首页 > 论文 > 光学 精密工程 > 21卷 > 8期(pp:1942-1948)

碳室约束对激光等离子体辐射的增强效应

Enhancement effect of carbon chamber confinement on laser plasma radiation

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
  • PDF全文
分享:

摘要

以土壤样品为靶, 提出利用小型碳室对高能量激光诱导等离子体进行空间限制来提高等离子体发射光谱质量。采用高能量脉冲激光烧蚀土壤样品, 利用组合式多功能光栅光谱仪和CCD探测器等组成的光谱分析系统记录光谱信息, 研究了激光诱导等离子体在有或无碳室约束条件下辐射强度的变化; 通过光谱学测量方法求得电子温度和电子密度, 用以解释等离子体辐射增强的机理。实验结果显示, 当利用小型碳室约束激光等离子体时, 土壤样品元素Mn,K,Fe和Ti的光谱线强度比无碳室约束时分别提高了90.77%, 101.71%, 104.27%和60.77%; 光谱信噪比分别提高了54.29%, 55.30%, 59.37%和38.80%; 等离子体的电子温度和电子密度分别提高了1 684 K和1.8×1016 cm-3。得到的结果表明, 利用空间约束方法能够有效地提高激光诱导等离子体的发射光谱强度和信噪比, 为利用激光诱导击穿光谱技术检测物质中低含量成分奠定了基础。

Abstract

By taking soil samples as targets, a small carbon chamber was used to perform the spatial confinement for high energy laser induced plasma to improve the quality of laser-induced breakdown spectroscopy. A high energy laser was used to ablate the soil samples, a spectral analysis system consisting of a modular multifunctional grating spectrometer and a CCD detector was adopted to record the spectral information, and the changes of the radiation intensities of laser-induced soil plasma with and without the small carbon chamber were studied. Then, the electron temperature and electron density of the plasma were measured by the spectroscopic methods to explain the mechanism of irradiation enhancement of the plasma. Experimental results show when the laser plasma is confined by the small carbon chamber , the spectral line intensities of the sample elements Mn, K, Fe and Ti increase about 90.77%, 101.71%, 104.27% and 60.77% than that without the small carbon chamber, and spectral signal-to-noise ratio raises around 54.29%, 55.30%, 59.37% and 38.80%, while the electron temperature and electron density of the plasma enhance about 1 684 K and 1.8×1016 cm-3, respectively. These results demonstrate that the spectral intensities and signal-to-noise ratio of the laser-induced plasma can be improved effectively by spatial confinement for the high energy laser induced plasma, which is an effective means for detecting the low-content elements in soil samples.

中国激光微信矩阵
补充资料

中图分类号:O433.54

DOI:10.3788/ope.20132108.1942

所属栏目:现代应用光学

基金项目:国家自然科学基金资助项目(No.10804025); 河北省自然科学基金资助项目(No.A2006000951)

收稿日期:2013-02-25

修改稿日期:2013-03-21

网络出版日期:--

作者单位    点击查看

陈金忠:河北大学 物理科学与技术学院, 河北 保定 071002
马瑞玲:河北大学 物理科学与技术学院, 河北 保定 071002
陈振玉:河北大学 物理科学与技术学院, 河北 保定 071002
孙江:河北大学 物理科学与技术学院, 河北 保定 071002
李旭:河北大学 物理科学与技术学院, 河北 保定 071002

联系人作者:马瑞玲(maruiling209512@sina.cn)

备注:马瑞玲(1985-), 女, 山西大同人, 研究生, 2011年于山西忻州师范学院获得学士学位, 主要从事激光等离子体光谱技术方面的研究。

【1】ERMALITSKAIA F E, VOROPAY Y S, ZAJOGIN A P. Dual-pulse laser-induced breakdown spectrometry of bronze alloys and coatings[J]. Journal of Applied Spectroscopy, 2012, 77(2): 153-159.

【2】HEILBRUNNER H N, HUBER H, WOLFMEIR E, et al..Double-pulse laser-induced breakdown spectroscopy for trace element analysis in sintered iron oxide ceramics[J]. Appl. Phys. A, 2012, 106: 15-23.

【3】DUBEY A, BOUKOUVALA F, KEYVAN G, et al.. Improvement of tablet coating uniforming using a quality by design approach[J]. AAPS Pharm. Sci. Tech., 2011, 13(1): 231-246.

【4】PRAMOD S K, NARENDRA S, MANGAL S P, et al.. Laser induced breakdown spectrometry—a multivariate analysis [J].Journal of Global Pharma Technology,2010, 2(1): 133-142.

