1
|
Huang H, Ivlev AV, Nosenko V, Yang W, Du CR. Dissipative solitary waves in a two-dimensional complex plasma: Amorphous versus crystalline. Phys Rev E 2023; 107:045205. [PMID: 37198834 DOI: 10.1103/physreve.107.045205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/22/2023] [Indexed: 05/19/2023]
Abstract
The propagation of a dissipative soliton was experimentally studied in a two-dimensional binary complex plasma. The crystallization was suppressed in the center of the particle suspension where two types of particles were mixed. The motions of individual particles were recorded using video microscopy, and the macroscopic properties of the solitons were measured in the amorphous binary mixture in the center and in the plasma crystal in the periphery. Although the overall shape and parameters of solitons propagating in amorphous and crystalline regions were quite similar, their velocity structures at small scales as well as the velocity distributions were profoundly distinct. Moreover, the local structure rearranged drastically in and behind the soliton, which was not observed in the plasma crystal. Langevin dynamics simulations were performed, and the results agreed with the experimental observations.
Collapse
Affiliation(s)
- He Huang
- College of Science, Donghua University, Shanghai 201620, People's Republic of China
| | - Alexei V Ivlev
- Max Plank Institute for Extraterrestrial Physics, Garching 85748, Germany
| | - Volodymyr Nosenko
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Cologne 51147, Germany
| | - Wei Yang
- College of Science, Donghua University, Shanghai 201620, People's Republic of China
| | - Cheng-Ran Du
- College of Science, Donghua University, Shanghai 201620, People's Republic of China
- Member of Magnetic Confinement Fusion Research Centre, Ministry of Education, Shanghai 201620, People's Republic of China
| |
Collapse
|
2
|
Akter S, Hafez MG. Collisional positron acoustic soliton and double layer in an unmagnetized plasma having multi-species. Sci Rep 2022; 12:6453. [PMID: 35440746 PMCID: PMC9018898 DOI: 10.1038/s41598-022-10236-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 04/04/2022] [Indexed: 12/04/2022] Open
Abstract
This paper explores the head-on collision between two-counter propagating positron acoustic solitons and double layers (DLs) in an unmagnetized collisionless plasma having mobile cold positrons fluid, immobile positive ions and (\documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$$r,\;q$$\end{document}r,q)-distributed hot positrons, and hot electrons. By employing the extended Poincaré–Lighthill–Kuo method, the coupled Korteweg–de Vries (KdV), modified KdV (mKdV) and Gardner equations are derived to archive this goal. The effect of dimensionless parameters on the propagation characteristics of interacting KdV solitons (KdVSs), mKdV solitons (mKdVSs), Gardner solitons (GSs) and DLs are examined in detail by considering the limiting cases of (\documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$$r,\;q$$\end{document}r,q)-distribution. It is noted that the interaction of GSs and DLs are reported for the first time. The outcomes might be comprehended and beneficial not only in space and astrophysical environments but also in laboratory studies.
Collapse
Affiliation(s)
- Shahrina Akter
- Department of Mathematics, Chittagong University of Engineering and Technology, Chattogram, 4349, Bangladesh.,Department of Mathematics, Premier University, Chattogram, Bangladesh
| | - M G Hafez
- Department of Mathematics, Chittagong University of Engineering and Technology, Chattogram, 4349, Bangladesh.
| |
Collapse
|
3
|
Abd-Elzaher M, Atteya A. Obliquely overtaking collisions of electrostatic N-soliton in the Thomas-Fermi dense magnetoplasma. Waves in Random and Complex Media 2021:1-20. [DOI: 10.1080/17455030.2021.1974121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 08/24/2021] [Indexed: 09/02/2023]
Affiliation(s)
- M. Abd-Elzaher
- Department of Basic and Applied Sciences, Faculty of Engineering, Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt
| | - A. Atteya
- Department of Physics, Faculty of Science, Alexandria University, Alexandria, Egypt
| |
Collapse
|
4
|
Ding X, Lu S, Sun T, Murillo MS, Feng Y. Head-on collision of compressional shocks in two-dimensional Yukawa systems. Phys Rev E 2021; 103:013202. [PMID: 33601497 DOI: 10.1103/physreve.103.013202] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 12/01/2020] [Indexed: 11/07/2022]
Abstract
The head-on collision of compressional shocks in two-dimensional dusty plasmas is investigated using both molecular dynamical and Langevin simulations. Two compressional shocks are generated from the inward compressional boundaries in simulations. It is found that, during the collision of shocks, there is a generally existing time delay of shocks τ, which diminishes monotonically with the increasing compressional speed of boundaries, corresponding to the time resolution of the studied system. Dispersive shock waves (DSWs) are generated around the shock front for some conditions. It is also found that the period of the DSW decreases monotonically with the inward compressional speed of boundaries, more substantially than the time delay of shocks τ. When the inward compressional speed of boundaries increases further, the DSWs gradually vanish. We speculate that, for these high compressional speeds of boundaries, the period of the DSW might be reduced to a comparable timescale of the time delay of shocks τ, i.e., the time resolution of our studied system, or even shorter, thus the DSW reasonably vanishes.
