基本信息课题组新闻科学研究论文专著English Version
基本信息
李晓晖，博士，哈尔滨工业大学光电子技术研究所讲师，硕士生导师。2014年毕业于哈尔滨工业大学物理电子学专业，获博士学位。主要从事激光诱导等离子体点火和增强燃烧、激光诱导击穿光谱、激光诱导荧光光谱等工作。作为项目负责人承担国家自然科学基金项目1项、中国博士后基金面上项目（一等）1项、中国博士后基金特别资助项目1项、黑龙江省博士后基金面上项目（一等）1项、中央高校基本科研业务费专项资金项目1项、高超声速冲压发动机技术重点实验室开放基金项目1项；作为课题副组长承担国家自然科学基金重大研究计划项目1项，完成军口863项目6项；作为课题骨干参加了国家高分重大专项“******激光雷达”和国家重大科学仪器设备开发专项“高速平面激光诱导成像诊断仪”的研究工作。在Optics Letter, Optics Experss, Journal of Analytical Atomic Spectroscopy等光学和光谱学顶级期刊和CLEO、International Symposium on Laser Induced Breakdown Spectroscopy等顶级会议上发表论文36篇，申请国家发明专利9项，授权2项。担任Optics Express, Journal of Analytical Atomic Spectroscopy, Spectrochimica Acta A, Spectrochimica Acta B, Journal of Biophotonics, Journal of Physics D等知名期刊特邀审稿人。

教育经历
2002.09-2006.07, 哈尔滨工业大学 电子科学与技术专业, 本科2006.09-2008.07, 哈尔滨工业大学 物理电子学专业, 硕士2010.03-2014.03, 哈尔滨工业大学 物理电子学专业, 博士2011.10-2012.10, 佛罗里达大学 分析化学专业, 联合培养博士


工作经历
2008.07-2010.02，中科院长春光机所空间光学部，研究实习员2011.09-2014.04，哈尔滨工业大学， 助教2014.04至今，哈尔滨工业大学，讲师2015.05至今，哈尔滨工业大学，硕士生导师


