ESA space mission flown between 2015 and 2017 to demonstrate a technological maturity sufficient for building a gravitational waves telescope in space, such as the Laser Interferometer Space Antenna (LISA). A pair of…

Instrumentation and Methods for Astrophysics · Physics 2021-01-21 Carlo Zanoni , Daniele Bortoluzzi

Electron transfer (ET) between primary electron donors and acceptors is modeled in the photosystem II reaction center (RC). Our model includes (i) two discrete energy levels associated with donor and acceptor, interacting through a…

A good constraint of when the growth of dust grains from sub-micrometer to millimeter sizes occurs, is crucial for planet formation models. This provides the first step towards the production of pebbles and planetesimals in protoplanetary…

Solar and Stellar Astrophysics · Physics 2019-03-27 C. Agurto-Gangas , J. E. Pineda , L. Szucs , L. Testi , M. Tazzari , A. Miotello , P. Caselli , M. Dunham , I. W. Stephens , T. L. Bourke