Au离子注入花生种胚深度的研究  

A study on penetration depth of Au-implantation in peanut embryo

作　　者：王超[1] 陆挺[1] 汪新福[1] 周宏余[1] 朱光华[1] 

机构地区：[1]北京师范大学低能核物理所,北京100875

出　　处：《核技术》2002年第6期467-470,共4页Nuclear Techniques

基　　金：国家自然科学基金重大课题 (19890 30 0 );北京市科技院萌芽计划资助

摘　　要：使用金属蒸汽真空弧离子源 (MEVVA源 )离子注入机对花生种胚进行Au离子的注入 ,采用卢瑟福背散射 (RBS)和X射线能谱分析 (EDAX)法测量Au元素在花生种子中的深度分布 ,并观察注入前后的样品形貌。结果表明 ,由于样品表面粗糙 ,RBS不适于测量Au元素在花生种子中的浓度分布 ,而EDAX的测量则显示Au元素在花生种子中的最大穿透深度可达 15 μm。另外 ,本文还讨论了离子注入的诱变机理。An implanter with a metal vapor vacuum arc ion source (MEVVA) was employed to implant Au + ions into peanut embryo. The methods of Rutherford Backscattering Spectroscopy and X-ray Energy Dispersive Analysis were adopted to measure depth distribution of Au in peanut embryo. The results show that the method of RBS is not capable for measuring the depth distribution because of uneven sample surface; on the contrary, the method of EDAX gives a penetration depth of 15μm. By comparing to the unimplanted sample, obvious changes in morphologies were observed in implanted peanut embryo. The mechanism of mutagenic effects induced by ion implantation was briefly discussed.

关 键 词：离子注入 深度分析 花生种胚 形貌 

分 类 号：TL99[核科学技术—核技术及应用] Q71[生物学—分子生物学]