荣誉称号

名称博士生奖学金

获奖时间2013

获奖地点,颁奖机构中华人民共和国教育部


课题组动态
2016年

2016年9月，欢迎 莫斯科国立大学的Sergey Fedorov来课题组进行为期半年的访学。

2016年6月，祝贺课题组 赵爽 同学硕士毕业，祝贺她的硕士论文获得“哈尔滨工业大学优秀硕士论文（银奖）”荣誉称号

2016年5月，李晓晖获得中国博士后基金特别资助，http://today.hit.edu.cn/news/2016/06-12/**RL1.htm。

2016年3月，李晓晖获得高超声速冲压发动机技术重点实验室面上项目资助。

2015年

2015年10月，李晓晖获得黑龙江省博士后基金（一等)资助。

2015年9月，欢迎安小康同学加入课题组。

2015年9月，李晓晖赴四川绵阳参加了中国博士后西部服务团四川绵阳行活动。

2015年8月，李晓晖获得国家自然科学基金青年基金资助。

2015年7月，祝贺周凌峰硕士论文获得“哈尔滨工业大学优秀硕士论文（银牌）”荣誉称号。

2015年7月，祝贺周凌峰、聂志宇同学毕业。

2015年6月，李晓晖赴中国武汉参加了武汉光电国家实验室主办的第1届亚洲激光诱导击穿光谱会议ASLIBS 2014，并做报告。

2015年5月，李晓晖获得中国博士后基金面上项目资助（一等）。

2015年5月，李晓晖赴美国圣何塞参加了CLEO会议，并做报告。

2015年4月，李晓晖赴美国芝加哥参加了美国阿贡国家实验室主办的第三届激光点火会议，并做报告。



2014年

2014年9月，李晓晖赴中国北京参加第8届激光诱导击穿光谱会议LIBS2015，并做报告。

2014年7月，祝贺刘倡，赵爽同学毕业。

2014年6月，李晓晖赴俄罗斯圣彼得堡参加第9届等离子体辅助技术国际会议ICPAT9，并做报告。

研究领域
激光等离子体点火和增强燃烧技术

激光等离子体点火和增强燃烧是通过激光等离子体引起的热效应和燃烧化学反应，实现混合燃气的高效可靠点火，提高火焰传播速度，增强火焰稳定性。具有点火位置和时序精确可控、工况适应性好、电磁干扰小、可实现多点点火等优点，在贫燃燃烧系统、火箭发动机、超燃冲压发动机等先进动力系统的可靠重复点火、高效稳定燃烧等方面具有重要的应用价值。课题组采用发射光谱、纹影、激光诱导荧光等技术开展甲烷-空气预混火焰、甲烷射流扩散火焰的激光等离子体点火和增强燃烧的特性和机理研究，开展激光直接击穿等离子体、激光烧蚀等离子体点火和增强燃烧等新型点火和助燃技术研究。在模型火箭发动机、模型超燃冲压发动机上开展了激光等离子体点火和助燃系列外场试验，实现了甲烷、氢气、煤油等燃料的成功点火。

激光诱导等离子体光谱技术

激光诱导等离子体光谱技术( LIBS）通过在样品表面或样品中产生激光等离子体，借助等离子体的发射光谱实现对样品成分的诊断，具有装置简单、无需样品制备的优点。重点关注激光诱导等离子体及其与物质相互作用的动力学过程、等离子体的特性表征、LIBS-LIF组合光谱技术、飞秒LIBS技术等。
燃烧和等离子体的激光/光学诊断技术

课题组采用激光诱导荧光、发射光谱、纹影等光学诊断技术，针对典型燃烧场和等离子体对象开展非接触测量诊断研究。

科研项目
激光等离子体助燃温度和活性粒子浓度的原位诊断研究，2016.01-2018.12，国家自然科学基金，25.2万，负责人基于光谱诊断的激光等离子体助燃机制研究，2015.05-2016.12，中国博士后基金面上项目（一等），8万，负责人高重频激光等离子体助燃特性和机理研究，2016.03-2016.12，中国博士后特别资助，15万，负责人激光诱导等离子体点火与助燃技术研究，2015.07-2016.12，重点实验室开放基金，20万，负责人甲烷-空气混合燃气激光等离子体助燃特性和机理研究，2015.09-2016.12，黑龙江省博士后基金（一等），10万，负责人CH4/Air预混火焰激光等离子体稳燃火核动力学特性研究，2016.01-2017.12，中央高校基本科研业务费基金，5万，负责人高速平面激光诱导荧光超声速燃烧诊断研究，2015.01-2017.12，国家自然科学基金重大研究计划项目，80万，课题副组长****激光等离子体点火技术研究，2014.08-2015.06，863计划，100万，课题副组长****助燃技术研究，2014.10-2015.06，863计划，45万，课题副组长****激光等离子体点火技术研究，2014.08-2015.06，863计划，50万，课题副组长


团队成员
在读学生杨思博（硕士研究生，2017.09入学）

谢金美（硕士研究生，2018.09入学）

张瑶（硕士研究生，2018.09入学）
毕业学生

于杨，硕士，2013.07毕业，本校直攻博

刘倡，硕士，2014.07毕业，哈工大（鞍山）工业技术研究院

周凌峰，硕士，2015.07毕业，哈工大优秀毕业硕士研究生（银奖)，中兴通讯股份有限公司

聂志宇，本科，2015.07毕业，中航工业哈尔滨飞机工业集团有限公司

赵爽，硕士，2016.07毕业，哈工大优秀毕业硕士研究生（银奖），中航工业北京研究院

安小康，硕士，2017.07毕业，中兴通讯股份有限公司

王奥博，本科，2018.07毕业，华为通讯


招生信息
每年招收硕士研究生1-2名。

如有意报考，请将个人简历发送到 lixiaohui@hit.edu.cn


代表性文章
2016年

X. Li, Y. Yu, J. Peng, X. Yu, R. Fan, R. Sun, D. Chen, Laser ablation plasma-assisted stabilization of premixed methane/air flame, Applied Physics B, 122 (2016) 1-7.

