Mean volume reflection angle
Open Access
- 13 March 2020
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Accelerators and Beams
- Vol. 23 (3), 031303
- https://doi.org/10.1103/PhysRevAccelBeams.23.031303
Abstract
The mean volume reflection angle of a high-energy charged particle passing through a bent crystal is expressed as an integral involving the effective interplanar potential over a single crystal period. Implications for positively and negatively charged particles, and silicon crystal orientations (110) and (111) are discussed. A generic next-to-leading-order expansion in the ratio E/R of the particle energy E to the crystal bending radius R is given. For positively charged particles, the dependence of the mean volume reflection angle on E/R proves to be approximately linear, whereas for negatively charged particles the linear behavior is modified by an E/R-dependent logarithmic factor. Up-to-date experimental data are confronted with predictions based on commonly used atomic potentials.Funding Information
- National Academy of Sciences of Ukraine (0118U100327, 0118U006496)
- Ministry of Education and Science of Ukraine (0118U002031)
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