Article
Computer Science, Interdisciplinary Applications
Francis Filbet, Luis Miguel Rodrigues
Summary: We propose and analyze a class of particle methods for the Vlasov equation with a strong external magnetic field in a torus configuration. Our approach is based on higher-order semi-implicit numerical schemes that have been validated on dissipative systems and for magnetic fields pointing in a fixed direction. This scheme provides a consistent approximation of the guiding-center system when the magnitude of the external magnetic field is large.
JOURNAL OF COMPUTATIONAL PHYSICS
(2023)
Article
Physics, Multidisciplinary
Shubhra Bhowmick, Biswajit Sahu
Summary: This study systematically investigates the propagation of both linear and nonlinear dust acoustic waves in a collisional magnetized warm dusty plasma. The analysis reveals that the linear damping is caused by dust-neutral collisions and the nonlinear excitations are significantly influenced by various plasma parameters.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Physics, Multidisciplinary
Reda E. Tolba
Summary: This study investigates the nonlinear features of dust-acoustic waves in a multicomponent, collisional, magnetized dusty plasma. The DZK equation is solved using the generalized (G' / G)-expansion method and the Painleve analysis method, providing a class of solutions for different types of nonlinear waves. The effects of various plasma parameters on the behavior of the waves are also examined, with relevance to the understanding of cosmic dust-laden plasmas.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Physics, Fluids & Plasmas
M. M. Orani, Jhorna Akter, A. A. Mamun
Summary: This paper theoretically investigates the oblique propagation of modified ion-acoustic solitary and shock waves in magnetized dusty plasmas. The study finds that different plasma parameters significantly modify the basic features of ion-acoustic nonlinear waves, including amplitude, width, speed, polarity, and obliqueness. The considered plasma system supports compressive solitary and shock waves only. The findings of this investigation are important for interpreting various nonlinear phenomena formed in space environments (such as aurora and Saturn's rings) and laboratory devices (such as tokamaks).
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
T. I. Rajib, S. Sultana
Summary: The reductive perturbation approach was used to study the nonlinear propagation of fast and slow EPMA modes in an EP plasma medium. It was found that the fast mode propagates as a compressive solitary wave, while the slow mode propagates as a rarefactive solitary wave. The significance of this study lies in understanding the nonlinear electromagnetic wave phenomena in laboratory plasma and space environments.
Article
Astronomy & Astrophysics
P. M. W. Kalberla, J. Kerp, U. Haud
Summary: The study aims to investigate the coherence between 857 GHz far infrared emission and H I structures on angular scales of 18'. By analyzing the data, it was found that there is some correlation between H I column densities and FIR emission, particularly in narrow velocity intervals. Additionally, a high degree of consistency in orientation angles was observed along the filaments both in velocity space and projected perpendicular to the line of sight.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Optics
Suresh Chandra, Mohit Kumar Sharma
Summary: The study focuses on the excitation of various modes through partially or fully ionized plasma, with a specific interest in the Trivelpiece-Gould (TG) mode and the relativistic propagation of electron beams in dusty plasma. The investigation reveals that the dispersion relation for such scenarios is highly complex and infeasible for analysis, pointing out discrepancies from earlier studies.
Article
Physics, Fluids & Plasmas
Juan Zhang, Xueping Ren, Xiaohuan Wan, Yushan Zhou, Xiaobei Fan, Jing Wang, Yuren Shi
Summary: This paper numerically and theoretically investigates the characteristics of completely localized solitons and their dynamical stabilities. The results show that the amplitude of the solitons is proportional to the square of its speed and inversely proportional to the square of the nonlinear interaction strength. The localized solitons are found to be always dynamically stable.
PHYSICS OF PLASMAS
(2022)
Article
Astronomy & Astrophysics
Yu Cheng, Jonathan C. Tan, Paola Caselli, Laura Fissel, Hector G. Arce, Francesco Fontani, Matthew D. Goodson, Mengyao Liu, Nicholas Galitzk
Summary: Our study on star formation in the Center Ridge 1 (CR1) clump reveals relatively strong magnetic field, low compact dense gas fraction, and decreasing deuterium levels with evolutionary stage.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
E. F. El-Shamy, M. M. Selim
Summary: This study investigates the obliquely propagating three-dimensional dust-acoustic periodic travelling waves (DAPTWs) in a magnetized dusty plasma and analyzes the influences of intrinsic physical parameters on the characteristics of DAPTWs through numerical simulations.
ASTROPHYSICS AND SPACE SCIENCE
(2022)
Article
Physics, Fluids & Plasmas
Zakaria Bellahsene, Kamel Aoutou, Mustapha Bacha
Summary: The dynamics of obliquely propagating ion-acoustic waves in a collisionless, magnetized plasma with free and trapped electrons and a vortex-like distribution has been investigated. Nonlinear structures such as solitary waves, periodic and quasi-periodic oscillations, and chaotic structures have been obtained. The effects of magnetic field strength, wave propagation obliqueness, Mach number, and electron trapping on these structures have been explored.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Astronomy & Astrophysics
Petra Sukova, Michal Zajacek, Vojtech Witzany, Vladimir Karas
Summary: This study investigates how the passage of a star can influence the gaseous environment of a supermassive black hole, finding that a quasi-stationary inflow can be temporarily inhibited by a transiting star and plasmoids can be ejected along the magnetic field lines. By observing the power spectrum of accretion variability, there is potential for multi-messenger detection of these transient events.
