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Influence of cavity and magnetic confinements on the signal enhancement and plasma parameters of laser-induced Mg and Ti plasmas

Published online by Cambridge University Press:  10 February 2020

Emmanuel Asamoah*
School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu212013, China
Ye Xia
School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu212013, China
Yao Hongbing*
College of Science, Hohai University, Nanjing, Jiangsu210098, China
Pengyu Wei
China Ship Scientific Research Center, Wuxi, Jiangsu214082, China
Cong Jiawei
School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu212013, China
Zhu Weihua
College of Science, Hohai University, Nanjing, Jiangsu210098, China
Zhang Lin
College of Science, Hohai University, Nanjing, Jiangsu210098, China
James Kwasi Quaisie
School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu212013, China
Authors for correspondence: Emmanuel Asamoah, School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu212013, China. E-mail:;
Yao Hongbing, College of Science, Hohai University, Nanjing, Jiangsu210098, China. Email:


In this study, we have spectroscopically investigated the plasma generated by a Q-switched Nd:YAG laser operating at its fundamental wavelength of 1064 nm focused on magnesium (Mg) and titanium (Ti) target samples in the air under atmospheric pressure. We employed circular cavities of radii (2.5, 3.0, and 3.5 mm) and a square cavity to investigate the cavity confinement effect on the spectral emission intensities of the plasmas. We observed that the circular cavity of radius 2.5 mm had the maximum signal enhancement, and this can be attributed to the compression of the plasma and reheating by the reflected shock waves. The maximum enhancement factor of the Mg I-518.4 nm line was reached at approximately 3.8, 3.4, and 2.8 with a circular cavity of radius 2.5, 3.0, and 3.5 mm, respectively, at a delay time of 350 ns and a laser energy of 350 mJ. By applying varying external magnetic fields (0.47, 0.62, 0.91, and 1.23 T) across the generated plasma, the plasma parameters such as electron temperature and number density have been investigated. From our results, we observed that the radius of the cavity had a tremendous effect on the enhancement of the emission signal intensities. We also found that the increase in the electron temperature and the number density can be attributed to the increase in the applied magnetic field and the laser energy. From our calculations, the value of β, which was less than 1 for all the cases, confirms that there was a plasma confinement at the presence of the magnetic field.

Research Article
Copyright © The Author(s) 2020. Published by Cambridge University Press