Collapse
Affiliation(s)
- Xia Ding
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
| | - Shaoyu Lu
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
| | - Tianyue Sun
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
| | - M S Murillo
- Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA
| | - Yan Feng
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
| |
Collapse
|
5
|
Behery EE. Head-on collision of dust acoustic solitons in a nonextensive plasma with variable size dust grains of arbitrary charge. Phys Rev E 2016; 94:053205. [PMID: 27967123 DOI: 10.1103/physreve.94.053205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Indexed: 06/06/2023]
Abstract
The head-on collision of two dust acoustic solitons (DASs) in a nonextensive plasma with positive or negative dust grains fluid including the effect of dust size distribution (DSD) is studied. The phase shifts for the two solitons due to the collision are derived by applying the extended Poincaré-Lighthill-Kuo (PLK) method. The influences of the power law DSD and the nonextensivity of plasma particles on the characteristic properties of the head-on collision of DASs are analyzed. It is found that the phase shifts can vanish, only for the case of positive dust grains, for certain values and ranges of the dust grain radius and the entropic index of ions (q_{i}). Also, they undergo a cutoff in the range of q_{i}>1 for the subextensive distribution. A brief discussion of possible applications in laboratory and space plasmas is included.
Collapse
Affiliation(s)
- E E Behery
- Department of Physics, Faculty of Science, Damietta University, New Damietta 34517, Egypt
| |
Collapse
|
6
|
Zhang H, Duan WS, Qi X, Yang L. Head-on collision and overtaking collision between an envelope solitary wave and a KdV solitary wave in a dusty plasma. Sci Rep 2016; 6:21214. [PMID: 26868526 PMCID: PMC4751471 DOI: 10.1038/srep21214] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 01/15/2016] [Indexed: 11/09/2022] Open
Abstract
Head-on collision and overtaking collision between a KdV solitary wave and an envelope solitary wave are first studied in present paper by using Particle-in-cell (PIC) method in a dusty plasma. There are phase shifts of the KdV solitary wave in both head-on collision and the overtaking collision, while no phase shift is found for the envelop solitary wave in any cases. The remarkable difference between head-on collision and the overtaking collision is that the phase shift of KdV solitary wave increases as amplitude of KdV solitary wave increases in head-on collision, while it decreases as amplitude of the KdV solitary wave increases in the overtaking collision. It is found that the maximum amplitude during the collision process is less than sum of two amplitudes of both solitary waves, but is larger than either of the amplitude.
Collapse
Affiliation(s)
- Heng Zhang
- College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of Northwest Normal University, Lanzhou 730070, China
| | - Wen-Shan Duan
- College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of Northwest Normal University, Lanzhou 730070, China
| | - Xin Qi
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Lei Yang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,Department of Physics, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
7
|
Malik HK, Kumar R, Lonngren KE, Nishida Y. Collision of ion acoustic solitary waves in a magnetized plasma: Effect of dust grains and trapped electrons. Phys Rev E Stat Nonlin Soft Matter Phys 2015; 92:063107. [PMID: 26764838 DOI: 10.1103/physreve.92.063107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Indexed: 06/05/2023]
Abstract
The head-on collision of two ion acoustic solitary waves is investigated in a magnetized plasma containing trapped electrons and dust grains. For completeness, the fluctuations in dust grain charge are taken into account. By using the extended Poincaré-Lighthill-Kuo (PLK) perturbation method, an analytical expression is obtained for the phase shift that takes place due to the collision of the waves. How the phase shift behaves under the combined effect of trapped electrons and dust grains along with the finite temperature of ions is examined. A focus is given to uncover the situations of fluctuating charge and fixed charge on the dust grains in the plasma. Interestingly, the solitary waves acquire a larger phase shift and are delayed more in the case of dust grains having a fluctuating charge.
Collapse
Affiliation(s)
- Hitendra K Malik
- Plasma Waves and Particle Acceleration Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016, India
| | - Ravinder Kumar
- Department of Physics, Janta Vedic College Baraut, Uttar Pradesh 250 611, India
| | - Karl E Lonngren
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa 52242, USA
| | - Yasushi Nishida
- Plasma and Space Science Center, National Cheng Kung University, 1, Ta-Hsueh Road, Tainan 70101, Taiwan
| |
Collapse
|
8
|
Sharma SK, Boruah A, Bailung H. Head-on collision of dust-acoustic solitons in a strongly coupled dusty plasma. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 89:013110. [PMID: 24580349 DOI: 10.1103/physreve.89.013110] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Indexed: 06/03/2023]
Abstract
The collision between two counterpropagating dust acoustic solitary waves in a strongly coupled dusty plasma has been observed. The measured velocity and width of the solitary wave agree with the solution of the Korteweg-de Vries equation derived by using the generalized hydrodynamic model. The two counterpropagating solitary waves of equal amplitude merge into a single pulse with twice the individual soliton amplitude and then pass through each other. The solitons suffer a small time delay in propagation after collision. The measured delay time obtained from their trajectories is also presented.