X. Li, L. Yang, Y. Yu, J. Peng, X. Yu, J. Liang, Laser spark ignition of kerosene in Ma 2.52 supersonic flow, in:The 4th Laser Ignition Conference 2016 (LIC@#% 16), Yokohama, Japan, 2016.

于杨, 李晓晖, 赵爽, 安小康, 于欣, 陈德应, 基于激光诱导等离子体分子光谱测量激光等离子体助燃过程的温度演化特性, in:第四届中国激光诱导击穿光谱技术研讨会（CSLIBS 2016）, 沈阳, 2016.

李晓晖, 于欣, 激光等离子体点火在航空航天动力系统的应用, 红外与激光工程, 已录用 (2016).

2015年

于欣, 李晓晖, 激光等离子体点火在航空航天动力系统的应用, in:激光聚变能源检测与驱动技术研讨会, 成都, 2015.

X. Li*, R. Fan, Y. Yu, X. Yu, D. Chen, R. Sun, Laser Spark Ignition of LOX/LCH4 Propellant on an Optically-Accessible Combustor, in:The 3rd laser ignition conference, Argonne National Laboratory, USA, 2015.

X. Li*, X. Yu, Y. Yu, R. Fan, D. Chen, R. Sun, Stabilization of Premixed High Flow Speed Methane/air Flames Using a Nanosecond Laser Induced Plasma, in:CLEO 2015, San Jose, CA, 2015.

X. Li*, Y. Yu, X. Yu, R. Fan, R. Sun, D. Chen, N. Omenetto, Local Equivalence Ratio Measurement Using Laser Induced Breakdown Spectroscopy for Laser Spark Ignition Mechanism Investigation, in:The 1st Asian Symposium on Laser Induced Breakdown Spectroscopy, Wuhan, China, 2015.

L. Yang, X. Li, J. Liang, Y. Yu, X. Yu, Laser-Induced Plasma Ignition of Hydrocarbon Fuel in Supersonic Flows, in:20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference Glasgow, Scotland, 2015.

2014年

Xiaohui Li, Nicolo Omenetto, B.W. Smith, Laser Spark Ignition of Premixed Methane-Air Mixtures: Parameter Measurements and Determination of Key Factors for Ultimate Ignition Results, Applied Spectroscopy, 68 (2014) 975-991.(SCI收录, IF=2.014)

Li Xiaohui, Yu Xin, Fan Rongwei, Yu Yang, Liu Chang, Chen Deying. Laser Ablation Ignition of Premixed Methane and Oxygen-Enriched Air Mixtures Using a Tantalum Target [J]. Optics Letters, 2014, 39 (1):139-141. (SCI,IF=3.385)

Li Xiaohui, Yu Yang, Yu Xin, Liu Chang, Fan Rongwei, Chen Deying. Laser Induced Spark Ignition of Coaxial Methane/Oxygen/Nitrogen Diffusion Flames [J]. Optics Express, 2014, 22(3):3447-3457. (SCI收录, IF=3.546)X. Li, Y. Yu, J. Peng, R. Fan, X. Yu, D. Chen, Laser Induced Plasma Ignition and Flameholding of High-speed Premixed Methane/Air Flames. The 8th International Conference on Laser Induced Breakdown Spectroscopy (LIBS2014), Beijing, China, 2014.

D. Chen, X. Li, X. Yu, J. Peng, Y. Yu, R. Fan, Effect of OH radical on the final outcome of laser induced plasma ignition of premixed methane/air mixtures, 9th International Conference on Plasma Assisted Technologies (ICPAT-9), Saint-Petersburg, Russia, 2014.

