摘要
六氟化硫(SF6)和三氟溴甲烷(CF_3Br)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-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,SF_6和CF_3Br在ECD检测器上均有较好的响应,且CF_3Br在ECD检测器上的响应强于SF6. DFT理论计算结果表明,SF6和CF_3Br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CF_3Br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SF_6, CF_3Br电子捕获效果更好.
The sulfur hexafluoride(SF_6) and trifluoromethane(CF_3Br) 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 CF_3Br. Finally, the results of two methods are compared and analyzed. The results of GC-ECD evaluation method show that SF6 and CF_3Br have better response on ECD detector, and the response of CF_3Br on ECD detector is stronger than that of SF6. The results of DFT evaluation method show that both SF6 and CF_3Br have superior electron absorption capacity. Considering the results of the GC-ECD and DFT evaluation method, it can be seen that both SF6 and CF_3Br have obvious electron absorption capacity and have superior electron absorption effect. The electron absorption effect of CF_3Br is superior to that of SF6.
引文
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