用于高能粒子束沟道的最佳纳米管直径
Nanotube diameter optimal for channeling of high-energy particle beam
摘要：
用计算机模拟研究了粒子束在直的和弯曲的单壁纳米管中的传播。我们已经发现，纳米管应该足够窄，以便有效地操纵粒子束，优选直径在0.5- 2nm的量级。更宽的纳米管，例如10-50 nm，由于沟道效应对纳米管曲率的高敏感性，对于沟道效应的目的似乎是相当无用的。我们比较了弯曲纳米管和弯曲晶体作为光束控制技术的元件，发现窄纳米管具有与晶体相似的光束弯曲效率。
英文摘要：
Channeling of particle beam in straight and bent single-wall nanotubes has been studied in computer simulations. We have found that the nanotubes should be sufficiently narrow in order to steer efficiently the particle beams, with preferred diameter in the order of 0.5-2 nm. Wider nanotubes, e.g. 10-50 nm, appear rather useless for channeling purpose because of high sensitivity of channeling to nanotube curvature. We have compared bent nanotubes with bent crystals as elements of beam steering technique, and found that narrow nanotubes have an efficiency of beam bending similar to that of crystals.
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