Babakhanyan, E. A. (2011) The depth evolution of density distribution structure for planar channeled particles in quantum approach. Il nuovo cimento C, 34 (4). pp. 119-124. ISSN 1826-9885
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Abstract
Within the framework of quantum-mechanical theory of planar channeling, the redistribution of electrons/positrons density in dependence of depth penetration into the crystal has been considered. The coherent nature of diffraction in a regular medium as well as inelastic processes accompanying the motion of a fast particle in crystals were revealed using the density matrix formalism based of quantum theory of channeling. A special role of the above-barrier states at channeling of negatively charged particles for the abnormally deep crystal penetration of electrons, previously observed at the Tomsk experiment, is shown. It has been demonstrated that realizing the conditions, under which the coherent phenomena are not damped, i.e. small thickness of a crystal, and having measured the yield of inelastic processes on the crystal lattice nuclei or interstitial impurity atoms, it is possible to find experimentally the periods of appropriate oscillations that will give the information about the energy band structure of particles in crystals.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Electron and positron radiation effects ; Radiation effects on specific materials |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 07 Apr 2020 15:59 |
| Last Modified: | 07 Apr 2020 15:59 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17323 |
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