Effects of Coulomb coupling on stopping power and a link to macroscopic transport

doi:10.1063/1.5095419

Title: Effects of Coulomb coupling on stopping power and a link to macroscopic transport

Abstract

Molecular dynamics simulations are used to assess the influence of Coulomb coupling on the energy evolution of charged projectiles in the classical one-component plasma. The average projectile kinetic energy is found to decrease linearly with time when ν_α/ω_p ≲ 10^–2, where να is the Coulomb collision frequency between the projectile and the medium, and ω_p is the plasma frequency. Stopping power is obtained from the slope of this curve. In comparison to the weakly coupled limit, strong Coulomb coupling causes the magnitude of the dimensionless stopping power, (a/k_BT)dE/dx, to increase, the Bragg peak to shift to several times the plasma thermal speed, and for the stopping power curve to broaden substantially. The rate of change of the total projectile kinetic energy averaged over many independent simulations is shown to consist of two measurable components: a component associated with a one-dimensional friction force and a thermal energy exchange rate. In the limit of a slow and massive projectile, these can be related to the macroscopic transport rates of self-diffusion and temperature relaxation in the plasma. Simulation results are compared with available theoretical models for stopping power, self-diffusion, and temperature relaxation.

Authors:

Bernstein, David J. ^[1];

^[1];

^[2]

Univ. of Iowa, Iowa City, IA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:: 2019-08-12

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Laboratory Directed Research and Development (LDRD) Program

OSTI Identifier:: 1565900

Alternate Identifier(s):: OSTI ID: 1556811

Report Number(s):: LA-UR-19-22415
Journal ID: ISSN 1070-664X; TRN: US2000936

Grant/Contract Number:: 89233218CNA000001

Resource Type:: Accepted Manuscript

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 26; Journal Issue: 8; Journal ID: ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats


                    Bernstein, David J., Baalrud, Scott D., and Daligault, Jérôme Olivier. Effects of Coulomb coupling on stopping power and a link to macroscopic transport.  United States: N. p., 2019. 
        Web.  doi:10.1063/1.5095419.

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                    Bernstein, David J., Baalrud, Scott D., & Daligault, Jérôme Olivier. Effects of Coulomb coupling on stopping power and a link to macroscopic transport.  United States.  doi:10.1063/1.5095419.

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                    Bernstein, David J., Baalrud, Scott D., and Daligault, Jérôme Olivier. Mon .  
        "Effects of Coulomb coupling on stopping power and a link to macroscopic transport".  United States.  doi:10.1063/1.5095419.  https://www.osti.gov/servlets/purl/1565900.

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@article{osti_1565900,

  title        = {Effects of Coulomb coupling on stopping power and a link to macroscopic transport},

  author       = {Bernstein, David J. and Baalrud, Scott D. and Daligault, Jérôme Olivier},

  abstractNote = {Molecular dynamics simulations are used to assess the influence of Coulomb coupling on the energy evolution of charged projectiles in the classical one-component plasma. The average projectile kinetic energy is found to decrease linearly with time when να/ωp ≲ 10–2, where να is the Coulomb collision frequency between the projectile and the medium, and ωp is the plasma frequency. Stopping power is obtained from the slope of this curve. In comparison to the weakly coupled limit, strong Coulomb coupling causes the magnitude of the dimensionless stopping power, (a/kBT)dE/dx, to increase, the Bragg peak to shift to several times the plasma thermal speed, and for the stopping power curve to broaden substantially. The rate of change of the total projectile kinetic energy averaged over many independent simulations is shown to consist of two measurable components: a component associated with a one-dimensional friction force and a thermal energy exchange rate. In the limit of a slow and massive projectile, these can be related to the macroscopic transport rates of self-diffusion and temperature relaxation in the plasma. Simulation results are compared with available theoretical models for stopping power, self-diffusion, and temperature relaxation.},

  doi          = {10.1063/1.5095419},

  journal      = {Physics of Plasmas},

  number       = 8,

  volume       = 26,

  place        = {United States},

  year         = {2019},

  month        = {8}

}

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DOI: 10.1063/1.5095419

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Works referencing / citing this record:

Exploring the crossover between high-energy-density plasma and ultracold neutral plasma physics
journal, October 2019

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Title: Effects of Coulomb coupling on stopping power and a link to macroscopic transport

Abstract

Citation Formats

Modified Enskog kinetic theory for strongly coupled plasmas journal, June 2015

Liquid-State Properties of a One-Component Plasma journal, February 2006

Stopping power of heavy ions in strongly coupled plasmas journal, June 1995

Charged-particle acceleration and energy loss in laser-produced plasmas journal, December 2000

Measurements of Ion Stopping Around the Bragg Peak in High-Energy-Density Plasmas journal, November 2015

Theory of interparticle correlations in dense, high-temperature plasmas. I. General formalism journal, September 1985

Molecular Dynamics Simulations of Classical Stopping Power journal, November 2013

Molecular-Dynamics Simulations of Electron-Ion Temperature Relaxation in a Classical Coulomb Plasma journal, September 2008

Effective potential theory for diffusion in binary ionic mixtures journal, January 2017

Charged-particle stopping powers in inertial confinement fusion plasmas journal, May 1993

Thermonuclear burn characteristics of compressed deuterium-tritium microspheres journal, January 1974

Effective potential kinetic theory for strongly coupled plasmas conference, January 2016

