Passage of Charged Particles through Plasma

Neufeld, Jacob; Ritchie, R.H.

doi:10.1103/physrev.98.1632

Cited by 314 publications

(126 citation statements)

References 21 publications

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“…From experimental viewpoints, a lot of measurements have provided valuable data, some of which were recently compiled by Andersen and Ziegler (1977) and Janni (1982). On the other hand, theoretical models and methods have been proposed (Bethe 1930, Bloch 1933, Ritchie 1959, Neufeld and Ritchie 1955, Lindhard and Winther 1964, Sigmund 1982, Echenique er al 1986, Gertner e1 a/ 1978, Kaneko 1986a, 1989a in order to interpret those data. Recently, theoretical data tables for the stopping power for a proton were also.…”

Section: Introductionmentioning

confidence: 99%

Energy loss of swift metastable projectiles with two bound electrons

Kaneko

Tsuchida

1994

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. An analytical formula for the electronic stopping power S was derived for swift(v34uo) frozen-charge-state projectiles (atomic number Zl) with two electrons in metastable I s 2 singlet and triplet states, using a first-order perturbation method. Thespatial electron distribution around a projectile was determined by the variational method. In order to demonstrate the magnitude of S. we also calculate the effective stopping-power charge. Compared with the ground state (Is'), S i n the ls2s configuration is found to be enhanced especially at the lowest velocity (u=Z,v,) investigated. In addition, it is found that (i) there is no appreciable difference between ls2s singlet and triplet state, and (ii) S for the ls2s singlet can be scaled in the form Sx Z;'.'O.

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Section: Introductionmentioning

confidence: 99%

Energy loss of swift metastable projectiles with two bound electrons

Kaneko

Tsuchida

1994

J. Phys. B: At. Mol. Opt. Phys.

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“…Energy loss of fast charged particles in a plasma has been a topic of great interest since the 1950s [1][2][3][4][5][6][7][8] due to its considerable importance for the study of basic interactions of the charged particles in real media; moreover, recently it has also become a great concern in connection with heavy-ion driven inertial fusion research [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Stopping of charged particles in a magnetized classical plasma

Nersisyan

1998

Phys. Rev. E

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The analytical and numerical investigations of the energy loss rate of the test particle in a magnetized electron plasma are developed on the basis of the Vlasov-Poisson equations, and the main results are presented. The Larmor rotation of a test particle in a magnetic field is taken into account. The analysis is based on the assumption that the energy variation of the test particle is much less than its kinetic energy. The obtained general expression for stopping power is analyzed for three cases: (i) the particle moves through a collisionless plasma in a strong homogeneous magnetic field; (ii) the fast particle moves through a magnetized collisionless plasma along the magnetic field; and (iii) the particle moves through a magnetized collisional plasma across a magnetic field. Calculations are carried out for the arbitrary test particle velocities in the first case, and for fast particles in the second and third cases. It is shown that the rate at which a fast test particle loses energy while moving across a magnetic field may be much higher than the loss in the case of motion through plasma without magnetic field.

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“…The method of calculating the potential around a test charge in plasma was explicated sixty years ago (Neufeld and Ritchie, 1955). Thirty years later it was revived (Nambu and Akama, 1985) to include the effect of plasma waves and was used in this form to suggest the coagulation of particles in the presence of dust in plasmas in order to explain the formation of dust structure, which for some while became an industry (cf.…”

Section: Generation Of Wave-mediated Attractive Potentialsmentioning

confidence: 99%

Plasma wave mediated attractive potentials: a prerequisite for electron compound formation

Treumann

Baumjohann

2014

Ann. Geophys.

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Abstract. Coagulation of electrons to form macro-electrons or compounds in high temperature plasma is not generally expected to occur. Here we investigate, based on earlier work, the possibility for such electron compound formation (non-quantum "pairing") mediated in the presence of various kinds of plasma waves via the generation of attractive electrostatic potentials, the necessary condition for coagulation. We confirm the possibility of production of attractive potential forces in ion-and electron-acoustic waves, pointing out the importance of the former and expected consequences. While electron-acoustic waves presumably do not play any role, ion-acoustic waves may potentially contribute to formation of heavy electron compounds. Lower-hybrid waves also mediate compound formation but under different conditions. Buneman modes which evolve from strong currents may also potentially cause non-quantum "pairing" among cavity-/hole-trapped electrons constituting a heavy electron component that populates electron holes. The number densities are, however, expected to be very small and thus not viable for justification of macro-particles. All these processes are found to potentially generate cold compound populations. If such electron compounds are produced by the attractive forces, the forces provide a mechanism of cooling a small group of resonant electrons, loosely spoken, corresponding to classical condensation.

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Passage of Charged Particles through Plasma

Cited by 314 publications

References 21 publications

Energy loss of swift metastable projectiles with two bound electrons

Energy loss of swift metastable projectiles with two bound electrons

Stopping of charged particles in a magnetized classical plasma

Plasma wave mediated attractive potentials: a prerequisite for electron compound formation

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