Dielectric response function and stopping power of dense magnetized plasma

Abstract

Using a kinetic-theoretic approach to Fokker-Planck equilibrium of thermonuclear ␣ particles in dense and magnetized plasmas, the corresponding longitudinal dielectric function is investigated at length. It is used to evaluate the energy loss of the ␣ s Ј through the excitation of collective plasma modes. Specific attention was paid to the case of extreme magnetization, as well as to the parallel stopping of ␣ particles in dense and hot plasmas of magnetized target fusion ͑MTF͒ interest. Maximum stopping is shown to be strongly dependent on magnetic field intensity.

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

“…For k ⊥ a 1, the above equations will degenerate into the usual form which neglected the effect of magnetic field on the test particle trajectory [21]. …”

“…However, to our best knowledge, only a few theoretical studies on energy losses consider the Larmor rotation of the projectile, and pay special attention to the case of extreme magnetization, as well as to the incidence velocity paralleled the magnetic field [18,21]. In Ref.…”

“…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.…”

Low ion velocity slowing down in a strongly magnetized plasma target

“…Thus, we reached analytic LIVSD transverse and parallel expressions advocating contrasting temperature behavior. These quantities are of obvious significance in asserting the confinement capabilities of a very large scope of dense and strongly magnetized plasmas ranging from ultracold ones [1] to those featuring the highest B values one can produce in the laboratory or observe in astrophysics [2][3][4][5][6][7].…”

“…This range includes ultracold plasmas (UCP) [1], cold electron setups used for ion beam cooling [2], as well as many very dense systems involved in magnetized target fusions (MTF) [3], or inertial confinement fusion (ICF). This latter thermonuclear scheme presently advocates a highly regarded fast ignition scenario (FIS) [4], based on femto laser produced proton or heavier ion beams impinging a precompressed capsule containing a thermonuclear fuel [5] in it.…”