IMECH-IR  > 高温气体动力学国家重点实验室
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
Source PublicationInternational Journal of Hydrogen Energy
2010
Volume35Issue:10Pages:4715-4722
ISSN0360-3199
AbstractPlasma 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.
DOI10.1016/j.ijhydene.2009.12.045
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000278418700028
WOS KeywordIGNITION ; MIXTURES ; RADIATION ; DISCHARGE ; BREAKDOWN ; VOLUME ; BEAM
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
Funding OrganizationNational Science Foundation of China [10472123]
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43565
Collection高温气体动力学国家重点实验室
Corresponding AuthorYang QS
Recommended Citation
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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