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Aguilera, JA and Aragón, C (2004) Characterization of a laser-induced plasma by spatially resolved spectroscopy of neutral atom and ion emissions: comparison of local and spatially integrated measurements. Spectrochimica Acta Part B: Atomic Spectroscopy 59, 18611876.CrossRefGoogle Scholar
Ahmed, N, Abdullah, M, Ahmed, R, Piracha, NK and Baig, MA (2017) Quantitative analysis of a brass alloy using CF-LIBS and a laser ablation time-of-flight mass spectrometer. Laser Physics 28, 016002.CrossRefGoogle Scholar
Akhtar, M, Jabbar, A, Ahmed, N, Mehmood, S, Umar, Z, Ahmed, R and Baig, M (2019) Magnetic field-induced signal enhancement in laser-produced lead plasma. Laser and Particle Beams 37, 6778.CrossRefGoogle Scholar
Amoruso, S, Bruzzese, R, Spinelli, N and Velotta, R (1999) Characterization of laser-ablation plasmas. Journal of Physics B: Atomic, Molecular and Optical Physics 32, R131.CrossRefGoogle Scholar
Asamoah, E and Hongbing, Y (2017) Influence of laser energy on the electron temperature of a laser-induced Mg plasma. Applied Physics B 123, 22.CrossRefGoogle Scholar
Asimellis, G, Hamilton, S, Giannoudakos, A and Kompitsas, M (2005) Controlled inert gas environment for enhanced chlorine and fluorine detection in the visible and near- infrared by laser-induced breakdown spectroscopy. Spectrochimica Acta Part B: Atomic Spectroscopy 60, 11321139.CrossRefGoogle Scholar
Awan, MA, Ahmed, SH, Aslam, MR, Qazi, IA and Baig, MA (2013) Determination of heavy metals in ambient air particulate matter using laser-induced breakdown spectroscopy. Arabian Journal for Science and Engineering 38, 16551661.CrossRefGoogle Scholar
Bashir, S, Farid, N, Mahmood, K and Rafique, MS (2012) Influence of ambient gas and its pressure on the laser-induced breakdown spectroscopy and the surface morphology of laser-ablated Cd. Applied Physics A 107, 203212.CrossRefGoogle Scholar
Boueri, M, Motto-Ros, V, Lei, W-Q, Zheng, L-J and Zeng, H-P (2011) Identification of polymer materials using laser-induced breakdown spectroscopy combined with artificial neural networks. Applied Spectroscopy 65, 307314.CrossRefGoogle ScholarPubMed
Bridge, CM, Powell, J, Steele, KL and Sigman, ME (2007) Forensic comparative glass analysis by laser-induced breakdown spectroscopy. Spectrochimica Acta Part B: Atomic Spectroscopy 62, 14191425.CrossRefGoogle Scholar
Carmona, N, Oujja, M, Rebollar, E, Römich, H and Castillejo, M (2005) Analysis of corroded glasses by laser induced breakdown spectroscopy. Spectrochimica Acta Part B: Atomic Spectroscopy 60, 11551162.CrossRefGoogle Scholar
Choi, J-J, Choi, S-J and Yoh, JJ (2016) Standoff detection of geological samples of metal, rock, and soil at low pressures using laser-induced breakdown spectroscopy. Applied Spectroscopy 70, 14111419.CrossRefGoogle ScholarPubMed
Corsi, M, Palleschi, V, Salvetti, A and Tognoni, E (2002) Calibration free laser induced plasma spectroscopy: a new method for combustion products analysis. Clean Air 3, 6979.CrossRefGoogle Scholar
Cremers, DA and Radziemski, LJ (1983) Detection of chlorine and fluorine in air by laser-induced breakdown spectrometry. Analytical Chemistry 55, 12521256.CrossRefGoogle Scholar
Dawood, A and Bashir, S (2018) Characterizing laser induced plasma and ablation of Mg-alloy in the presence and absence of magnetic field. Optik 170, 353367.CrossRefGoogle Scholar
Dawood, A, Bashir, S, Chishti, NA, Khan, MA and Hayat, A (2018) Magnetic field effect on plasma parameters and surface modification of laser-irradiated Cu-alloy. Laser and Particle Beams 36, 261275.CrossRefGoogle Scholar
Duixiong, S, Maogen, S, Chenzhong, D and Guanhong, W (2014) A comparative study of the laser induced breakdown spectroscopy in single-and collinear double-pulse laser geometry. Plasma Science and Technology 16, 374.Google Scholar
Gao, X, Liu, L, Song, C and Lin, J (2015) The role of spatial confinement on nanosecond YAG laser-induced Cu plasma. Journal of Physics D: Applied Physics 48, 175205.CrossRefGoogle Scholar
