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首页> 外文期刊>Journal of surface investigation: x-ray, synchrotron and neutron techniques >Study of the Angular and Energy Distributions of Na~+ and K~+ Ions which have Passed through Thin Copper Films
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Study of the Angular and Energy Distributions of Na~+ and K~+ Ions which have Passed through Thin Copper Films

机译：穿过铜薄膜的Na〜+和K〜+离子的角和能量分布的研究

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摘要

The angular and energy distributions of alkaline Na~+ and K~+ ions which have passed through thin Cu films in different crystal states are studied. The ion energy E_0 is varied from 10 to 40 keV, and the incidence angle φ ranges from 0° to 60°. The angular aperture of the detector is ~0.5°, which allows the form of the angular distribution of ions which have passed through the solid thin films as a function of the energy, the angle of primary-ion beam incidence, and the layer thickness to be studied in detail. It is shown that, in the range E_0 = 10-40 keV, the energy loss ΔE of those ions that have passed increases linearly as the energy of incident ions increases. The energy loss increases with increasing ion mass in the case of singly charged ions. The surface amorphization of singleand polycrystalline films leads to an increase (by 150-200 eV) in the energy loss caused by the diffuse propagation of ions and to loss-peak broadening. It is probable that surface amorphization is accompanied by an increase in the number of atoms experiencing multiple collisions with atoms of the film, which leads to an increase in the average energy loss by ions that have passed through films.
机译：研究了穿过不同晶态的Cu薄膜的碱性Na〜+和K〜+离子的角分布和能量分布。离子能量E_0在10至40keV之间变化，并且入射角φ在0°至60°的范围内。检测器的角孔径为〜0.5°，这允许通过固体薄膜的离子的角度分布形式与能量，一次离子束入射角和层厚度成函数关系。进行详细研究。结果表明，在E_0 = 10-40 keV的范围内，通过的那些离子的能量损失ΔE随着入射离子能量的增加而线性增加。在单电荷离子的情况下，能量损失随着离子质量的增加而增加。单晶和多晶膜的表面非晶化导致离子扩散传播引起的能量损失增加（增加150-200 eV），并导致峰峰值增大。表面非晶化可能伴随着与薄膜原子多次碰撞的原子数量增加，这导致穿过薄膜的离子的平均能量损失增加。

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