中能氩离子束辐照麦胚自由基的ESR研究

李文建; 卫增泉; 颉红梅; 韩光武; 张金莲; 胡钺

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中能氩离子束辐照麦胚自由基的ESR研究

研究论文 | 更新时间：2023-04-23

- 中能氩离子束辐照麦胚自由基的ESR研究
- ESR STUDIES OF FREE RADICALS IN WHEAT EMBRYOS FOLLOWING ARGON ION BEAMS WITH MEDIUM ENERGY EXPOSURE
- 辐射研究与辐射工艺学报 1994年12卷第4期页码：228-231
- 作者机构：
  
  1.中国科学院近代物理研究所　兰州　730000
  2.甘肃省农科院粮作所　兰州　730070
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目
- DOI：
  中图分类号：
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李文建, 卫增泉, 颉红梅, 等. 中能氩离子束辐照麦胚自由基的ESR研究[J]. 辐射研究与辐射工艺学报, 1994,12(4):228-231.

Li Wenjian, Wei Zengquan, Xie Hongmei, et al. ESR STUDIES OF FREE RADICALS IN WHEAT EMBRYOS FOLLOWING ARGON ION BEAMS WITH MEDIUM ENERGY EXPOSURE[J]. Journal of Radiation Research and Radiation Processing, 1994,12(4):228-231.
李文建, 卫增泉, 颉红梅, 等. 中能氩离子束辐照麦胚自由基的ESR研究[J]. 辐射研究与辐射工艺学报, 1994,12(4):228-231. DOI：

Li Wenjian, Wei Zengquan, Xie Hongmei, et al. ESR STUDIES OF FREE RADICALS IN WHEAT EMBRYOS FOLLOWING ARGON ION BEAMS WITH MEDIUM ENERGY EXPOSURE[J]. Journal of Radiation Research and Radiation Processing, 1994,12(4):228-231. DOI：

摘要

用ESR波谱技术，研究了室温下中能氩离子（20.7 MeV/u）辐照小麦种子胚部产生的自由基，观察了自由基的稳定性。实验结果表明，种子中自由基浓度随种子含水量线性增加；自由基浓度随辐照剂量增加，然后趋于饱和；讨论了自由基与种子损伤的关系。根据实验数据和自由基扩散理论估算了自由基在麦胚中的扩散距离。

Abstract

Free radicals were studied at room temperature using ESR spectroscopic method after wheat embryos were irradiated with argon ion beams with medium energy (20.7 MeV/u). The stability of the radicals was observed. Experimental results show that the radical concentration in seeds linely increases with moisture content of seeds: the radical concentration increases with irradiation dose and gradually reaches a saturation state. The relatioship of the radicals and damage to seeds was discussed. According to experimental data and radical diffusion theory the diffusion distance of the radicals in wheat embryos was estimated.

关键词

中能氩离子小麦ESR波谱自由基辐照剂量扩散距离

Keywords

Argon ionIon beamsWheatESR spectroscopyFree radicalIrradiation doseDiffusion distance

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