多电荷弹丸通过绝缘毛细管导引的数值模拟
Simulation of guiding of multiply charged projectiles through insulating capillaries
摘要：
最近的实验已经证明，高电荷离子可以被引导通过绝缘纳米胶囊沿着毛细管轴的方向，为一个令人惊讶的宽范围的注射角度。甚至更令人惊讶的是，透射粒子主要保持在其初始电荷状态，从而打开了无电馈电的新型离子光学元件的构造途径。我们提出了一个理论治疗这种自组织的指导过程。我们发展了一个经典的轨道输运理论，涉及微观充电与宏观材料性能。研究了靶的透射系数、透射粒子的角展和放电特性。与实验部分协议。
英文摘要：
Recent experiments have demonstrated that highly charged ions can be guided through insulating nanocapillaries along the direction of the capillary axis for a surprisingly wide range of injection angles. Even more surprisingly, the transmitted particles remain predominantly in their initial charge state, thus opening the pathway to the construction of novel ion-optical elements without electric feedthroughs. We present a theoretical treatment of this self-organized guiding process. We develop a classical trajectory transport theory that relates the microscopic charge-up with macroscopic material properties. Transmission coefficients, angular spread of transmitted particles, and discharge characteristics of the target are investigated. Partial agreement with experiment is found.
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