Quantum calculations for the effects of dislocations on channeling and channeling radiation
| Autor: | Dimitris Emfietzoglou, Juby George, Salvador A. Cruz, Anand P. Pathak |
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| Rok vydání: | 2007 |
| Předmět: |
Physics
Nuclear and High Energy Physics Condensed matter physics Bent molecular geometry Schrödinger equation Transverse plane symbols.namesake Reflection (physics) symbols Physics::Accelerator Physics Boundary value problem Dislocation Atomic physics Wave function Instrumentation Magnetosphere particle motion |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 256:148-152 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2006.11.126 |
| Popis: | The channeling process in a crystal bent by dislocations is considered. The Schrodinger equation for the channeled particle motion is separated between longitudinal and transverse parts. The transverse potential and the frequency of channeling radiation in the perfect channel and the two regions of dislocation affected channels are calculated. The corresponding wave functions for the transverse and longitudinal motions are also calculated. In this work, we specifically investigate the effects of longitudinal motion of the particle on the dechanneling parameter and the frequency. The continuity of wave functions and their derivatives is used at the three boundaries and reflection and transmission coefficients are found using these boundary conditions. Finally, we consider the two cases of maximum and minimum dechanneling probabilities. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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