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Gompertz type dechanneling functions for protons in 〈1 0 0〉, 〈1 1 0〉 and 〈1 1 1〉 Si crystal channels

✍ Scribed by S. Petrović; M. Erić; M. Kokkoris; N. Nešković

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 164 KB
Volume: 256
Category: Article
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2006.11.110

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✦ Synopsis

In this work the energy dependences of the Gompertz type sigmoidal dechanneling function parameters for protons in h1 0 0i, h1 1 0i and h1 1 1i Si crystal channels is investigated theoretically. The proton energy range considered is between 1 and 10 MeV. The original dechanneling functions are generated using a realistic Monte Carlo computer simulation code. We show that the Gompertz type dechanneling function, having two parameters, l c and k, representing the dechanneling range and rate, respectively, approximate accurately the original dechanneling function. It is also shown that the energy dependences of parameters l c and k can be approximated by a linear function and a sum of two exponential functions, respectively. The results obtained can be used for accurate reproduction of experimental proton channeling spectra recorded in the backscattering geometry.

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Gompertz type dechanneling functions for protons in 〈1&#xa0;0&#xa0;0〉, 〈1&#xa0;1&#xa0;0〉 and 〈1&#xa0;1&#xa0;1〉 Si crystal channels

✦ Synopsis

Gompertz type dechanneling functions for protons in 〈1 0 0〉, 〈1 1 0〉 and 〈1 1 1〉 Si crystal channels