【摘要】 <正> 荷能离子轰击固体复合材料表面时某种成分的择优发射现象,是人们很感兴趣的研究课题。这是因为,择优发射机制至今尚不清楚。同时,很多现代表面分析设备,诸如俄歇电子更多还原

【Abstract】 Measurements of angular distribution of atoms sputtered from copper, gold element samples and Cu0.7Au0.3 alloy samples by 27 keV argon ions irradiation are reported. The following results are noteworthy: (1) All angular distributions were over cosine. The exponent, n, in fitting functions of the from connθ, was obtained, n = 1.56 and 1.61 for copper and gold samples, and n=1.78 for Cu0.7Au0.3 alloy samples respectively; (2) The angular distributions of the component atoms sputtered from Cu0.7Au0.3 alloy showed that the copper ejected was preferential.更多还原