Results 141 to 150 of about 619,631 (183)

DIFFUSION OF ELECTRONS BY MULTICHARGED IONS

Mathematical Models and Methods in Applied Sciences, 2000
Here we consider a magnetized plasma composed of electrons of low mean density and of one species of multicharged ions. Starting with the Vlasov–Fokker–Planck equations for both particles, we derive a diffusion model for the electrons, with explicit transport coefficients which are related to the ions.
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Electron spectroscopic studies of the neutralization of slow multicharged ions during interactions with a metal surface

AIP Conference Proceedings, 1993
Recent experimental results of electron spectroscopic studies of the neutralization and relaxation of slow multicharged ions interacting with metal surfaces are summarized.
Hughes, I. G., Zeijlmans van Emmichoven, P. A., Folkerts, L., Zehner, D. M., Havener, C. C., Meyer, F. W., Overbury, S. H.   +6 more
exaly   +1 more source

A high intensity Nielson ion source for multicharged ions

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1989
Abstract A hot cathode Penning ion source, based on a Nielson source in use on the Surrey 500 keV implanter, has been developed. The improvements are in the structure of the discharge chamber and the design of the magnetic fields produced by the coil and filament currents.
Ma Mingxiu, J.E. Mynard, K.G. Stephens
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Short pulse ECR ion sources of multicharged ions

2011 Abstracts IEEE International Conference on Plasma Science, 2011
Present work is devoted to demonstration of possibility of short pulsed (< 100 µs) multicharged ion beams formation by ECR ion source sustained by millimetre waves. Such investigations were stimulated by “Beta Beam” project1.
I.V. Izotov, S.V. Razin, A.V. Sidorov, V.A. Skalyga, V.G. Zorin   +4 more
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Theory of the stopping power of fast multicharged ions

Physical Review A, 1991
The processes of Coulomb excitation and ionization of atoms by a fast charged particle moving along a classical trajectory are studied. The target electrons are described by the Dirac equation, while the field of the incident particle is described by the Lienard-Wiechert potential.
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Interaction of slow multicharged ions with surfaces

Radiation Physics and Chemistry, 2007
Abstract In recent years the interaction of slow multiply charged ions with solid surfaces has gained renewed interest. Basic understanding of charge transfer processes involved in the neutralization sequence has emerged in the 1990s. In this manuscript we present a short overview over refined experimental and theoretical methods which have been ...
C. Lemell, M. Alducin, J. Burgdörfer, J.I. Juaristi, K. Schiessl, B. Solleder, K. Tökesi   +6 more
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Spectra of Multicharged Ions

1992
The spectra of multicharged ions are of special interest to many modern fields of research, such as X-ray space astronomy and astrophysics, controlled thermonuclear fusion, extreme ultraviolet and soft X-ray lasers. Different methods of creating high-temperature laboratory plasmas, low-inductance sparks and other discharges, tokomak and laser-produced ...
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Spectroscopy of Multicharged Ions in Laboratory Plasma

1979
Spectra of multicharged ions are now widely investigated both in laboratory and astrojihysical plasmas. The typical temperature values of such plasmas are from about 200 eV up to 2 keV and even higher (i.e. (2+20) 106K). The sources of laboratory plasma which were used in spectroscopy are laser produced plasmas, vacuum sparks, theta-pinch devices ...
L. A. Vainstein, V. A. Boiko, E. Ya. Kononov   +2 more
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Dynamics of fragmentation of a multicharge fullerene ion

Technical Physics Letters, 2007
We have studied the process of fragmentation of a molecular ion of C60 fullerene, which takes place as a result of the loss of five electrons in collision with a 64-keV Ar6+ ion. The spectrum of kinetic energies of the fragment ions with a given mass, as well as the number of such ions, were determined from the shapes of lines in the mass spectrum ...
V. V. Afrosimov, L. A. Baranova, A. A. Basalaev, M. N. Panov   +3 more
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Improvement of an ECR multicharged ion source

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1991
Abstract Experimental results are shown for the yield of high charge state ions depending on the field configuration and the type of microwave launcher. The presence of an octupole improves the yield by a factor of 8. A tandem mirror configuration improves the yield by a factor of 7.
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