Multiple scattering of channeled ions in crystals

The Focker-Planck equation for scattering of channeled ions by electrons and thermal vibrations of crystalline lattice atoms has been obtained and solved. For calculations use is made of two models of the electron density distribution in a channel: the Thomas-Fermi model and the free-electron model....

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Veröffentlicht in:	Radiat. Eff. 13: No. 1-2, 9-22 (Mar 1972) 9-22 (Mar 1972), 1972-03, Vol.13 (1-2), p.9-22
Hauptverfasser:	Beloshitsky, V. V., Kumakhov, M. A., Muralev, V. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	CRYSTAL LATTICES CRYSTALS/ion dechanneling by scattering at electrons and thermal vibrations, (T) ELECTRONS ION BEAMS ION CHANNELING IONS IONS/channeling in crystals, multiple scattering by electrons and thermal vibrations in, (T) LATTICE VIBRATIONS MONOCRYSTALS MULTIPLE SCATTERING N74100 -Physics (Solid State)-Radiation Effects SILICON SILICON/ion dechanneling by scattering at electrons and thermal vibrations, (T) TUNGSTEN TUNGSTEN/ion dechanneling by scattering at electrons and thermal vibrations, (T)
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Beschreibung
Zusammenfassung:	The Focker-Planck equation for scattering of channeled ions by electrons and thermal vibrations of crystalline lattice atoms has been obtained and solved. For calculations use is made of two models of the electron density distribution in a channel: the Thomas-Fermi model and the free-electron model. Axial and planar channeling is considered. It is shown that scattering by electrons plays an important part in ion dechanneling. In particular, in axial channeling scattering by electrons has a dominant effect on dechanneling of fast light ions. A comparison is made between theory and experiment on dechanneling of fast ions in tungsten and silicon.
ISSN:	0033-7579
DOI:	10.1080/00337577208231156