Energy loss of a charged particle in a magnetized quantum plasma

Abstract

This paper investigates the stopping power of a weakly coupled magnetized plasma. The effect of the Larmor rotation of the heavy charged test particle is carefully analyzed. The dielectric formalism is employed to obtain a general expression for the stopping power. A quantum mechanical form of the random-phase approximation dielectric function is used so that an arbitrary cutoff procedure is not required. Simple analytical expressions for the stopping power have been found for the cases of high and low projectile velocity of the test particle. The dependence of the stopping power on the angle of incidence is studied. A comparison with numerical solutions is given. It is found that in general a magnetic field reduces the stopping power of the plasma at high velocities, while it increases the stopping power at low velocities.

Evolution of induced axial magnetization in a two-component magnetized plasma

“…Similar results have also been obtained in sunspots, where H 0 = 3000G, mass density ρ = 10 −5 g/cm 3 and Alfven speed c A = 2.7 × 10 5 cm/sec. In that case for a = 10 −2 esu, H in = 420G and ω/k is very large but finite.…”

“…The dispersion of low amplitude waves or the interaction of low intensity particle beams with plasmas may be studied by employing the dielectric function. Recently, the stopping power of an uncorrelated plasma has been investigated [3]. There have been two basic lines beyond the traditional investigations of electromagnetic modes propagation.…”

Stopping of Heavy Ions in Magnetized Strongly Coupled Plasmas: High‐Velocity Limit

“…However, in the presence of a magnetic field, the cutoff r min must be deduced by a comparison of the linear response and the full nonperturbative binary collision treatments. It should be noted that quantum mechanical treatment with and without magnetic field does not require any cutoff due to the wave nature of the electrons [9,22]. Let us now specify the dielectric function.…”

Influences of finite Larmor radius on wake effects and stopping power for proton moving in magnetized two-component plasma

“…[18], the energy loss rate for arbitrary test particle velocities in the limit of sufficiently strong magnetic field was calculated, which was much higher than that without magnetic field. Besides, it is also found that the magnetic field reduces the stopping power at high particle velocities, while enhances the stopping power at low particle velocities [19].…”

“…Since magnetic fields are experimentally available in the MCF and electron cooling processes, many theoretical calculations of the stopping power in a magnetized plasma have been presented [12,[15][16][17][18][19][20][21][22][23][24]. When a charged particle penetrates into a magnetic field, it suffers the Lorentz force only in the direction across the magnetic field.…”