Energy loss of charged particles moving in cylindrical tubules
作者： You-Nian Wang , Z. L. Mišković
DOI: 10.1103/PHYSREVA.66.042904
关键词:
摘要: The interactions of charged particles with cylindrical tubules are studied within the framework dielectric theory. Elementary excitations on a tubule modeled by an infinitesimally thin layer free-electron gas, uniformly distributed over surface tubule. function such system, obtained from random-phase approximation, exhibits dimensional crossover two-dimensional to one-dimensional electron when radius decreases. Energy loss particle, moving paraxially in tubule, can be divided into single-particle excitation part and resonant part. It is shown that modes which dominate energy high-velocity regime, quite different those cavity solid, described bulk surrounding three-dimensional gas.
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