Ionization Potential Depression in Hot Dense Plasmas Through a Pure Classical Model

被引：15

作者：

Calisti, A. ^{[1
]}

Ferri, S. ^{[1
]}

Talin, B. ^{[1
]}

机构：

[1] Aix Marseille Univ, CNRS, PIIM UMR 7345, F-13397 Marseille, France

来源：

CONTRIBUTIONS TO PLASMA PHYSICS | 2015年 / 55卷 / 05期

关键词：

Classical molecular dynamics; ionization potential depression; multi component plasma;

D O I：

10.1002/ctpp.201400087

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The ionization potential of an ion embedded in a plasma, lowered due to the whole of the charged particles (ions and electrons) interacting with this ion, is the so-called plasma effect. A numerical plasma model based on classical molecular dynamics has been developed recently. It is capable to describe a neutral plasma at equilibrium involving ions of various charge states of the same atom together with electrons. This code is used here to investigate the ionization potential depression (IPD). The study of the IPD is illustrated and discussed for aluminum plasmas at mid and solid density and electron temperatures varying from 50eV to 190eV. The method relies on a sampling of the total potential energy of the electron located at an ion being ionized. The potential energy of such electron results from all of the interacting charged particles interacting with it. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：360 / 365

页数：6

共 14 条

[1] Classical Molecular Dynamics Model for Coupled Two-Component Plasmas - Ionization Balance and Time Considerations [J].

Calisti, A. ;

Talin, B. .

CONTRIBUTIONS TO PLASMA PHYSICS, 2011, 51 (06) :524-528

[2] Classical molecular dynamics model for coupled two component plasmas [J].

Calisti, A. ;

Ferri, S. ;

Talin, B. .

HIGH ENERGY DENSITY PHYSICS, 2009, 5 (04) :307-311

[3]

Chung H.K., 2005, HIGH ENERG DENS PHYS, V1, P312, DOI 10.1016/j.hedp.2005.07.001

[4] Direct Measurements of the Ionization Potential Depression in a Dense Plasma [J].

Ciricosta, O. ;

Vinko, S. M. ;

Chung, H. -K. ;

Cho, B. -I. ;

Brown, C. R. D. ;

Burian, T. ;

Chalupsky, J. ;

Engelhorn, K. ;

Falcone, R. W. ;

Graves, C. ;

Hajkova, V. ;

Higginbotham, A. ;

Juha, L. ;

Krzywinski, J. ;

Lee, H. J. ;

Messerschmidt, M. ;

Murphy, C. D. ;

Ping, Y. ;

Rackstraw, D. S. ;

Scherz, A. ;

Schlotter, W. ;

Toleikis, S. ;

Turner, J. J. ;

Vysin, L. ;

Wang, T. ;

Wu, B. ;

Zastrau, U. ;

Zhu, D. ;

Lee, R. W. ;

Heimann, P. ;

Nagler, B. ;

Wark, J. S. .

PHYSICAL REVIEW LETTERS, 2012, 109 (06)

[5] Continuum lowering - A new perspective [J].

Crowley, B. J. B. .

HIGH ENERGY DENSITY PHYSICS, 2014, 13 :84-102

[6] LOWERING OF THE IONIZATION ENERGY FOR A PLASMA IN THERMODYNAMIC EQUILIBRIUM [J].

ECKER, G ;

KROLL, W .

PHYSICS OF FLUIDS, 1963, 6 (01) :62-69

[7] Observations of Continuum Depression in Warm Dense Matter with X-Ray Thomson Scattering [J].

Fletcher, L. B. ;

Kritcher, A. L. ;

Pak, A. ;

Ma, T. ;

Doeppner, T. ;

Fortmann, C. ;

Divol, L. ;

Jones, O. S. ;

Landen, O. L. ;

Scott, H. A. ;

Vorberger, J. ;

Chapman, D. A. ;

Gericke, D. O. ;

Mattern, B. A. ;

Seidler, G. T. ;

Gregori, G. ;

Falcone, R. W. ;

Glenzer, S. H. .

PHYSICAL REVIEW LETTERS, 2014, 112 (14)

[8] Modeling quantum processes in classical molecular dynamics simulations of dense plasmas [J].

Hau-Riege, S. P. ;

Weisheit, J. ;

Castor, J. I. ;

London, R. A. ;

Scott, H. ;

Richards, D. F. .

NEW JOURNAL OF PHYSICS, 2013, 15

[9] Observations of the Effect of Ionization-Potential Depression in Hot Dense Plasma [J].

Hoarty, D. J. ;

Allan, P. ;

James, S. F. ;

Brown, C. R. D. ;

Hobbs, L. M. R. ;

Hill, M. P. ;

Harris, J. W. O. ;

Morton, J. ;

Brookes, M. G. ;

Shepherd, R. ;

Dunn, J. ;

Chen, H. ;

Von Marley, E. ;

Beiersdorfer, P. ;

Chung, H. K. ;

Lee, R. W. ;

Brown, G. ;

Emig, J. .

PHYSICAL REVIEW LETTERS, 2013, 110 (26)

[10] A plea for a reexamination of ionization potential depression measurements [J].

Iglesias, Carlos A. .

HIGH ENERGY DENSITY PHYSICS, 2014, 12 :5-11

← 1 2 →