Correlated stopping of Coulomb clusters in a dense jellium target

Journal Article · Sun Jan 01 04:00:00 EST 1995 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States)

DOI:https://doi.org/10.1103/PhysRevE.51.619· OSTI ID:6702547

Deutsch, C ^[1]

---

1. Laboratoire de Physique des Gaz et des Plasmas, Batiment 212, Universite Paris XI, 91405 Orsay (France)

The strongly correlated stopping of [ital N] pointlike charges organized in clusters with a regular geometry is thoroughly investigated at high velocity as a linear and binary superposition of the stopping of a dicluster polarized with respect to the overall drift velocity. For [ital N][ge]3, [ital a] priori unexpected [ital N]-body and collective behaviors are identified in terms of variations for the target electron density, cluster topology, charge distribution, and projectile velocity. The target is featured as a homogeneous and dense electron jellium quantified with the Wigner coupling parameters [ital r][sub [ital S]]. A corresponding dielectric function is taken in a plasmon pole approximation, allowing for a quasianalytic and transparent analysis. A recurring trend of this study is an enhanced stopping due to charge correlation, increasing rapidly with [ital N]. A noticeable counterexample is afforded by a regular [ital N] chain of charges flowing parallel to its velocity. As a rule, in most practical cases of interest, correlated charges within a few atomic interdistances can experience a stopping that is enhanced by orders of magnitudes relative to the isolated charge case, when stopped in a target at ordinary matter density, with initial kinetic energy in the tens of keV/amu range.

• OSTI ID: 6702547
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States), Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States) Vol. 51:1; ISSN 1063-651X; ISSN PLEEE8
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC CLUSTERS
BEAM-PLASMA SYSTEMS
BEAMS
CHARGE DISTRIBUTION
CLUSTER BEAMS
COLLISIONS
CONFINEMENT
ELECTRON COLLISIONS
ELECTRON DENSITY
ELECTRON-ION COLLISIONS
INERTIAL CONFINEMENT
ION BEAMS
ION COLLISIONS
PLASMA CONFINEMENT
STOPPING POWER