CHARGE STATES OF SPUTTERED ATOMS/IONS

The charge states of sputtered cesium and oxygen ions/atoms from metal surfaces have been discussed with the time-dependent Newns-Anderson model. The final charge state distribution has been calculated as a function of work function of the surfaces. The calculated results fit the experimental data well. Besides, the dependence of the final charge states of the sputtered oxygen particles on the surface temperature is also predicted.     

铯离子/原子与金属表面电荷交换的计算

用Ｎｅｗｎｓ－Ａｎｄｅｒｓｏｎ量子模型，计算了低能铯离子与涂有铯原子的钨表面（Ｃｓ／ｗ（１１０））碰撞时，由于电荷交换引起的末态电荷态的分布与Ｃｓ／Ｗ（１１０）表面功函数及表面温度的关系，计算结果与相应的实验符合得较好。同时，也给出了铯离子和原子与Ｃｓ／Ｗ（１１０）表面相互作用过程中粒子电荷态变化的全过程，并对两者作了比较． 关键词：     

CHARGE STATES OF SPUTTERED ATOMS/IONS

The charge states of sputtered cesium and oxygen ions/atoms from metal surfaces have been discussed with the time-dependent Newns-Anderson model. The final charge state distribution has been calculated as a function of work function of the surfaces. The calculated results fit the experimental data well. Besides, the dependence of the final charge states of the sputtered oxygen particles on the surface temperature is also predicted.