Li Xiaohui, Smith B W, Omenetto N. Relative Spectral Response Calibration of a Spectrometer System for Laser Induced Breakdown Spectroscopy Using the Argon Branching Ratio Method [J]. Journal of Analytical Atomic Spectrometry, 2014, 29:657-664. (SCI收录,IF=3.155)

Li Xiaohui, Fan Rongwei, Yu Xin, Chen Deying. Investigation of Energy Transfer between PM567:Rh610 Dye Mixture in Modified Poly(methyl methacrylate) [J]. Journal of Luminence, 2014, 145:202-207. (SCI收录,IF=2.144)

2013年

Li Xiaohui, Fan Rongwei, Zhu Hai, Yu Xin, Chen Deying. Characterization of Laser Induced Plasmas in Nitrogen Using an Ungated Spectrometer [J]. Journal of Quantative Spectroscopy and Radiative Transfer, 2013, 118:1-7. (SCI收录, IF=2.380)

X. Li, D. Shelby, B.W. Smith, N. Omenetto, Atomic and Molecular Fluorescence Experiments in Laser Induced Plasmas: Recent Results And Considerations, in:7th Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy, Bari, Italy, 2013.

Li Xiaohui, Fan Rongwei, Yu Xin, Chen Deying. Investigation of Energy Transfer from Pyrromethene Dyes to Cresyl Violet 670 in Ethanol [J].Chinese Physics B, 2013, 22(12):123402. (SCI收录,IF=1.148)

R. Fan, H. Zhu, X. Li, J. Peng, X. Yu, D. Chen, Characterization of Laser-Induced Plasma in Nitrogen, J. Russ. Laser Res., 34 (2013) 369-374.

Curriculum Vitae
1.Personal data

Born in Lüliang City, Shanxi, China, in 1983
Address: Room 204, Bld. 2A, NO. 2 Yikuang Street, Harbin, ChinaEmail: lixiaohui@hit.edu.cnPresent position: Assistant Professor, Institute of Opto-Electronics, Harbin Institute of Technology2. Academic Qualifications

Bachelor of Engineering (2006), Harbin Institute of Technology, China
Master of Engineering (2008), Harbin Institute of Technology, China
Doctor of Engineering (2014), Harbin Institute of Technology, China
3. Professional Affiliations
2008.07-2010.02Research Assistant, Changchun Institute of Optics, Fine Mechanics and Physics, CAS2011.09-2014.03Teaching Assistant, Institute of Opto-Electronics, Harbin Institute of TechnologySince 2014.04Assistant Professor, Institute of Opto-Electronics, Harbin Institute of Technology
4.Research interests

The research interests of Dr. Li include:

(1) laser induced plasma ignition and flameholding

applications on various combustion systems (premixed/non-premixed, laminar/turbulent) of different scales from laboratory Bunsen burner to practical model engines with different oxidant-fuel combinations, including LOX/LCH4, GOX/GCH4, LOX/GCH4, GOX/GH2.
development of novel ignition schemes to reduce laser pulse energy and improve ignition reliability, e.g., laser ablation ignition, multi-point ignition, burst pulse ignition
ignition and stabilization of high speed combustion systems under natural blow out conditions using high repetition laser induced plasma
diagnostics of temperature and radical evolution during the plasma ignition process, using emission spectroscopy, PLIF and CARS
mechanismof laser induced plasma ignition and flameholding using optical diagnostics and chemical reaction calculation
(2) Laser Induced Breakdown Spectroscopy (LIBS)
development of cost-effective LIBS system and novel calibration method
applications on combustion diagnostics, biomedical samplesfemtosecond LIBSdouble-pulse LIBS and LIBS-LIF
5.Research grants

Dr. Li has been granted several funding with a total value of over 3.78 million RMB Yuan, as principal investigator or associate principal investigator, including:

？General grant of National Natural Science Foundation of China (NSFC), principal investigator

？First class general grant from China Postdoctoral Science Foundation, principal investigator

？First class general grant from Heilongjiang Provincial Postdoctoral Science Foundation, principal investigator

？Special Fund from China Postdoctoral Science Foundation, principal investigator

？Fundamental Research Funds for the Central Universities, principal investigator

？Grant of National Key Laboratory on Scramjet, principal investigator

？Grant for Major Plan of National Natural Science Foundation of China (NSFC), associate principal investigator

？6 Grants from China High-Tech Research and Development Project (“863” Plan Project), associate PI

？National Special Grant for High Resolution Remote Sensing, major participant

？National Key Scientific Instrument and Equipment Development Projects of China, major participant


Group member
Current members

Yang Yu, Ph. D student (2013)Xiaokang An, Master student (2015)Sergey Fedorov, Exchange Master student from Moscow State University, Russia (2016)Alumni network:

