Above-surface potential sputtering of protons by highly charged ions.
Above-surface potential sputtering of protons by highly charged ions.
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高电荷离子对质子的表面上方电势溅射。
DOI：
10.1103/physreva.54.4140
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Yamazaki
中科院分区：
文献类型：
--
作者：
Burgdörfer;Yamazaki
基于经典的过势垒模型，本文描述了高电荷态慢离子在绝缘体表面引起的势能诱导质子溅射。质子发射的结果从局部库仑爆炸后，打破共价CH键的碳氢化合物在表面。该模型描述了非常陡峭的依赖于弹丸电荷（Q_4-Q_6）的中等高电荷状态（Q_10），与实验一致。此外，它还预测了更高电荷状态下Q依赖性的饱和。
We present a description for potential-energy-induced sputtering of protons by slow, highly charged ions in front of insulator surfaces, based on the classical over-barrier model. Proton emission results from the localized Coulomb explosion after breaking the covalent CH bond in hydrocarbons at the surface. The model describes the very steep dependence on the projectile charge (∼ Q 4–Q 6) for moderately high charge states (Q≲ 10), in agreement with the experiment. It furthermore predicts the saturation of the Q dependence for even higher charge states.© 1996 The American Physical Society.