The frequency and damping of ion acoustic waves in hydrocarbon (CH) and two-ion-species plasmas

Williams, E. A.; Berger, R.L.; Drake, R. P.; Rubenchik, A. M.; Bauer, Bruno; Meyerhofer, D. D.; Gaeris, A. C.; Johnston, T. W.

doi:10.1063/1.871101

Cited by 149 publications

(74 citation statements)

References 29 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[8], [9] In the collisionless limit [3], [4], the coupling between species occurs only through the self-consistent electric field, and the general dispersion relation for any number of ion species is easily obtained. When collisions between species are important, the calculation is tedious beyond two species if the collisional coupling between all species is retained.…”

Section: Two Species Ion Acoustic Wavesmentioning

confidence: 99%

“…There have been numerous con-tributions to the theory of multiple-species ion waves within the context of the hydrodynamic equations [8], [9] or the Vlasov equation coupled with Maxwell's equations. [3], [4], [10], [11], [12] The theory presented here is (to our knowledge) the first to consider the general case where both interspecies collisions and Landau damping are treated. The hydrodynamic equations are valid in the limit that the self-collisions and interspecies collisions are frequent enough to maintain an isotropic Maxwellian; that is the ion-ion mean free path, λ ij = V i /ν i,j (where…”

Section: Introductionmentioning

confidence: 99%

“…Such modes are well-known. [3,4], [8]- [12] In addition to the practical applications, the theory of acoustic waves in multiple-species plasma is inherently interesting problem in plasma physics. There have been numerous con-tributions to the theory of multiple-species ion waves within the context of the hydrodynamic equations [8], [9] or the Vlasov equation coupled with Maxwell's equations.…”

Section: Introductionmentioning

confidence: 99%

“…[3], [4] Thomson scatter from the ion waves in a gold-beryllium plasma has been used as an ion temperature diagnostic. [5] High-Z gases, such as argon or xenon, have been added to low-Z plasma for spectroscopic diagnosis or to create X-ray sources.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Frequency and Damping of Ion Acoustic Waves in Collisional and Collisionless Two-species Plasma

Berger¹,

Valeo²

2004

View full text Add to dashboard Cite

The dispersion properties of ion acoustic waves (IAW) are sensitive to the strength of ion-ion collisions in multi-species plasma in which the different species usually have differing charge-tomass ratios. The modification of the frequency and damping of the fast and slow acoustic modes in a plasma composed of light (low Z) and heavy (high Z) ions is considered. In the fluid limit where the light ion scattering mean free path, λ lh is smaller than the acoustic wavelength, λ = 2π/k, the interspecies friction and heat flow carried by the light ions scattering from the heavy ions causes the damping. In the collisionless limit, kλ lh >> 1, Landau damping by the light ions provides the dissipation. In the intermediate regime when kλ lh ∼ 1, the damping is at least as large as the sum of the collisional and Landau damping. * Electronic address: berger5@llnl.gov

show abstract

Section: Two Species Ion Acoustic Wavesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Frequency and Damping of Ion Acoustic Waves in Collisional and Collisionless Two-species Plasma

Berger¹,

Valeo²

2004

View full text Add to dashboard Cite

show abstract

“…The linear kinetic theory of ion acoustic waves in two ion species plasmas was researched by E. A. Williams et al in detail. 19 There, kλ De = 0.1 was taken, the linear frequency of the IAW was thought a) Electronic mail: zheng chunyang@iapcm.ac.cn to be the resonance frequency of the IAW. In this paper, we can see when kλ De = 0.1, the linear frequency of the IAW was close to the frequency of the small amplitude nonlinear IAW (discussed later).…”

Section: Introductionmentioning

confidence: 99%

Excitation of nonlinear ion acoustic waves in CH plasmas

et al. 2016

View full text Add to dashboard Cite

Excitation of nonlinear ion acoustic wave (IAW) by an external electric field is demonstrated by Vlasov simulation. The frequency calculated by the dispersion relation with no damping is verified much closer to the resonance frequency of the small-amplitude nonlinear IAW than that calculated by the linear dispersion relation. When the wave number kλ De increases, the linear Landau damping of the fast mode (its phase velocity is greater than any ion's thermal velocity) increases obviously in the region of T i /T e < 0.2 in which the fast mode is weakly damped mode. As a result, the deviation between the frequency calculated by the linear dispersion relation and that by the dispersion relation with no damping becomes larger with kλ De increasing. When kλ De is not large, such as kλ De = 0.1, 0.3, 0.5, the nonlinear IAW can be excited by the driver with the linear frequency of the modes. However, when kλ De is large, such as kλ De = 0.7, the linear frequency can not be applied to exciting the nonlinear IAW, while the frequency calculated by the dispersion relation with no damping can be applied to exciting the nonlinear IAW.

show abstract

Thomson Scattering in Inertial Confinement Fusion Research

Glenzer

2000

Contrib. Plasma Phys.

View full text Add to dashboard Cite

Thomson scattering with a short‐wavelength probe laser has been developed into a standard diagnostic of high‐density inertial confinement fusion plasmas that are produced with high energy lasers. A the Nova laser facility, we have applied Thomson scattering to investigate fundamental properties of ion acoustic or electron plasma (Langmuir) waves such as their dispersion and diagnostic value in two‐ion species plasmas as well as their saturation and decay. Moreover, we have used Thomson scattering in a large number of studies that require accurate characterization of plasma conditions to benchmark radiation hydrodynamic calculations and to test kinetics modelling. In particular, the implementation of an ultraviolet probe laser that operates at 263 nm (4ω) has allowed us to accurately measure the electron and ion temperature in high‐density gas‐filled hohlraums and to investigate scalings to high gas fill densities characterizing the low‐Z gas plasma as well as the high‐Z wall plasma. These measurements have provided us with a unique data set that we use for comparisons with integrated radiation‐hydrodynamic modelling using the code LASNEX. This code is presently being applied o design fusion targets for the National Ignition Facility. The Thomson scattering experiments show the existence of electron temperature gradients in the gas plasma that are well modelled when including a self‐consistent calculation of magnetic fields. Furthermore, the temperature data have been applied to test kinetics calculations of x‐ray spectra observed from these hohlraum plasmas.

show abstract

The frequency and damping of ion acoustic waves in hydrocarbon (CH) and two-ion-species plasmas

Cited by 149 publications

References 29 publications

The Frequency and Damping of Ion Acoustic Waves in Collisional and Collisionless Two-species Plasma

The Frequency and Damping of Ion Acoustic Waves in Collisional and Collisionless Two-species Plasma

Excitation of nonlinear ion acoustic waves in CH plasmas

Thomson Scattering in Inertial Confinement Fusion Research

Contact Info

Product

Resources

About