Yang Yu, Master student, 2013, Ph.D student of HIT
Chang Liu, Master student, 2014, Anshan Academy of Industry, Anshan, China
Linfeng Zhou, Master student, 2015, ZTE Inc., Shenzhen, ChinaShuang Zhao, Master student, 2016, Aviation Industry Corporation of China, Beijing China
Students@#% Award:

Linfeng Zhou, Best Masters@#% Thesis Award of HIT (Silver Medal), 2015Shuang Zhao, Best Masters@#% Thesis Award of HIT (Silver Medal), 2016Positions:

One position for master student is availble each year. Several positions for foreign exchange students are availble.

Please feel free to contact Dr. Li through voice (+86-**) or email (lixiaohui@hit.edu.cn).


Group news
Sep. 2016, We welcome Mr. Sergey Fedorov from Moscow State University as an exchange master student.

Research
1. Laser-induced plasma ignition (LIPI)

Laser induced plasma ignition (LIPI) is a novel technique that is proposed to solve the problems confronting conventional ignition techniques, such as electric spark plug, in the combustion systems working under extreme conditions, for example, the lean-burn natural gas engines, rocket engines and scramjet engines. The oxidant/fuel mixture is ignited by the laser induced plasma with the joint function of thermal effect and combustion reaction effect induced by the plasma.Compared with the conventional ignition systems, LIPI has many advantages, such as easier control of the ignition position and timing, wider ignitable condition, less electromagnetic interference and feasibility of multipoint ignitions.

Focusing on the mechanism and applications of the LIPI, we have made several achievements listed in the following:
(1) By investigating the correlation of the local equivalence ratio, laser spark energy and radical concentration with the ultimate ignition results, in combination with chemical dynamical simulation using the CHEMKIN software, the key factor affecting the ultimate ignition results has been determined as the OH radical concentration in the initial flame kernels in the early time following the onset of the laser plasma. A joint thermal and chemical reaction ignition mechanism for the LIPI has been proposed, emphasizing the importance of chemical reaction in the LIPI process, and the indirect ignition model by the residual hot-gas after the shock wave has been improved.



Fig. 1 Correlation of the OH radical concentration, laser spark energy, and local equivalence ratio with the ultimate ignition results. High laser spark energy and local equivalence ratio near the stochiometry tend to result in higher OH radical concentration and lead to successful ignition. [1]

(2) The parameters pertinent to the laser induced plasma ignition, including the minimum ignition energy, the ignition and blow out times, and the effects that the variation of experimental conditions such as the spark energy, ignition position, equivalence ratio and flow rate have on these parameters have been systematically investigated. The results can serve as references for the systematic design and evaluation of combustion systems that apply this ignition technique.



Fig. 2 Minimum ignition energy (plasma energy) of LIPI on a premixed methane/air flame [1]

(3) The LIPI has been extended from premixed laminar system to coaxial diffusion systems. The distributions of the minimum ignition energy and ignition delay time have been found to be closely related to the local equivalence ratio.



Fig. 3 Contour distribution of minimum ignition energy in mili-joule and ignition time in microsecond above a coaxial burner tube. The oxygen/nitrogen mixture comes from the central tube, while methane comes from the annulus tube [2].

(4) The laser ablation ignitiontechnique, i.e. ignition using the laser ablation plasma instead of direct gas breakdown, has been proposed to reduce the minimum laser pulse energy for ignition. The minimum laser pulse energy for ignition has been reduced by one order of magnitude for premixed methane and oxygen-enriched air mixtures, compared with that of gas breakdown. This will promote the minimization of the laser systems for ignition and the practical applications of the LIPI.



Fig. 4 The minimum laser pulse energy is reduced uising laser ablation ignition instead of direct laser gas breakdown ignition[3].
(5) The LIPI has been applied to practical model rocket engines. With an optically accessible model combustor, we have achieved successful ignition of several propellant combinations, including LOX/LCH4, LOX/GCH4, GOX/GCH4, and GOX/GH2, on different types of nozzles, including impinging, coaxial and centrifugal ones. Systematic investigations on different ignition schemes, including the direct breakdown vs. laser ablation, single point vs. multi-point, and repetitive vs. burst pulse ignitions have been performed.



