150 keV O<sup>3+</sup>离子与氧化铝毛细孔的相互作用

150 keV O³⁺离子与氧化铝毛细孔的相互作用

摘要: 绝缘材料毛细孔离子导向效应研究在开发“被动型”离子光学元件方面有着积极的意义。本文进行了150 keV O³⁺离子束与氧化铝毛细孔的相互作用研究，发现在离子沿毛细孔穿越的过程中存在着导向效应。随着毛细孔的不断偏转，入射离子依然能显著地穿过毛细孔；出射离子的角分布谱随毛细孔偏转而偏移相同的角度；毛细孔偏转不同角度时的离子穿透率可很好地被高斯函数拟合。

Abstract: The study of insulating capillaries guiding ions is of aspiring significance in developing passive-type ionic optics. Interaction of 150 keV O³⁺ ions with alumina capillaries was studied and it is found that guiding effect occurs during the passage of 150 keV O³⁺ ions through alumina capillaries. The projectile ions could still pass through the capillaries significantly, while the capillaries are continuously relative to the projectile beam. Angular distribution spectrum of the emerging ions moves the same angle as the capillaries do. Penetrating rate of the projectile ions for different capillary tilt angles can be fitted well with Gaussion function.