Abstract
Multiple scattering influences the particle motion and the radiation characteristics in a twofold way. On the one hand, due to multiple scattering, the channeled particles leave the channeling regime and form a background bremsstrahlung moving in random directions. On the other hand, multiple scattering disturbs the coherent particle oscillations in the channel and leads to smearing the emission spectra. For a theoretical description, the Monte Carlo method seems to be the most suitable since it allows the consideration of the influence of different factors on channeling characteristics. S. D. Bloom et al. [1] have carried out such calculations for positrons in Si(110) in the range from 30 MeV to 100 MeV for different thermal vibration amplitudes. The strong dependence of multiple scattering on thermal vibrations is clearly seen. However, the sharpness and heights of the theoretical peaks are not reached in the experiment. This is also shown in the publication by O. Pedersen et al. [2] and in a recent paper by J. Bak et al. [3].
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Wedell, R. (1987). Multiple Scattering Effects of Light Relativistic Particles under Channeling Conditions. In: Carrigan, R.A., Ellison, J.A. (eds) Relativistic Channeling. NATO ASI Series, vol 165. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-6394-2_6
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DOI: https://doi.org/10.1007/978-1-4757-6394-2_6
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