| 六氟化硫和三氟溴甲烷对电离层电子捕获能力对比 |
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| 引用本文： | 白云,史红星,赵静,王庚,陈言坤.六氟化硫和三氟溴甲烷对电离层电子捕获能力对比[J].空间科学学报,2019,39(1):62-68. |
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| 作者姓名： | 白云 史红星 赵静 王庚 陈言坤 |
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| 作者单位： | 国民核化生防护国家重点实验室 北京102205;防化研究院 北京102205;防化研究院 北京102205 |
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| 基金项目： | 国家高技术研究发展计划项目资助（2012AA7122019） |
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| 摘 要： | 六氟化硫（SF6）和三氟溴甲烷（CF3Br）是目前发现的在电离层释放作用效果较好的两种物质.利用气相色谱elax-elax电子捕获检测器（GC-ECD）对SF6和CF3Br的电子捕获能力进行实验研究，并采用密度泛函理论（DFT）对两种物质进行理论计算，最后对实验结果和理论计算结果进行对比分析.GC-ECD实验结果表明，SF6和CF3Br在ECD检测器上均有较好的响应，且CF3Br在ECD检测器上的响应强于SF6.DFT理论计算结果表明，SF6和CF3Br都具有捕获电子的潜力.综合实验结果与理论计算结果可知，SF6和CF3Br都具有捕获电子的潜力，且均有较好的电子捕获效果，相对于SF6，CF3Br电子捕获效果更好.
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| 关 键 词： | 电子捕获能力 GC-ECD 密度泛函 六氟化硫 三氟溴甲烷 |
| 收稿时间： | 2017-11-28 |
Comparison between the Electron Capture Capacity of SF6 and CF3Br |
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| Institution: | 1 Protection of National State Key Laboratory of Nuclear Metaplasia, Beijing 102205;2 Institute of Chemical Defense, Beijing 102205 |
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| Abstract: | The sulfur hexafluoride (SF6) and trifluoromethane (CF3Br) are two kinds of ionospheric modification agents. The GC-ECD and DFT evaluation method for vacuum electron absorption are designed, and two methods are used to evaluate the SF6 and CF3Br. Finally, the results of two methods are compared and analyzed. The results of GC-ECD evaluation method show that SF6 and CF3Br have better response on ECD detector, and the response of CF3Br on ECD detector is stronger than that of SF6. The results of DFT evaluation method show that both SF6 and CF3Br have superior electron absorption capacity. Considering the results of the GC-ECD and DFT evaluation method, it can be seen that both SF6 and CF3Br have obvious electron absorption capacity and have superior electron absorption effect. The electron absorption effect of CF3Br is superior to that of SF6. |
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