Fig. 5 Model optically-accessible combustor and optical layout for LIPI [4]



Fig. 6 Temporal sequence of an typical successful LIPI event [4]

2.Laser-induced plasma-assisted combustion (LIPAC)

LIPAC is improving the combustion behaviors using high repetitive laser-induced plasmas. We have investigated flame stabilization of premixed methane-air flames with a ns Nd:YAG laser with a repetition rate up to 100 Hz. Quasi-stable combustion was achieved under natural blow-off conditions with both direct gas breakdown plasma and laser ablation plasma.



Fig. 7 Photographs of laser ablation plasma-stabilized premixed methane/air flames with different flow speeds [5]

References:

[1] X. Li, N. Omenetto, and B. W. Smith, Applied Spectroscopy 68, 975 (2014).

[2] X. Li, Y. Yu, X. Yu, C. Liu, R. Fan, and D. Chen, Optics Express 22, 3447 (2014).

[3] X. Li, X. Yu, R. Fan, Y. Yu, C. Liu, and D. Chen, Optics Letters 39, 139 (2014).

[4] X. Li, R. Fan, Y. Yu, X. Yu, D. Chen, and R. Sun," Laser Spark Ignition of LOX/LCH4 Propellant on an Optically-Accessible Combustor" The 3rd laser ignition conference;paper Th2A.2 (Argonne National Laboratory, USA, 2015).

[5] X. Li, Y. Yu, J. Peng, X. Yu, R. Fan, R. Sun, and D. Chen, Applied Physics B 122, 14 (2016).


Publications
List of publications since 2010 (* indicates the corresponding author):

Papers in Refereed Journals:

？X. Li*, Y. Yu, J. Peng, X. Yu, R. Fan, R. Sun, D. Chen, Laser ablation plasma-assisted stabilization of premixed methane/air flame, Applied Physics B, 122 (2016) 14.

？X. Li* and X. Yu, Application of laser plasma ignition on aerospace propulsion systems: a review, Infrared and Laser Enginerring, to be Published (In Chinese).

？X. Li*, X. Yu, R. Fan, Y. Yu, C. Liu, D. Chen, Laser ablation ignition of premixed methane and oxygen-enriched air mixtures using a tantalum target, Optics Letters, 39 (2014) 139-141. (IF=3.385)

？X. Li, Y. Yu, X. Yu, C. Liu, R. Fan, D. Chen*, Laser induced spark ignition of coaxial methane/oxygen/nitrogen diffusion flames, Optics Express, 22 (2014) 3447-3457. (IF=3.546)

？X. Li*, B.W. Smith, N. Omenetto*, Relative Spectral Response Calibration of a Spectrometer System for Laser Induced Breakdown Spectroscopy Using the Argon Branching Ratio Method, Journal of Analytical Atomic Spectrometry, 29 (2014) 657-664. （IF=3.155）

？X. Li*, N. Omenetto*, B.W. Smith, Laser Spark Ignition of Premixed Methane-Air Mixtures: Parameter Measurements and Determination of Key Factors for Ultimate Ignition Results, Applied Spectroscopy, 68 (2014) 975-991.（IF=2.014）

？X. Li, R. Fan, X. Yu, D. Chen*, Investigation of energy transfer between PM567:Rh610 dye mixture in modified poly (methyl methacrylate), Journal of Luminescence, 145 (2014) 202-207. (IF=2.144)

？X. Li, R. Fan, H. Zhu, X. Yu, D. Chen*, Characterization of laser induced plasmas in nitrogen using a ungated spectrometer, J. Quant. Spectrosc. Radiat. Transfer, 118 (2013) 1-7.( IF=2.380)

？X. Li, R. Fan, X. Yu, D. Chen*, Investigation of energy transfer from pyrromethene dye to cresyl violet 670 in ethanol, Chinese Physics B, 22 (2013) 123402. (IF=1.148)

