收藏 | 论文排版

Utilization of Calibration Free Femtosecond Laser-Induced Breakdown Spectroscopy (CF-LIBS) for Monitoring of the Elemental Composition in Poplar Tree Leaves

Medhanie Kahsay Debesay  
【摘要】:Calibration free laser-induced breakdown spectroscopy (CF-LIBS) technique was applied to analyze the plasma formed by focusing a Ti:sapphire chirped pulse amplification laser system operated at around 800 nm at a repetition rate of 10 Hz and the pulse width of the laser beam was approximately 100 fs on the surface of poplar tree leaves in air at atmospheric pressure. The application of the this technique is to determine the elemental composition of poplar tree leaves without need of reference samples(internal standard). The technique includes the following steps:i) The electron density was obtained using stark broadening of well-isolated Mn 1(280.106 nm) line in the plasma.ⅱ) The Boltzmann's method was used as a guess estimation of the plasma temperature and this plasma temperature was refined by Saha-Boltzmann's method in order to obtain more reliable and accurate result under the assumption of local thermodynamic equelibrium (LTE), optically thin plasma, and stoichiometric concervations. It has been found that the Saha-Boltzmann's plot is more reliable and accurate than Boltzmann's plot for determination of plasma temperature.ⅲ) Partition function of each species of the emitted radiation was obtained at the average value of the plasma temperature.ⅳ) The composition of the elements in poplar tree leaves was analyzed by eliminating the experimental factor though normalization. The same metallic elements Ca, Fe. Mn, Ti, Na, Ni, Al and non-metallic elements P, N, O were identified in all of the leaves collected from different sites in Changchun city. The obtained result indicate that the concentrations of Ca, Fe, Mn, Ti, Na, Ni, Al and P have been found to increase from less polluted to high polluted area in units of parts per million (ppm). Moreover, the effect of change in concentration of the elements on plasma parameters (plasma temperature and electron density) has been discussed.

