Surface channeling

Energy Transfer from Fast Atomic Projectiles to a Crystal Lattice under Channeling Conditions

“…1 [7]. Instead of transmission, projectiles can also be reflected from the topmost layer for scattering at glancing angles of incidence ["(semiplanar) surface channeling" [8][9][10] ] as also sketched in the figure.…”

Deflection of positively charged heavy particles by the crystal miscut surface

“…One should emphasize that the scheme considered for beam deflection differs from the beam reflection from a single-plane crystal surface [15]. Here beam deflection is a result of successive passages of particle from one terrace field to another.…”

“…1c) and it will be reflected from the surface. If h 0 > h pl , then the particle can penetrate into the crystal bulk [15].…”

“…The ordered crystal structure remains at the crystal surface layer [13,14]. Surface channeling, when the particle penetrates into the crystal through the lateral surface at the small glancing angle and successively is trapped into the channeling state, is also well-known phenomena [15]. It was shown the averaged planar potential approximation is applicable when the particle hits the lateral crystal surface at a small glancing angle to the crystallographic planes [16].…”

On the deflection of a positron beam by the miscut surface of an oriented crystal

“…It is known that the surface layer of the crystal holds an order structure [14,15]. Surface channeling was observed in [16], when the particle penetrates into the crystal through the lateral surface at small angle to it and is captured in the channeling regime in the surface layer. It was shown that the aver aged potential model is applicable to the case of the incidence of fast particles on the crystal lateral face at a small angle (see [17] and references therein).…”