ASTROPHYSICAL JOURNAL
(2021)
Article
Physics, Multidisciplinary
S. Y. El-Monier, A. S. El-Helbawy, Moamen M. Elsayed, M. Saad
Summary: The nonlinear wave propagation in dusty plasmas, which differs significantly from that in normal plasmas, has attracted much attention in recent decades due to its importance in interpreting some astrophysical phenomenon. Several types of acoustic waves propagate in dusty plasmas depending on their time scales. In this study, the propagation of DIA waves in a multi-component dusty plasma system was investigated, showing the effects of magnetic field and superthermal parameters on the Sagdeev potential. Bifurcation analysis was considered and graphically presented under two conditions (A > 0) and (A < 0). This theoretical work is valuable for fully understanding disturbances of the electrostatic in space dusty plasmas.
Article
Physics, Fluids & Plasmas
Yu-Hang Wu, Lei Zhang, Yue-Xing Zhao, Xiang Li, Kai-Hua Shao, Qing-Qing Wang, Yu-Ren Shi
Summary: The propagation characteristics of terahertz waves in magnetized dusty plasmas sheath are investigated theoretically, considering both the right-and left-hand circularly polarized waves. The results demonstrate that external magnetic field, plasma slab thickness, electron collision frequency, dust particles, and electron relaxation rate can affect the propagation characteristics of THz waves in plasmas. These simulation results provide a significant theoretical basis for solving the blackout problem.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Physics, Multidisciplinary
S. Sultana
Summary: This study investigates the formation and propagation nature of ion-acoustic shock waves in a magnetized plasma with superthermal trapped electrons using fluid dynamical approach for the first time. It examines the basic features of these shock waves and their dependence on plasma parameters, and discusses the potential applications in space and laboratory plasma environments with nonthermal trapped electrons.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Rickard Gunnarsson, Ulf Helmersson, Iris Pilch
JOURNAL OF NANOPARTICLE RESEARCH
(2015)
Article
Materials Science, Multidisciplinary
Bart Vermang, Jorn Timo Watjen, Viktor Fjallstrom, Fredrik Rostvall, Marika Edoff, Rickard Gunnarsson, Iris Pilch, Ulf Helmersson, Ratan Kotipalli, Frederic Henry, Denis Flandre
Article
Physics, Applied
Rickard Gunnarsson, Iris Pilch, Robert D. Boyd, Nils Brenning, Ulf Helmersson
JOURNAL OF APPLIED PHYSICS
(2016)
Article
Physics, Applied
I. Pilch, L. Caillault, T. Minea, U. Helmersson, A. A. Tal, I. A. Abrikosov, E. P. Munger, N. Brenning
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2016)
Article
Materials Science, Multidisciplinary
Robert D. Boyd, Fredrik Soderlind, Ulf Helmersson, Magnus Oden, Iris Pilch
Article
Physics, Applied
I. Pilch, D. Soderstrom, N. Brenning, U. Helmersson
APPLIED PHYSICS LETTERS
(2013)
Article
Physics, Applied
I. Pilch, D. Soderstrom, M. I. Hasan, U. Helmersson, N. Brenning
APPLIED PHYSICS LETTERS
(2013)
Review
Biochemistry & Molecular Biology
M. H. Vendelbo, K. S. Nair
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
(2011)
Article
Materials Science, Multidisciplinary
Alexey A. Tal, E. Peter Muger, Igor A. Abrikosov, Nils Brenning, Iris Pilch, Ulf Helmersson
Article
Physics, Fluids & Plasmas
Franko Greiner, Jan Carstensen, Nils Koehler, Iris Pilch, Helge Ketelsen, Sascha Knist, Alexander Piel
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2012)
Article
Physics, Fluids & Plasmas
M. I. Hasan, I. Pilch, D. Soderstrom, D. Lundin, U. Helmersson, N. Brenning
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2013)
Article
Materials Science, Multidisciplinary
Robert D. Boyd, I. Pilch, M. Garbrecht, M. Halvarsson, U. Helmersson
MATERIALS RESEARCH EXPRESS
(2014)
Proceedings Paper
Microscopy
Robert D. Boyd, Rickard Gunnarsson, Iris Pilch, Ulf Helmersson
ELECTRON MICROSCOPY AND ANALYSIS GROUP CONFERENCE 2013 (EMAG2013)
(2014)
Proceedings Paper
Physics, Applied
Franko Greiner, Jan Carstensen, Nils Koehler, Iris Pilch, Alexander Piel
NON-NEUTRAL PLASMA PHYSICS VIII
(2013)
Article
Engineering, Chemical
Iris Pilch, Daniel Soderstrom, Daniel Lundin, Ulf Helmersson
KONA POWDER AND PARTICLE JOURNAL
(2014)