Oscillations in mean captureQvalues as functions of the projectile charge in slowXeq+-He (25≤q≤44) collisions

Stopping highly charged ions in a laser-cooled one component plasma of ions

“…However if v p approaches the thermal velocity v th this approximation becomes invalid since the motion of the 24 Mg + ions is strongly influenced by the laser.…”

“…In the simulation we concentrate on the energy loss due to the Coulomb-interaction of the projectile with the target ions and do not consider other means of energy loss like excitation, ionization and charge exchange [23][24][25]. Particularly, the ionization time in the two body charge exchange process 24 Mg 1+ + 100 X 40+ → 24 Mg 2+ + 100 X 39+ can be estimated to several thousand seconds [26].…”

“…Particularly, the ionization time in the two body charge exchange process 24 Mg 1+ + 100 X 40+ → 24 Mg 2+ + 100 X 39+ can be estimated to several thousand seconds [26]. During the passage of the projectile the Coulomb-interaction of all particles with all particles is computed at each time step, thus including the interaction of target ions with both the projectile and other target ions.…”

“…No laser cooling is included in the simulation, allowing for direct observation of the energy dissipation in the plasma and the development of the velocity distribution of the 24 Mg + ions.…”

“…Our study focuses on the energy transfer from highly charged ions of some 100 meV initial kinetic energy to a crystalline ensemble of N = 10 5 24 Mg + ions confined in a three-dimensional harmonic potential (for a comprehensive list of the parameter region covered please refer to Table 1). The radial confinement radial is strong compared to the longitudinal confinement long .…”