论文部分内容阅读
绝缘材料毛细孔的离子导向效应研究在被动型离子光学元件开发方面有着重要的意义.进行了150keVO3+,0.32MeVO+,2MeVO2+等具有不同Ep/q值的离子与氧化铝毛细孔的相互作用研究.对于150keVO3+入射离子,离子沿毛细孔穿越的过程中存在着导向效应:随着毛细孔相对于入射离子束的偏转,入射离子依然能够显著地穿过毛细孔,而且保持电荷态不变;出射离子的角分布谱发生与毛细孔偏转相同的偏移;毛细孔不同偏转角度时的穿透率可以很好地被高斯函数拟合.对于0.32MeVO+,2MeVO2+离子入射氧化铝毛细孔,没有导向效应发生.导向效应能够发生的入射离子的Ep/q最大值小于320kV.
The ion-guiding effect of the capillary pores in insulating materials is of great significance in the development of passive ion optics.The interaction between ions and alumina pores with different Ep / q values of 150keVO3 +, 0.32MeVO +, 2MeVO2 + 150keVO3 + ions, there is a guiding effect in the process of the ions traversing the capillary: as the capillary is deflected with respect to the incident ion beam, the incident ions can still pass through the pores remarkably and keep the state of charge unchanged; The angular distribution spectrum has the same offset as the capillary deflection, and the permeability at different deflection angles of the capillary can be well fitted by a Gaussian function. For the 0.32MeVO +, no incident effect occurs when 2MeVO2 + ions are incident on the alumina pores. The maximum value of Ep / q for incident ions that can be introduced by the guiding effect is less than 320 kV.