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低能离子注入小麦种子胚内的射程分布

Range Distribution of Low Energy Ions Implanted into Embryo of Wheat Seed

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【作者】 卫增泉袁世斌颉红梅赵力民毛淑红

【Author】 WEI Zengquan, YUAN Shibin, XIE Hongmei, ZHAO Limin, MAO Shuhong(Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China)

【机构】 中国科学院近代物理研究所中国科学院近代物理研究所 甘肃兰州730000甘肃兰州730000甘肃兰州730000

【摘要】 采用110keV56Fe1+离子束垂直注入小麦种胚后,将小麦沿腹面的纵沟掰开,形成剖面,将剖面水平朝上粘贴在金属铜托上,用扫描电镜在剖面上从胚表面向纵深进行点分析,测定不同深度上由Fe元素激发出的特征X射线强度,由此得到了该种离子注入小麦胚内的最大射程约5μm,最可几射程为0.935μm.并对这种低能离子注入作物种子能诱发突变的机理进行了详细讨论.

【Abstract】 After embryo of wheat seed was right implanted by 110 keV 56Fe1+ ions, the seed was broken into two parts by hand along its abdomen trench to form two crosssections. A halfseed was pasted on a metal holder in keeping the crosssection upwards horizontal. Spot analyses were carried out from embryo surface towards depth on the crosssection under SEM and the intensity of characteristic X rays induced by electrons in Fe elements of the embryo was measured. From this, the maximum range of the ions in the embryo of wheat seed was obtained about 5 μm and the range with maximum probability was 0.935 μm. Mechanism of mutation induced by the low energy ions implanted into the crop seed is in greater detail discussed.

【基金】 国家自然科学基金资助项目(19135022;9975060);中国科学院重点基金资助项目(KJ952 S1 424);甘肃省自然科学重点基金资助项目(C34)~~
  • 【文献出处】 原子核物理评论 ,Nuclear Physics Review , 编辑部邮箱 ,2003年03期
  • 【分类号】S512.1
  • 【被引频次】11
  • 【下载频次】68
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