Enhanced damping of ion acoustic waves in dense plasmas

Son, S.; Moon, Sung Joon
January 2011
Physics of Plasmas;Jan2011, Vol. 18 Issue 1, p014505
Academic Journal
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 plasmas, where the electron density ranges from 1021 to 1024 cm-3 and the electron temperature is moderately higher than the Fermi energy.


Related Articles

  • Time-resolved temperature measurement of a pinched plasma using the dispersive x-ray analysis of the continuum emission. Venneri, F.; Gerdin, G. // Review of Scientific Instruments;Dec1990, Vol. 61 Issue 12, p3797 

    The dispersive analysis of the x-ray continuum is employed to determine the electron temperature of a dense pinched plasma. A curved crystal spectrometer was used to obtain the desired dispersion, and two or more p-i-n (doubly diffused silicon) diodes were used to monitor the time-resolved...

  • Plasma spectroscopy in inertial confinement fusion and soft x-ray laser research. Griem, Hans R. // Physics of Fluids B: Plasma Physics;Jul92, Vol. 4 Issue 7, p2346 

    After a review of the basic theory of quantitative spectroscopy of atoms and incompletely stripped ions immersed in plasmas, applications to diagnostics and modeling of dense plasmas are discussed. Density and temperature measurements are emphasized, together with magnetic and electric-field...

  • Investigation Of Plasma Discharges Within Maja-PF Device Operated With Tungsten Inserts In The Central Electrode. Malinowski, K.; Skladnik-Sadowska, E.; Ladygina, M.; Jakubowski, L.; Sadowski, M. J. // AIP Conference Proceedings;3/19/2008, Vol. 993 Issue 1, p357 

    The paper presents results of recent experimental studies with a MAJA-PF plasma-focus facility, as carried out for two different configurations of the end-plate of the central electrode. The main aim was to investigate an influence of the shape and material of the electrode end-plate on the...

  • Nonlinear Propagation of Dust-Ion-Acoustic Waves in a Degenerate Dense Plasma. Zobaer, M. S.; Roy, N.; Mamun, A. A. // Journal of Modern Physics (21531196);Jul2012, Vol. 3 Issue 7, p604 

    Nonlinear propagation of dust-ion-acoustic waves in a degenerate dense plasma (with the constituents being degenerate, for both the limits non-relativistic or ultra-relativistic) have been investigated by the reductive perturbation method. The Korteweg de-Vries (K-dV) equation and Burger's...

  • A Simple Method For The Time-Resolved Measurement Of Electron Temperature In A Z-pinch. Robledo-Martinez, Arturo // AIP Conference Proceedings;2006, Vol. 875 Issue 1, p27 

    A new method for measuring the electron temperature in a Z-pinch plasma with time resolution is presented here. PIN diodes fitted with different filters were employed to detect the X-radiation in separate energy bands. By comparison of the relative intensities of the X-ray pulses, a...

  • Performance of a permanent-magnet helicon source at 27 and 13 MHz. Chen, Francis F. // Physics of Plasmas;Sep2012, Vol. 19 Issue 9, p093509 

    A small helicon source is used to create dense plasma and inject it into a large chamber. A permanent magnet is used for the dc magnetic field (B-field), making the system very simple and compact. Though theory predicts that better antenna coupling will occur at 27.12 MHz, it was found that...

  • Self-organization of plasma due to electron beam instability. Liu, Z. J.; Shao-ping Zhu; Cao, L. H.; Zheng, C. Y.; Bin Li // Physics of Plasmas;May2006, Vol. 13 Issue 5, p053104 

    The evolution of electron beams in dense plasmas has been investigated by using two-dimensional particle-in-cell simulations with mobile and immobile ions, respectively. It is shown that electron beams are split into many filaments at the beginning due to the Weibel instability, and then...

  • Measurements of Plasma Density in a Fast and Compact Plasma Focus Operating at Hundreds of Joules. Pavez, Cristian; Silva, Patricio; Moreno, José; Soto, Leopoldo // AIP Conference Proceedings;2006, Vol. 875 Issue 1, p435 

    It is known that there are plasma parameters that remain relatively constant for plasma focus facilities operating in a wide range of de energy, from 1kJ to 1MJ, such as: electron density, temperature and plasma energy density. Particularly the electron density is of the order of 1025m-3....

  • Response to 'Comment on 'Three-dimensional numerical investigation of electron transport with rotating spoke in a cylindrical anode layer Hall plasma accelerator'' [Phys. Plasmas 20, 014701 (2013)]. Tang, D. L.; Geng, S. F.; Qiu, X. M.; Chu, Paul K. // Physics of Plasmas;Jan2013, Vol. 20 Issue 1, p014702 

    The numerical simulation described in our paper [D. L. Tang et al., Phys. Plasmas 19, 073519 (2012)] shows a rotating dense plasma structure, which is the critical characteristic of the rotating spoke. The simulated rotating spoke has a frequency of 12.5 MHz with a rotational speed of ∼1.0...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics