Structure has been observed in the energy-loss spectrum of 60-MeV ¹²⁷I ions and 3-MeV α particles channeled in gold single crystals. The explanation of this structure has been found to lie in the nature of transverse oscillations of the particles in the channels. The energy losses associated with given wavelengths and amplitudes allow a mapping of the stopping power in the channel and should permit the direct determination of inter-atomic potentials.
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Lutz et al. (1966) studied this question.