【5】LEGNAIOLI S, LORENZETTI G, PARDINI L, et al..Laser-induced breakdown spectroscopy application to control of the process of precious metal recovery and recycling [J]. Spectrochemical Acta Part B: Atomic Spectroscopy, 2012, 71-72: 123-126.

【6】ROBERTS D E, PLESSIS A D, STEYN J, et al.. An investigation of laser induced breakdown spectroscopy for use as a control in the laser removal of rock from fossils found at the Malapa Hominin Site, South Africa[J]. Pectrochimica Acta Part B: Atomic Spectroscopy, 2012, 73: 48-54.

【7】TRIPATHI D K, KUMAR R, PATHAK A K, et al.. Laser-induced breakdown spectroscopy and phytolith analysis: an approach to study the deposition and distribution pattern of silicon in different parts of wheat (Triticum aestivum L.) plant [J]. Agricultural Research, 2012,1(4): 352-361.

【8】BRYGO F,ABDELKRIM. Laser-induced breakdown spectroscopy and chemometrics : a novel potential method to analyze wheat grains [J]. Journal of Agricultural and Food Chemistry, 2010, 58(12): 7126-7134.

【9】刘佳, 高勋, 段花花. 激光诱导击穿光谱技术研究的新进展[J]. 激光杂志, 2012, 33(1): 7-10.
LIU J, GAO X, DUAN H H. Latest development of laser induced breakdown spectroscopy [J]. Laser Journal, 2012, 33(1): 7-10.(in Chinese)

【10】KILLINGER D K, ALLEN S D, ROBERT D, et al.. Enhancement of Nd∶YAG LIBS emission of a remote target using a simultaneous CO2 laser pulse[J]. Optics Express, 2007, 15(20): 12905-12915.

【11】AHMED R, BAIG M A. On the optimization for enhanced dual-pulse laser-induced breakdown spectroscopy[J]. IEEE Transactions on Plasma Science, 2010, 38(8): 2052-2055.

【12】CRISTOFORETTI G, LEGNAIOLI S , PALLESCHI V, et al.. Effect of target composition on the emission enhancement observed in double-pulse laser-induced breakdown spectroscopy[J]. Spectrochimica Acta Part B: Atomic Spectroscopy, 2008, 63(2): 312-323.

【13】卞保民, 杨玲, 李振华, 等. 衰减球面冲击波波阵面自模拟运动特性[J]. 物理学报, 2004, 53(3): 840-841.
BIAN B M, YANG L, LI ZH H, et al.. The study of self-simulating properties of spherical shock front attenuation [J]. Acta Physical Sinica, 2004, 53(3): 840-841. (in Chinese)

【14】PANDHIJA S,RAI N K, RAI A K, et al.. Contaminant concentration in environmental samples using LIBS and CF-LIBS [J]. Appl. Phys. B, 2010, 98: 231-241.

【15】SHAIKH N M,RASHID B, HAFEEZ S, et al.. Spectroscopic studies of laser induced aluminum plasma using sundamental, second and third harmonics of a Nd∶YAG laser[J]. The European Physical Journal D, 2007, 44(2): 371-379.

【16】KONDO H.Comparison between the characteristics of the plasmas generated by laser on solid and molten steels[J]. Spectrochemical Acta Part B, 2012,73: 20-25.

【17】National institute of standards and technology physics laboratory (NIST) atomic spectra database[Z/OL]. http: //physics.nist.gov/PhysRefData/ASD/lines_ from html[DB].

【18】AHMED, KHALIL A I. A comparative spectroscopic study of single and dual pulse laser produced UV tin plasmas[J]. Optics & Laser Technology, 2013, 45: 443-452.

【19】GRIEM H R. Plasma Spectroscopy[M]. New York : McGraw-Hill, 1964: 375.

引用该论文

CHEN Jin-zhong,MA Rui-ling,CHEN Zhen-yu,SUN Jiang,LI Xu. Enhancement effect of carbon chamber confinement on laser plasma radiation[J]. Optics and Precision Engineering, 2013, 21(8): 1942-1948

陈金忠,马瑞玲,陈振玉,孙江,李旭. 碳室约束对激光等离子体辐射的增强效应[J]. 光学 精密工程, 2013, 21(8): 1942-1948

被引情况

【1】王瑞荣. 椭圆石英弯晶的积分衍射效率标定. 光学 精密工程, 2017, 25(6): 1472-1476

【2】李 安,王亮伟,郭 帅,刘瑞斌. 激光诱导击穿光谱增强机制及技术研究进展. 中国光学, 2017, 10(5): 619-640

您的浏览器不支持PDF插件,请使用最新的(Chrome/Fire Fox等)浏览器.或者您还可以点击此处下载该论文PDF