Gas temperature of capacitance spark discharge in air
Gas temperature of capacitance spark discharge in air
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DOI：
10.1063/1.1938274
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发表时间：
2005-06
影响因子：
3.2
通讯作者：
R. Ono;M. Nifuku;S. Fujiwara;Sadashige Horiguchi;T. Oda
中科院分区：
文献类型：
--
作者：
R. Ono;M. Nifuku;S. Fujiwara;Sadashige Horiguchi;T. Oda
电容火花放电被广泛用于研究静电放电引起的可燃气体点火。本文对电容火花放电气体温度进行了测量。气体温度是理解静电点火过程的一个重要因素，因为它影响点火反应速率。在空气中产生脉冲宽度小于100 ns的火花放电。放电能量设定为0.03- 1 mJ。利用N2第二正系统的发射光谱测量了N2分子的转动和振动温度。转动温度和振动温度分别为500和5000 K，与放电能量无关。这一结果表明，大部分的电子能量消耗在激发分子的振动能级，而不是加热的气体。放电后的气体温度也被测量的OH自由基的激光诱导荧光。这是...
Capacitance spark discharge has been widely used for studying the ignition of flammable gas caused by electrostatic discharge. In the present study, the gas temperature of capacitance spark discharge is measured. The gas temperature is an important factor in understanding the electrostatic ignition process because it influences the reaction rate of ignition. Spark discharge is generated in air with a pulse duration shorter than 100ns. The discharge energy is set to 0.03–1mJ. The rotational and vibrational temperatures of the N2 molecule are measured using the emission spectrum of the N2 second positive system. The rotational and vibrational temperatures are estimated to be 500 and 5000K, respectively, which are independent of the discharge energy. This result indicates that most of the electron energy is consumed in the excitation of vibrational levels of molecules rather than the heating of the gas. The gas temperature after discharge is also measured by laser-induced fluorescence of OH radicals. It is s...