Molecular dynamics simulations of strongly coupled particle beams

Toepffer, C.; Seurer, M.; Spreiter, Q.

doi:10.1016/s0920-3796(96)00466-8

Cited by 7 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some examples of applications of the MD method to Coulomb systems are the nonlinear stopping power of heavy ions in nonideal plasmas [I, 21, the physics of heavy ion beams in storage rings like intrabeam scattering, beam cooling and beam crystallization [3] and electric microfields and collective modes [4] in strongly coupled liquid-like plasmas. Here we present a MD simulation study of the short time dynamics in a one component plasma (OCP) where the system starts in a nonequilibrium state and then propagates towards equilibrium within a typical correlation or relaxation time.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulations of the Dynamics of Correlations and Relaxation in an OCP

Zwicknagel

1999

Contrib. Plasma Phys.

View full text Add to dashboard Cite

The short time dynamics of the transition from an initial nonequilibrium state to an equilibrium state is investigated for an OCP by molecular dynamics (MD) simulations. Two different initial configurations are considered which allow to study either the build-up of binary correlations or the relaxation of the single particle distribution. For a weakly coupled plasma the observed time scale for relaxation is much longer than the characteristic time, for the correlation build-up while the two time s c a l~ become equal for nonideal plasmas with r > 0.5.

show abstract

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulations of the Dynamics of Correlations and Relaxation in an OCP

Zwicknagel

1999

Contrib. Plasma Phys.

View full text Add to dashboard Cite

show abstract

“…They have been applied successfully for low current beams and studies of e.g. beam crystallization and related issues [6,7,8,9,101. Because the numerical effort scales like N 2 the computational effort is, however, prohibitive for high current beams which require at least N -107.…”

Section: The Particle-core-molecular-dynamics Methodsmentioning

confidence: 99%

Intrabeam scattering and halo formation in intense ion beams

Uhlmann¹

2002

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. An essential problem for the operation of high current linacs is the control of beam losses due to halo formation. Here we concentrate on an interplay between intrabeam scattering (IBS) and the incidence of particles which are driven to high amplitudes by resonances with the nonlinear space charge fields of a mismatched beam. For these studies, we developed a particlecore-molecular-dynamics (PCMD) method which suitably joins the time evolution in framework of the envelope equations and a calculation of HBS between pseudo-particles with a renormalized charge. With this technique we investigated continuous KV-beams in a FODO channel. Our first results strongly suggest, that IBS in fact supports the halo formation in a mismatched beam.

show abstract