Meson-catalyzed fusion in ultradense plasmas journal, November 2018

Measurement of Charged-Particle Stopping in Warm Dense Plasma journal, May 2015

Classical and quantum-mechanical treatments of the energy loss of charged particles in dilute plasmas journal, April 1984

Dynamic structure of strongly coupled one-component plasmas journal, February 1991

Theory of interparticle correlations in dense, high-temperature plasmas. VIII. Shear viscosity journal, November 1986

Effective Potential Theory for Transport Coefficients across Coupling Regimes journal, June 2013

On Bogoliubov's kinetic equation for a spatially homogeneous plasma journal, July 1960

Statistical mechanics of simple coulomb systems journal, March 1980

Time-dependent stopping power and influence of an infinite magnetic field journal, March 1998

A finite material temperature model for ion energy deposition in ion‐driven inertial confinement fusion targets journal, November 1981

Stopping power of dense plasmas: The collisional method and limitations of the dielectric formalism journal, February 2018

Stopping of heavy ions in plasmas at strong coupling journal, February 1999

Extending plasma transport theory to strong coupling through the concept of an effective interaction potential journal, May 2014

Irreversible Processes in Ionized Gases journal, January 1960

Comparative merits of the memory function and dynamic local-field correction of the classical one-component plasma journal, May 2012

Statistical mechanics of dense ionized matter. III. Dynamical properties of the classical one-component plasma journal, March 1975

Stopping power of heavy-ion beams in strongly coupled plasmas journal, December 1993

Dynamic theory of correlations in strongly coupled, classical one-component plasmas: Glass transition in the generalized viscoelastic formalism journal, June 1987

Electronic stopping of ions in the low velocity limit journal, May 1995

Pair correlation functions of strongly coupled two-temperature plasma journal, September 2017

Energy loss of heavy ions in dense plasma. I. Linear and nonlinear Vlasov theory for the stopping power journal, February 1991

Experimental Validation of Low- Z Ion-Stopping Formalisms around the Bragg Peak in High-Energy-Density Plasmas journal, January 2019

Exploring the crossover between high-energy-density plasma and ultracold neutral plasma physics journal, October 2019

Modified Enskog kinetic theory for strongly coupled plasmas
journal, June 2015

Liquid-State Properties of a One-Component Plasma
journal, February 2006

Stopping power of heavy ions in strongly coupled plasmas
journal, June 1995

Charged-particle acceleration and energy loss in laser-produced plasmas
journal, December 2000

Measurements of Ion Stopping Around the Bragg Peak in High-Energy-Density Plasmas
journal, November 2015

Theory of interparticle correlations in dense, high-temperature plasmas. I. General formalism
journal, September 1985

Molecular Dynamics Simulations of Classical Stopping Power
journal, November 2013

Molecular-Dynamics Simulations of Electron-Ion Temperature Relaxation in a Classical Coulomb Plasma
journal, September 2008

Effective potential theory for diffusion in binary ionic mixtures
journal, January 2017

Charged-particle stopping powers in inertial confinement fusion plasmas
journal, May 1993

Thermonuclear burn characteristics of compressed deuterium-tritium microspheres
journal, January 1974

Effective potential kinetic theory for strongly coupled plasmas
conference, January 2016

Meson-catalyzed fusion in ultradense plasmas
journal, November 2018

Measurement of Charged-Particle Stopping in Warm Dense Plasma
journal, May 2015

Classical and quantum-mechanical treatments of the energy loss of charged particles in dilute plasmas
journal, April 1984

Dynamic structure of strongly coupled one-component plasmas
journal, February 1991

Theory of interparticle correlations in dense, high-temperature plasmas. VIII. Shear viscosity
journal, November 1986

Effective Potential Theory for Transport Coefficients across Coupling Regimes
journal, June 2013

On Bogoliubov's kinetic equation for a spatially homogeneous plasma
journal, July 1960

Statistical mechanics of simple coulomb systems
journal, March 1980

Time-dependent stopping power and influence of an infinite magnetic field
journal, March 1998

A finite material temperature model for ion energy deposition in ion‐driven inertial confinement fusion targets
journal, November 1981

Stopping power of dense plasmas: The collisional method and limitations of the dielectric formalism
journal, February 2018

Stopping of heavy ions in plasmas at strong coupling
journal, February 1999

Extending plasma transport theory to strong coupling through the concept of an effective interaction potential
journal, May 2014

Irreversible Processes in Ionized Gases
journal, January 1960

Comparative merits of the memory function and dynamic local-field correction of the classical one-component plasma
journal, May 2012

Statistical mechanics of dense ionized matter. III. Dynamical properties of the classical one-component plasma
journal, March 1975

Stopping power of heavy-ion beams in strongly coupled plasmas
journal, December 1993

Dynamic theory of correlations in strongly coupled, classical one-component plasmas: Glass transition in the generalized viscoelastic formalism
journal, June 1987

Electronic stopping of ions in the low velocity limit
journal, May 1995

Pair correlation functions of strongly coupled two-temperature plasma
journal, September 2017

Energy loss of heavy ions in dense plasma. I. Linear and nonlinear Vlasov theory for the stopping power
journal, February 1991

Experimental Validation of Low- $Z$ Ion-Stopping Formalisms around the Bragg Peak in High-Energy-Density Plasmas
journal, January 2019

Exploring the crossover between high-energy-density plasma and ultracold neutral plasma physics
journal, October 2019