J.S. Geiger

TL;DR: In this article, the X-ray anisotropic alignment was observed in both the separate ionization probabilities and the X ray anisotropy in the channel, where the various possible m states being non-degenerate in a channel are separable.

TL;DR: In this paper, the average energy loss and the straggling in energy loss for channeled and random penetration were discussed, and the observed dependence of the resonance strength on transverse energy was consistent with the calculated variation of the density of valence electrons seen by the ions.

TL;DR: In this article, the Barkas correction is viewed as an effect of dynamic screening of the ion potential in the initial phase of a collision with an electron, which reduces the relative velocity and therefore enhances the cross section.

TL;DR: The results of the charge-state measurements confirm that the probability of resonance capture is proportional to the valence electron density sampled by the ion, and the energy-loss distributions of channeled ions are in good agreement with theoretical estimates.

TL;DR: In this article, the resonance of 28Si13+ ions channeled in a thin Si crystal has been observed for Δn = 1, 2 and 3 transitions (K-shell to L-, M- and N-shells, respectively).