Damage effects of keV N~+ ions on amino acid molecules

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Damage effects of keV N~+ ions on amino acid molecules

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- Damage effects of keV N~+ ions on amino acid molecules
- NUCLEAR TECHNIQUES Issue 4, (1999)
- 作者机构：
  
  1. 中国科学院空间中心,北京
  2. ,230031
  3. 中国科学院等离子体物理研究所,合肥
- 作者简介：
- 基金信息：
  
  国家自然科学基金
- DOI：
  CLC： Q68
- Published：01 April 1999
- 稿件说明：
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[1]韩建伟,余增亮.keV量级的N~+注入引起的氨基酸分子损伤[J].核技术,1999(04):200-204.

Damage effects of keV N~+ ions on amino acid molecules[J]. Nuclear techniques, 1999, (4).
[1]韩建伟,余增亮.keV量级的N~+注入引起的氨基酸分子损伤[J].核技术,1999(04):200-204. DOI：

Damage effects of keV N~+ ions on amino acid molecules[J]. Nuclear techniques, 1999, (4). DOI：

摘要

利用电子顺磁共振和红外光谱研究了keV级N+注入到几种固态氨基酸样品中引起的分子结构损伤。结果表明，这一注入导致了分子的严重损伤：分子结构解体，红外吸收普遍降低；产生了大量的碎片，其中自由基碎片的类型和数量随注入离子的剂量发生显著变化；损伤碎片重组，形成了新的化学组合，表现出新的红外吸收峰。

Abstract

The keV N+ ions were implanted into several kinds of amino acids in solid state. The EPR and infrared (IR) spectroscopy were applied to study the induced damage. It was shown that severe implantation damages arose

the molecule decomposed

the IR absorption became weak and a great number of fragments were formed. And the radical fragments’ type and quantity sensitively varied with fluence of the implanted ions. Some of the fragments were even recomposed to form new chemical compounds

among which amides and new amino acids were the most probable forms.

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