Transmission of Hundred-keV Protons through Insulating Nanocapillaries: Charge-patch-assisted Specular Reflections.
Transmission of Hundred-keV Protons through Insulating Nanocapillaries: Charge-patch-assisted Specular Reflections.
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DOI：
10.1038/srep15169
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发表时间：
2015-10-15
影响因子：
4.6
通讯作者：
Chen XM
中科院分区：
文献类型：
--
作者：
Wang GY;Shao JX;Song Q;Mo D;Yang AX;Ma X;Zhou W;Cui Y;Li Y;Liu ZL;Chen XM
在这项工作中，我们测量了10-100 keV的质子通过聚碳酸酯（PC）膜中的纳米胶囊传输的传输特性的时间演化。在达到平衡后，具有100 keV的入射能量的透射粒子位于沿入射束的方向沿着而不是沿沿着毛细管轴的周围，这表明100 keV离子的传输机制与keV能量离子的传输机制不同。模拟结果表明，表面电荷斑辅助的集体散射是百keV离子在纳米电容器中的主要输运机制。这种情况下，填补了差距在以前的理解离子传输的纳米电容器从keV到MeV的能量。
In this work, we measured the time evolution of the transmission features of 10–100 keV protons transmitted through nanocapillaries in a polycarbonate (PC) membrane. After reaching equilibrium, transmitted particles with an incident energy of 100 keV were located around the direction along the incident beam but not along the capillary axis, indicating that the transport mechanism of the 100 keV ion was distinct from that of keV-energy ions. The simulation results indicated that charge-patch-assisted collective scatterings on the surface are the main transport mechanism for the hundred-keV ions in nanocapillaries. This scenario fills in the gap in the previous understanding of ion transmission in nanocapillaries from keV to MeV energies.