Collapse
Affiliation(s)
- S K Sharma
- Physical Sciences Division, Institute of Advanced Study in Science & Technology Paschim Boragaon, Guwahati-781035, India
| | - A Boruah
- Physical Sciences Division, Institute of Advanced Study in Science & Technology Paschim Boragaon, Guwahati-781035, India
| | - H Bailung
- Physical Sciences Division, Institute of Advanced Study in Science & Technology Paschim Boragaon, Guwahati-781035, India
| |
Collapse
|
9
|
Durniak C, Samsonov D, Ralph JF, Zhdanov S, Morfill G. Dislocation dynamics during plastic deformations of complex plasma crystals. Phys Rev E Stat Nonlin Soft Matter Phys 2013; 88:053101. [PMID: 24329366 DOI: 10.1103/physreve.88.053101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Indexed: 06/03/2023]
Abstract
The internal structures of most periodic crystalline solids contain defects. This affects various important mechanical and thermal properties of crystals. Since it is very difficult and expensive to track the motion of individual atoms in real solids, macroscopic model systems, such as complex plasmas, are often used. Complex plasmas consist of micrometer-sized grains immersed into an ion-electron plasma. They exist in solidlike, liquidlike, and gaseouslike states and exhibit a range of nonlinear and dynamic effects, most of which have direct analogies in solids and liquids. Slabs of a monolayer hexagonal complex plasma were subjected to a cycle of uniaxial compression and decompression of large amplitudes to achieve plastic deformations, both in experiments and simulations. During the cycle, the internal structure of the lattice exhibited significant rearrangements. Dislocations (point defects) were generated and displaced in the stressed lattice. They tended to glide parallel to their Burgers vectors under load. It was found that the deformation cycle was macroscopically reversible but irreversible at the particle scale.
Collapse
Affiliation(s)
- C Durniak
- Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3GJ, England, United Kingdom
| | - D Samsonov
- Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3GJ, England, United Kingdom
| | - J F Ralph
- Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3GJ, England, United Kingdom
| | - S Zhdanov
- Max-Planck-Institut für Extraterrestrische Physik, D-85741 Garching, Germany
| | - G Morfill
- Max-Planck-Institut für Extraterrestrische Physik, D-85741 Garching, Germany
| |
Collapse
|
10
|
Oxtoby NP, Griffith EJ, Durniak C, Ralph JF, Samsonov D. Ideal gas behavior of a strongly coupled complex (dusty) plasma. Phys Rev Lett 2013; 111:015002. [PMID: 23863006 DOI: 10.1103/physrevlett.111.015002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Indexed: 06/02/2023]
Abstract
In a laboratory, a two-dimensional complex (dusty) plasma consists of a low-density ionized gas containing a confined suspension of Yukawa-coupled plastic microspheres. For an initial crystal-like form, we report ideal gas behavior in this strongly coupled system during shock-wave experiments. This evidence supports the use of the ideal gas law as the equation of state for soft crystals such as those formed by dusty plasmas.
Collapse
Affiliation(s)
- Neil P Oxtoby
- Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, L69 3GJ, United Kingdom
| | | | | | | | | |
Collapse
|
11
|
Verheest F, Hellberg MA, Hereman WA. Head-on collisions of electrostatic solitons in nonthermal plasmas. Phys Rev E Stat Nonlin Soft Matter Phys 2012; 86:036402. [PMID: 23031029 DOI: 10.1103/physreve.86.036402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Indexed: 06/01/2023]
Abstract
In contrast to overtaking interactions, head-on collisions between two electrostatic solitons can be dealt with only by use of an approximate method, which limits the range of validity but offers valuable insights. Treatments in the plasma physics literature all use assumptions in the stretching of space and time and in the expansion of the dependent variables that are seldom, if ever, discussed. All models force a separability to lowest order, corresponding to two linear waves with opposite but equally large velocities. A systematic exposition of the underlying hypotheses is illustrated by considering a plasma composed of cold ions and nonthermal electrons. This is general enough to yield critical compositions that lead to modified rather than standard Korteweg-de Vries equations, an aspect not discussed so far. The nonlinear evolution equations for both solitons and their phase shifts due to the collision are established. A Korteweg-de Vries description is the generic conclusion, except when the plasma composition is critical, rendering the nonlinearity in the evolution equations cubic, with concomitant repercussions on the phase shifts. In the latter case, the solitons can have either polarity, so combinations of negative and positive solitons can occur, contrary to the generic case, where both solitons necessarily have the same polarity.
Collapse
Affiliation(s)
- Frank Verheest
- Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium.
| | | | | |
Collapse
|
12
|
Abstract
Complex plasmas are macroscopic model systems of real solids and liquids, used to study underdamped dynamics and wave phenomena. Plastic deformations of complex plasma crystals under slow uniaxial compression have been studied experimentally and numerically. It is shown that the lattice becomes locally sheared and that this strain is relaxed by shear slips resulting in global uniform compression and heat generation. Shear slips generate pairs of dislocations which move in opposite directions at subsonic speeds.
Collapse
Affiliation(s)
- C Durniak
- Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, L69 3GJ, United Kingdom.
| | | |
Collapse
|