Characteristics of plasma induced by interaction of a free-oscillated laser pulse with a coal target in air and combustible gas

doi:10.1016/j.ijhydene.2009.12.045

	Characteristics of plasma induced by interaction of a free-oscillated laser pulse with a coal target in air and combustible gas
	Yang QS(杨乾锁); Peng ZM(彭志敏); Yang QS
发表期刊	International Journal of Hydrogen Energy
	2010
卷号	35 期号:10 页码:4715-4722
ISSN	0360-3199
摘要	Plasma in the air is successfully induced by a free-oscillated Nd:YAG laser pulse with a peak power of 10(2-3) W. The initial free electrons for the cascade breakdown process are from the ablated particles from the surface of a heated coal target, likewise induced by the focused laser beam. The laser field compensates the energy loss of the plasma when the corresponding temperature and the images are investigated by fitting the experimental spectra of B-2 Sigma(+) -> X-2 Sigma(+) band of CN radicals in the plasma with the simulated spectra and a 4-frame CCD camera. The electron density is estimated using a simplified Kramer formula. As this interaction occurs in a gas mixture of hydrogen and oxygen, the formation and development of the plasma are weakened or restrained due to the chaining branch reaction in which the OH radicals are accumulated and the laser energy is consumed. Moreover, this laser ignition will initiate the combustion or explosion process of combustible gas and the minimum ignition energy is measured at different initial pressures. The differences in the experimental results compared to those induced by a nanosecond Q-switched laser pulse with a peak power of 10(6-8) W are also discussed. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
DOI	10.1016/j.ijhydene.2009.12.045
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收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000278418700028
关键词[WOS]	IGNITION ; MIXTURES ; RADIATION ; DISCHARGE ; BREAKDOWN ; VOLUME ; BEAM
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
项目资助者	National Science Foundation of China [10472123]
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/43565
专题	高温气体动力学国家重点实验室
通讯作者	Yang QS
推荐引用方式 GB/T 7714	Yang QS,Peng ZM,Yang QS. Characteristics of plasma induced by interaction of a free-oscillated laser pulse with a coal target in air and combustible gas[J]. International Journal of Hydrogen Energy,2010,35,10,:4715-4722.
APA	Yang QS,Peng ZM,&Yang QS.(2010).Characteristics of plasma induced by interaction of a free-oscillated laser pulse with a coal target in air and combustible gas.International Journal of Hydrogen Energy,35(10),4715-4722.
MLA	Yang QS,et al."Characteristics of plasma induced by interaction of a free-oscillated laser pulse with a coal target in air and combustible gas".International Journal of Hydrogen Energy 35.10(2010):4715-4722.

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