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用ＥＳＲ波谱术研究了室温下中能氮离子辐照小麦种子产生的自由基，发现氮离子贯穿和注入小麦种子产生的自由基浓度随剂量的变化具有不同的特征。对氮离子贯穿小麦种子产生的自由基浓度随剂量率的变化规律也进行了研究。
ESR spectroscopy was used to study the free radicals produced by medium-energy nitrogen ions irradiating wheat seeds at room temperature. It was found that the concentration of free radicals produced by the penetration and injection of nitrogen ions into wheat seeds varied with dose. The variation of the concentration of free radicals produced by penetrating wheat seeds with the dose rate was also studied.