中文
相关论文

相关论文: New electro-acoustic waves in a degenerate quantum…

200 篇论文

The formation and propagation of small amplitude Heavy-ion-acoustic (HIA) solitary waves and double layers in an unmagnetized collisionless multi-component plasma system consisting of superthermal electrons, Boltzmann distributed light…

等离子体物理 · 物理学 2017-07-19 M. G. Shah , M. M. Rahman , M. R. Hossen , A. A. Mamun

A dispersion equation, which describes the interaction of low density electron beam with a degenerate electron quantum plasma, is derived and examined for some interesting cases. In addition to the instabilities similar to those for…

等离子体物理 · 物理学 2015-05-14 Levan N. Tsintsadze , Nodar L. Tsintsadze

A rigorous theoretical investigation has been made on electron acoustic wave propagating in unmagnetized collisionless plasma consisting of a cold electron fluid, non-thermal hot electrons and stationary ions. Based on the pseudo-potential…

斑图形成与孤子 · 物理学 2010-04-14 S. A. El-Wakil , E. K. El-Shewy , H. M. Abd-El-Hamid , E. M. Abulwafa

Surface modes are coupled electromagnetic/electrostatic excitations of free electrons near the vacuum-plasma interface and can be excited on a sufficiently dense plasma half-space. They propagate along the surface plane and decay in either…

等离子体物理 · 物理学 2009-11-13 M. Lazar , P. K. Shukla , A. Smolyakov

Radiative, gravitational surface waves are investigated at the interface of high density and low temperature, magnetized incompressible electron-ion plasmas in the presence of dense radiation electromagnetic radiation pressure (DEMRP). The…

等离子体物理 · 物理学 2023-11-28 A. Asma , Ch. Rozina , I. Zafar , S. Poedts

We carry out a systematic study of the dispersion relation for linear electrostatic waves in an arbitrarily degenerate quantum electron plasma. We solve for the complex frequency spectrum for arbitrary values of wavenumber $k$ and level of…

等离子体物理 · 物理学 2016-04-20 Shane Rightley , Dmitri Uzdensky

The nonlinear dynamics of electron-acoustic localized structures in a collisionless and unmagnetized plasma consisting of "cool" inertial electrons, "hot" electrons having a kappa distribution, and stationary ions is studied. The…

太阳与恒星天体物理 · 物理学 2011-08-18 Ashkbiz Danehkar , Nareshpal Singh Saini , Manfred A. Hellberg , Ioannis Kourakis

The basic properties of the nucleus-acoustic (NA) solitary waves (SWs) are investigated in a super-dense self-gravitating magnetized quantum plasma (SDSGMQP) system in the presence of an external magnetic field, whose constituents are the…

等离子体物理 · 物理学 2018-05-09 D. M. S. Zaman , M. Amina , A. A. Mamun

The reductive perturbation approach was used to explore the nonlinear propagation of fast (compressive) and slow (rarefactive) electron-position (EP) magneto-acoustic (EPMA) modes in an EP plasma medium. The solitary wave solution of the…

等离子体物理 · 物理学 2024-06-19 T. I. Rajib , S. Sultana

Electromagnetic (EM) waves/disturbances are typically the best means to understand and analyze an ionized medium like plasma. However, the propagation of electromagnetic waves with frequency lower than the plasma frequency is prohibited by…

等离子体物理 · 物理学 2020-02-25 Sharad Kumar Yadav , Ratan Kumar Bera , Deepa Verma , Amita Das , Predhiman Kaw

The nonlinear propagation of dust-acoustic (DA) waves in a magnetized dusty plasma with a pair of trapped ions is investigated. Starting from a set of hydrodynamic equations for massive dust fluids as well as kinetic Vlasov equations for…

等离子体物理 · 物理学 2017-11-20 A. P. Misra

We propose a new acceleration mechanism for charged particles by using cylindrical or spherical non-linear acoustic waves propagating in ion-electron plasma. The acoustic wave, which is described by the cylindrical or spherical Kortweg-de…

高能天体物理现象 · 物理学 2018-12-19 Hideki Ishihara , Ken Matsuno , Masaaki Takahashi , Syuto Teramae

Two strong simultaneous resonances of scattering--double-resonant extremely asymmetrical scattering (DEAS)--are predicted in two parallel, oblique, periodic Bragg arrays separated by a gap, when the scattered wave propagates parallel to the…

光学 · 物理学 2007-05-23 D. K. Gramotnev , T. A. Nieminen

The formation of the gigantic dust-acoustic rouge waves (DARWs) in an electron depleted unmagnetized opposite polarity dusty plasma system is theoretically observed for the first time. The nonlinear Schr\"{o}dinger equation (derived by…

等离子体物理 · 物理学 2019-09-30 J. N. Sikta , N. A. Chowdhury , A. Mannan , S. Sultana , A. A. Mamun

In this paper we re-examine the one-dimensional interaction of electromagnetic and ion acoustic waves in a plasma. Our model is similar to one solved by Rao et al. (Phys. Fluids, vol. 26, 2488 (1983)) under a number of analytical…

chao-dyn · 物理学 2009-10-28 Felipe B. Rizzato , Sergio R. Lopes , Abraham C. -L. Chian

Electrostatic waves in a collision-free unmagnetized plasma of electrons with fixed ions are investigated for electron equilibrium velocity distribution functions that deviate slightly from Maxwellian. Of interest are undamped waves that…

等离子体物理 · 物理学 2015-06-05 F. Valentini , D. Perrone , F. Califano , F. Pegoraro , P. Veltri , P. J. Morrison , T. M. O'Neil

Dissociative electron attachment (DEA) is one of the processes that shows a strong coupling between the nuclear and electronic degrees of freedom in a molecule. This coupling results in an efficient transformation of the kinetic energy of…

化学物理 · 物理学 2024-04-17 Suvasis Swain , Akshay Kumar , E. Krishnakumar , Vaibhav S. Prabhudesai

The propagation of ion-acoustic waves (IAWs) in a collisionless unmagnetized self-gravitating degenerate quantum plasma system (SG-DQPS) has been studied theoretically for the first time. A nonlinear Schr\"{o}dinger equation is derived by…

等离子体物理 · 物理学 2018-03-02 S. Khondaker , N. A. Chowdhury , A. Mannan , A. A. Mamun

In the field of fundamental plasma waves, direct observation of electron-acoustic wave (EAW) propagation in laboratory plasmas remains a challenging problem, mainly because of heavy damping. In the MaPLE device, the wave is observed and…

等离子体物理 · 物理学 2017-06-28 Satyajit Chowdhury , Subir Biswas , Nikhil Chakrabarti , Rabindranath Pal

A theory for the ion acoustic wave damping in dense plasmas and warm dense matter, accounting for the Umklapp process, is presented. A higher decay rate compared to the prediction from the Landau damping theory is predicted for high-Z dense…

等离子体物理 · 物理学 2015-05-20 S. Son , Sung Joon Moon