• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The European physical journal, D. Atomic, molecular, and optical physics >Radiolysis of pyridine in solid water
【24h】

Radiolysis of pyridine in solid water

机译：固体水中吡啶的辐射分解

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We irradiated the complex organic molecule pyridine and mixtures of pyridine and water in the solid phase (thin icy films) at 12 K at different beam lines of the GANIL facility (ARIBE: 90 keV O6+, SME: 650 MeV Zn26+). The destruction of the initial molecule and the appearance of radiolytic products were followed by in-situ infrared absorption spectroscopy as a function of the projectile fluence with the CASIMIR experimental set-up of CIMAP. We measured the destruction cross section as a function of pyridine concentration. A clear dependence on the percentage of pyridine in H2O was found: the destruction cross sections are significantly higher for small concentration, i.e. pure pyridine is more radioresistant than pyridine diluted in water ice at 12 K. Thus, the presence of water environment significantly modifies the radiation resistance of the initial complex organic molecules: it enhances radiosensitivity and destruction of pyridine, with implications for radiobiology and astrochemistry.Graphical abstract
机译：我们在GANIL设施（ARIBE:90 keV O6+，SME:650 MeV Zn26+）的不同光束线下，以12 K的温度辐照了固相中的复杂有机分子吡啶以及吡啶和水的混合物（薄冰膜）。利用CIMAP的CASIMIR实验装置，对初始分子的破坏和放射性产物的出现进行了现场红外吸收光谱分析，作为弹丸注量的函数。我们测量了破坏截面作为吡啶浓度的函数。发现吡啶在H2O中的百分比明显相关：对于小浓度，破坏截面显著更高，即纯吡啶比在12K水冰中稀释的吡啶更耐辐射。因此，水环境的存在显著地改变了最初复杂有机分子的抗辐射性：它增强了吡啶的辐射敏感性和破坏性，这对辐射生物学和天体化学具有重要意义。图形摘要

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号