中国期刊全文数据库 前19条
1 赵朋程;廖成;杨丹;钟选明;;Validity of the two-term Boltzmann approximation employed in the fluid model for high-power microwave breakdown in gas[J];Chinese Physics B;2014年05期
2 孙对兄;苏茂根;董晨钟;张大成;马新文;;A Semi-Quantitative Analysis of Essential Micronutrient in Folium Lycii Using Laser-Induced Breakdown Spectroscopy Technique[J];Plasma Science and Technology;2010年04期
3 孙海轶,徐至展,贾天卿,李晓溪,李成斌,冯东海,徐世珍,葛晓春;Femtosecond laser-induced breakdown of multilayers and gold film[J];Chinese Optics Letters;2005年01期
4 王莹;陈安民;李苏宇;隋来志;刘敦利;李舒畅;李贺;姜远飞;金明星;;Re-Heating Effect on the Enhancement of Plasma Emission Generated from Fe Under Femtosecond Double-Pulse Laser Irradiation[J];Plasma Science and Technology;2016年12期
5 付洪波;倪志波;王华东;贾军伟;董凤忠;;Accuracy improvement of calibration-free laser-induced breakdown spectroscopy[J];Plasma Science and Technology;2019年03期
6 林晓梅;李晗;姚清华;;Signal Detection of Carbon in Iron-Based Alloy by Double-Pulse Laser-Induced Breakdown Spectroscopy[J];Plasma Science and Technology;2015年11期
7 赵琳娜;于沛洪;郭子骧;闫大为;周浩;吴锦波;崔志强;孙华锐;顾晓峰;;Progressive current degradation and breakdown behavior in GaN LEDs under high reverse bias stress[J];Chinese Physics B;2017年08期
8 刘栋;陈传松;满宝元;孙艳娜;李菲菲;;Theoretical and experimental investigations on the threshold of a laser-induced breakdown of air[J];Chinese Optics Letters;2016年04期
9 李琦;李海鸥;唐宁;翟江辉;宋树祥;;New SOI power device with multi-region high-concentration fixed interface charge and the model of breakdown voltage[J];Chinese Physics B;2015年03期
10 田晓丽;陆江;滕渊;张文亮;卢烁今;朱阳军;;Backside optimization for improving avalanche breakdown behavior of 4.5 kV IGBT[J];Journal of Semiconductors;2015年03期
11 王辉辉;刘大刚;刘腊群;蒙林;;Microwave propagation with the gas breakdown[J];Chinese Physics B;2014年11期
12 王小华;杨爱军;荣命哲;刘定新;;Numerical Study on Atmospheric Pressure DBD in Helium:Single-breakdown and Multi-breakdown Discharges[J];Plasma Science and Technology;2011年06期
13 ;The influence of the sand-dust environment on air-gap breakdown discharge characteristics of the plate-to-plate electrode[J];Science China(Physics,Mechanics & Astronomy);2010年03期
14 ;Electrical breakdown characteristic of a Ce-doped W-Cu contact material[J];Rare Metals;2010年03期
15 李小刚;冯志成;张正元;胡明雨;;A charge allocating model for the breakdown voltage calculation and optimization of the lateral RESURF devices[J];半导体学报;2009年03期
16 Gordienko P.S.;Vasilenko O.S.;Dostovalov V.A.;Panin E.S.;Bulanova S.B.;;Energy flows control in breakdown zones during the coating formation in electrolytes at high potentials[J];广东有色金属学报;2005年Z1期
17 丁大勇,金维兴,李培;The research of breakdown structure and coding system for construction project[J];Journal of Harbin Institute of Technology;2004年04期
18 赵朋程;郭立新;舒盼盼;;Effect of air breakdown on microwave pulse energy transmission[J];Chinese Physics B;2017年02期
19 傅杨挺;侯宗余;出口祥啓;王哲;;From big to strong: growth of the Asian laser-induced breakdown spectroscopy community[J];Plasma Science and Technology;2019年03期
中国重要会议论文全文数据库 前10条
1 ;The single machine repairable system with service breakdown[A];Proceedings of 2010 Chinese Control and Decision Conference[C];2010年
2 Kwangho Park;;Mechanism and prevention of cascading breakdown in complex networks[A];第二届全国复杂动态网络学术论坛论文集[C];2005年
3 D.Liu;C.S.Chen;B.Y.Man;X.Meng;X.J.Chen;;Theoretical and Experimental Studies on Threshold of the Laser-induced Air Breakdown[A];第五届全国计算原子与分子物理学术会议摘要及墙贴[C];2014年
4 郭宇锋;;An Analytical Approach to the 2-D Distribution of the Electric Field and Breakdown Voltage in SOI lateral power Transistors[A];第一届中国高校通信类院系学术研讨会论文集[C];2007年
5 ;The M/M/1 Repairable Queueing System with Variable Breakdown Rates[A];2009中国控制与决策会议论文集(2)[C];2009年
6 赵亮;苏建仓;;Phenomena on Cumulative Breakdown Process of Organic Glass under Microsecond Pulses[A];第十八届全国等离子体科学技术会议摘要集[C];2017年
7 ;Signal enhancement of the double femtosecond pulse laser-induced breakdown spectroscopy of nickel[A];第十六届全国原子与分子物理学术会议论文摘要集[C];2011年
8 LAN Li;YIN Yi;PANG Aili;FEI Fei;LI Yinong;;Breakdown Property of LDPE Silica Nanocomposite Used in HVDC Cable Insulation[A];输变电工程技术成果汇编——国网上海经研院青年科技论文成果集[C];2017年
9 赵建林;姚军;杨永飞;王金伟;张磊;孙海;;基于格子Boltzmann方法研究吸附性对页岩气流动的影响[A];第九届全国流体力学学术会议论文摘要集[C];2016年
10 冉政;陈健;;关于格子Boltzmann方法的几个问题[A];中国力学大会-2015论文摘要集[C];2015年
中国博士学位论文全文数据库 前10条
1 Muhammad Rafiq;氧化铝纳米变压器油纸绝缘的电气性能与改性机理研究[D];华北电力大学(北京);2017年
2 罗康;电热对流格子-Boltzmann模拟及稳定性分析[D];哈尔滨工业大学;2017年
3 徐磊;格子Boltzmann方法及其并行算法研究[D];上海大学;2018年
4 乔龙;基于液滴热流体动力学的多相流体格子Boltzmann模型及应用研究[D];重庆大学;2018年
5 杨波;非等温颗粒液滴悬浮流的格子Boltzmann模拟[D];华中科技大学;2018年
6 王会利;多相流体流动与传热的相场格子Boltzmann方法研究[D];华中科技大学;2018年
7 吴家阳;发展浸没边界-格子Boltzmann方法模拟水电工程流场[D];武汉大学;2018年
8 王政道;基于格子Boltzmann方法的对流换热的数值研究[D];上海大学;2018年
9 单锋;格子Boltzmann方法在高强度聚焦超声建模中的应用研究[D];南京大学;2017年
10 李凯;可压缩格子Boltzmann方法研究[D];西北工业大学;2016年
中国硕士学位论文全文数据库 前10条
1 Medhanie Kahsay Debesay;[D];长春理工大学;2011年
2 梁力;基于格子Boltzmann的页岩气微尺度流动机理研究[D];西南石油大学;2018年
3 罗诉舟;基于格子Boltzmann理论的多孔介质内酸岩非均相流动反应研究[D];西南石油大学;2018年
4 高云龙;几类非线性偏微分方程的格子Boltzmann模型研究[D];北方民族大学;2019年
5 汪祥;介电液体电热对流的介观格子-Boltzmann模拟[D];哈尔滨工业大学;2018年
6 王元凯;基于格子Boltzmann方法的流动与多孔介质换热研究[D];郑州大学;2018年
7 雷娟霞;一类非线性偏微分方程的格子Boltzmann方法及其数值模拟[D];北方民族大学;2018年
8 范兴欢;基于格子Boltzmann方法的柔性管道内声传播数值模拟研究[D];大连理工大学;2018年
9 吴齐峰;基于OpenFOAM的格子Boltzmann通量求解器研究[D];南京航空航天大学;2018年
10 吕姝辰;微通道内气体混相驱替的格子Boltzmann模拟[D];大连理工大学;2018年
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978