摘要
用 1 1 0keVFe离子注入L(+) 半胱氨酸薄膜样品 ,然后通过傅里叶变换红外光谱、紫外 可见光谱和核磁共振氢谱分析表明 ,L(+) 半胱氨酸在接受Fe离子束辐照后受到了严重损伤 ,在样品中产生了新的分子基团 .ESR波谱分析表明在辐照产物中存在一种长寿命自由基 .
Fe + ions with the energy of 110 keV were implanted into films of L(+) cysteine. FTIR, UV VIS spectrometry and 1H NMR analysis of the irradiated samples prove that some of the original bio molecules were seriously damaged and significant modifications were induced. ESR analysis shows that a kind of long life radical was formed in the irradiated samples. The results of ESI FTMS analysis further supports the molecular modification induced by low energy ion beam irradiation. The radiation effects are closely connected with the energy deposition in solid L(+) cysteine samples.
出处
《高能物理与核物理》
CSCD
北大核心
2003年第5期460-464,共5页
High Energy Physics and Nuclear Physics
基金
中国科学院九五重点项目基金 (KJ95 2 S1 42 4)
中国科学院知识创新基金 (CX0 10 0 0 7)资助~~
