Peak profiles of the Okorokov effects for heavy ions in a crystal

Abstract

Detailed peak profiles of resonant excitation probabilities of a heavy ion along the crystal axis are calculated taking into account energy-level shifts, splitting of electron states in the heavy ion, and dwell-time differences for different channeling paths. The temperature effect is also studied by calculation of the Debye-Waller factor. The shape of peak profiles calculated for ${\mathrm{N}}^{6+}$\ensuremath{\rightarrow}Au $〈111〉$ agrees well with the experimental results obtained by Moak et al. However, quantitatively, few differences are found for the higher Miller indices.