？R. Fan, H. Zhu, X. Li, J. Peng, X. Yu, D. Chen*, Characterization of Laser-Induced Plasma in Nitrogen, J. Russ. Laser Res., 34 (2013) 369-374. (IF=0.743)

？P. He, R.W. Fan, D.Y. Chen*, X. Li, Y.Q. Xia, X. Yu, J.L. Wang, Y.G. Jiang, Femtosecond time-resolved ERE-CARS of PM650, Opt. Commun., 285 (2012) 3284-3288. (IF=1.438)

？P. He, S. Li, R. Fan, X. Li, Y. Xia, X. Yu, D. Chen*, Selective excitation of molecular mode in a mixture by femtosecond resonance-enhanced coherent anti-Stokes Raman scattering spectroscopy, Chinese Physics B, 21 (2012) 027801. （IF=1.515）

？P. He, R. Fan, D. Chen*, X. Li, Y. Xia, X. Yu, Y. Yao, Ultrafast time-resolved coherent degenerate four-wave-mixing spectroscopy for investigating molecular dynamics in different states, Optics & Laser Technology, 43 (2011) 1458-1461. （IF=1.376）

？X. Yu, J.B. Peng, R. Sun, X.C. Yang, C.H. Wang, J. Sun, X. Li, B. Jia, Y. Zhao, D. Chen, Stabilization of a premixed CH4/O2/N2 flame using femtosecond laser-induced plasma, Opt. Lett., 37 (2012) 2106-2108. (IF=3.385)

Conference contributions:

？X. Li*, L. Yang*, Y. Yu, J. Peng, X. Yu, J. Liang, Laser spark ignition of kerosene in Ma 2.52 supersonic flow,The 4th Laser Ignition Conference 2016 (LIC@#% 16), Yokohama, Japan, 2016.

？L. Yang*, X. Li*, J. Liang, X. Yu, X. Li, Perspective of laser-induced plasma ignition of hydrocarbon fuel in Scramjet engine, Proc. SPIE 9796: 97962I

？X. Li*, X. Yu, Y. Yu, R. Fan, D. Chen, R. Sun, Stabilization of Premixed High Flow Speed Methane/air Flames Using a Nanosecond Laser Induced Plasma, CLEO 2015, San Jose, CA, 2015.

？X. Li*, R. Fan, Y. Yu, X. Yu, D. Chen, R. Sun, Laser Spark Ignition of LOX/LCH4 Propellant on an Optically-Accessible Combustor, The 3rd laser ignition conference, Argonne National Laboratory, USA, 2015.

？X. Li*, Y. Yu, X. Yu, R. Fan, R. Sun, D. Chen, N. Omenetto, Local Equivalence Ratio Measurement Using Laser Induced Breakdown Spectroscopy for Laser Spark Ignition Mechanism Investigation, The 1st Asian Symposium on Laser Induced Breakdown Spectroscopy, Wuhan, China, 2015.

？L. Yang*, X. Li*, J. Liang, Y. Yu, X. Yu, Laser-Induced Plasma Ignition of Hydrocarbon Fuel in Supersonic Flows, 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference Glasgow, Scotland, 2015.

？X. Yu, X. Li*, Application of Laser Induced Plasma Ignition in aeronautic and astronautic propulsion system. Conference on Detection and Actuator Technology of Laser Confined Fusion, Chengdu, 2015.(Invited)

？X. Li*, Y. Yu, J. Peng, R. Fan, X. Yu, D. Chen, Laser Induced Plasma Ignition and Flameholding of High-speed Premixed Methane/Air Flames, in:The 8th International Conference on Laser Induced Breakdown Spectroscopy (LIBS2014), Beijing, China, 2014.

？X. Li, D. Shelby, B.W. Smith, N. Omenetto*, Atomic and Molecular Fluorescence Experiments in Laser Induced Plasmas: Recent Results And Considerations, in:7th Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy, Bari, Italy, 2013.

？D. Chen*, X. Li, X. Yu, J. Peng, Y. Yu, R. Fan, Effect of OH radical on the final outcome of laser induced plasma ignition of premixed methane/air mixtures, 9th International Conference on Plasma Assisted Technologies (ICPAT-9), Saint-Petersburg, Russia, 2014.