Stopping Power in Semiclassical, Collisional Plasmas

Arkhipov, Yu. V.; Baimbetov, F. B.; Davletov, A. E.

doi:10.1238/physica.regular.063a00194

Cited by 17 publications

(16 citation statements)

References 15 publications

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“…The problem was thoroughly analyzed within the RPA [54,55,[61][62][63] and beyond by introducing an analytical formula for the LFC [54,[64][65][66][67], derived within the T -matrix approach [57,68], the method of effective potentials [69], or using the Mermin or more sophisticated models for the dielectric function [27] to name a few.…”

Section: Polarization Stopping Powermentioning

confidence: 99%

“…(69) We observe that in the long-wavelength approximation, when ω 1 (k → 0) ω p , this expression (69) reduces to the generalized Drude-Lorentz model (19) if we choose Q 1 (k,w) = Q 1 (0,ω) = iν(ω) and that this model is unable to incorporate the asymptotic form (8), i.e., we have that −1 MM1 (k,w → ∞) 1 + ω 2 p /w 2 + · · · . Certainly, for a constant collision frequency or with Q 1 (k,w) = Q 1 (k,w = 0) = ih(k), h(k) > 0, the fact that the loss function L 1 (k,ω) = − Im −1 MM1 (k,ω)/ω has finite moments {C 0 (k),0,C 2 } can be easily checked by direct (analytic) integration.…”

Section: Three-moment Model Vs the Generalized Drude-lorentz Modelmentioning

confidence: 99%

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Dielectric function of dense plasmas, their stopping power, and sum rules

et al. 2014

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Mathematical, particularly, asymptotic properties of the random-phase approximation, Mermin approximation, and extended Mermin-type approximation of the coupled plasma dielectric function are analyzed within the method of moments. These models are generalized for two-component plasmas. Some drawbacks and advantages of the above models are pointed out. The two-component plasma stopping power is shown to be enhanced with respect to that of the electron fluid.

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Section: Polarization Stopping Powermentioning

confidence: 99%

Section: Three-moment Model Vs the Generalized Drude-lorentz Modelmentioning

confidence: 99%

Dielectric function of dense plasmas, their stopping power, and sum rules

et al. 2014

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“…is the effective electron-ion collision frequency [31]. The generalized Coulomb logarithm is given by [32] ln…”

Section: Local Field Correctionsmentioning

confidence: 99%

Discrimination of Underwater Materials Located on a Declined Seabed

Liang¹,

Hoshino²,

Motooka³

2001

Jpn. J. Appl. Phys.

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We present simplified expressions for the dynamic structure factor, or form factor S(k, ω), which is the quantity describing the inelastic x-ray scattering cross section from a dense plasma or a simple liquid. Our results, based on the random phase approximation (RPA) for the treatment on the charged particle coupling, are compared with analytical expressions for the free electron dynamic structure factor which include effects of strong coupling in both classical and degenerate plasmas. We will show that these modifications introduce minimal corrections to the RPA for typical conditions found in recent non-collective x-ray Thomson scattering experiment on solid density isochorically heated laser plasmas. On the other hand, strong collective scattering may exhibit significant deviations from the RPA. The results shown in this work can be applied to interpreting future x-ray scattering in warm dense plasmas occurring in inertial confinement fusion experiments or for the modelling of solid density matter found in the interior of planets.

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“…The dense plasma is formed in the experiments on heavy ion‐driven fusion, experiments at the National Ignition Facility, and magnetized Z‐pinch experiments . Currently, a large number of theoretical and experimental studies of physical processes that determine the design of the thermonuclear target are carried out. The study of energy losses of charged particles in the plasma is of great importance for dense plasma physics, as well as for solution of the problems of inertial fusion .…”

Section: Introductionmentioning

confidence: 99%

Dynamical properties of inertial confinement fusion plasmas

Kodanova

Рамазанов

Khikmetov

et al. 2018

Contributions to Plasma Physics

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In this paper, we calculate the stopping power and temperature relaxation of dense plasmas on the basis of the Coulomb logarithm using the effective potentials. These potentials take into account long-range multi-particle screening effects and short-range quantum mechanical effects in two-temperature plasmas. Ion energy losses in the plasma for different values of temperature and plasma density are calculated. The obtained results are compared with the theoretical works of other authors and with the results of molecular dynamics simulations. KEYWORDSCoulomb logarithm, dense plasma, effective potentials, inertial confinement fusion, stopping power 1

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Stopping Power in Semiclassical, Collisional Plasmas

Cited by 17 publications

References 15 publications

Dielectric function of dense plasmas, their stopping power, and sum rules

Dielectric function of dense plasmas, their stopping power, and sum rules

Discrimination of Underwater Materials Located on a Declined Seabed

Dynamical properties of inertial confinement fusion plasmas

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