Several CO 2 electron impact dissociation cross sections are available in the literature, different in magnitude and threshold, hindering the understanding of CO 2 dissociation mechanisms under gas discharges. This work reports the experimental validation of the electron impact CO 2 dissociation cross section using two complementary methods: through the comparison of the measured rate coefficients with those derived from cross sections available in literature; and through the comparison of the experimental time evolution of the dissociation fraction with the simulations of a 0D model. A careful experimental approach was designed to avoid any influence from other dissociation mechanisms or chemical reactions. The experimental results match remarkably well the theoretical predictions from Polak and Slovetsky and establish the validity of the dissociation rate coefficients derived from their cross section. This validation supports the use of Polak and ...

中文翻译：

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CO 2的电子冲击解离

文献中提供了几种CO 2电子碰撞解离截面，其大小和阈值不同，这阻碍了对气体放电下CO 2分解机理的理解。这项工作报告了使用两种互补方法对电子碰撞CO 2解离横截面的实验验证：通过比较测得的速率系数与从文献中获得的横截面得出的速率系数；并通过将解离级分的实验时间演变与0D模型的仿真进行比较。设计了一种谨慎的实验方法，以避免受到其他解离机理或化学反应的影响。实验结果与Polak和Slovetsky的理论预测非常吻合，并确定了从其横截面得出的解离速率系数的有效性。此验证支持使用Polak和...