Ghezelbash, M, Majd, AE, Darbani, SMR and Ghasemi, A (2017) Experimental investigation of atomic and ionic titanium lines, diatomic TiOγ transition and continuum background radiation via magnetically confined LIBS. Ceramics International 43, 83568363.CrossRefGoogle Scholar
Giakoumaki, A, Melessanaki, K and Anglos, D (2007) Laser-induced breakdown spectroscopy (LIBS) in archaeological science—applications and prospects. Analytical and Bioanalytical Chemistry 387, 749760.CrossRefGoogle ScholarPubMed
Gomba, J, D'Angelo, C, Bertuccelli, D and Bertuccelli, G (2001) Spectroscopic characterization of laser induced breakdown in aluminium–lithium alloy samples for quantitative determination of traces. Spectrochimica Acta Part B: Atomic Spectroscopy 56, 695705.CrossRefGoogle Scholar
Gottfried, JL, De Lucia, FC Jr, Munson, CA and Miziolek, AW (2008) Strategies for residue explosives detection using laser-induced breakdown spectroscopy. Journal of Analytical Atomic Spectrometry 23, 205216.CrossRefGoogle Scholar
Griem, H (1997) Principles of Plasma Spectroscopy. Cambridge: Cambridge University.CrossRefGoogle Scholar
Guo, L, Hu, W, Zhang, B, He, X, Li, C, Zhou, Y, Cai, Z, Zeng, X and Lu, Y (2011) Enhancement of optical emission from laser-induced plasmas by combined spatial and magnetic confinement. Optics Express 19, 1406714075.CrossRefGoogle ScholarPubMed
Guo, L, Hao, Z, Shen, M, Xiong, W, He, X, Xie, Z, Gao, M, Li, X, Zeng, X and Lu, Y (2013) Accuracy improvement of quantitative analysis by spatial confinement in laser-induced breakdown spectroscopy. Optics Express 21, 1818818195.CrossRefGoogle ScholarPubMed
Harilal, S, Tillack, M, O'shay, B, Bindhu, C and Najmabadi, F (2004) Confinement and dynamics of laser-produced plasma expanding across a transverse magnetic field. Physical Review E 69, 026413.CrossRefGoogle ScholarPubMed
Harmon, RS, DeLucia, FC, McManus, CE, McMillan, NJ, Jenkins, TF, Walsh, ME and Miziolek, A (2006) Laser-induced breakdown spectroscopy: an emerging chemical sensor technology for real-time field-portable, geochemical, mineralogical, and environmental applications. Applied Geochemistry 21, 730747.CrossRefGoogle Scholar
Hongbing, Y, Asamoah, E, Jiawei, C, Dongqing, Y and Fengxiao, Y (2018) Comprehensive study on the electron temperature and electron density of laser-induced Mg plasma. Journal of Lasers, Optics and Photonics 5, 181.Google Scholar
Iftikhar, H, Bashir, S, Dawood, A, Akram, M, Hayat, A, Mahmood, K, Zaheer, A, Amin, S and Murtaza, F (2017) Magnetic field effect on laser-induced breakdown spectroscopy and surface modifications of germanium at various fluences. Laser and Particle Beams 35, 159169.CrossRefGoogle Scholar
Joshi, H, Kumar, A, Singh, R and Prahlad, V (2010) Effect of a transverse magnetic field on the plume emission in laser-produced plasma: an atomic analysis. Spectrochimica Acta Part B: Atomic Spectroscopy 65, 415419.CrossRefGoogle Scholar
Lee, Y, Song, K and Sneddon, J (1997) Laser Induced Plasmas for Analytical Atomic Spectroscopy. New York, NY: Wiley-VCH.Google Scholar
Lei, W, Motto-Ros, V, Boueri, M, Ma, Q, Zhang, D, Zheng, L, Zeng, H and Yu, J (2009) Time-resolved characterization of laser-induced plasma from fresh potatoes. Spectrochimica Acta Part B: Atomic Spectroscopy 64, 891898.CrossRefGoogle Scholar
Li, Y, Tian, D, Ding, Y, Yang, G, Liu, K, Wang, C and Han, X (2018) A review of laser-induced breakdown spectroscopy signal enhancement. Applied Spectroscopy Reviews 53, 135.CrossRefGoogle Scholar
Markiewicz-Keszycka, M, Casado-Gavalda, MP, Cama-Moncunill, X, Cama-Moncunill, R, Dixit, Y, Cullen, PJ and Sullivan, C (2018) Laser-induced breakdown spectroscopy (LIBS) for rapid analysis of ash, potassium and magnesium in gluten free flours. Food Chemistry 244, 324330.CrossRefGoogle ScholarPubMed
Michel, AP, Lawrence-Snyder, M, Angel, SM and Chave, AD (2007) Laser-induced breakdown spectroscopy of bulk aqueous solutions at oceanic pressures: evaluation of key measurement parameters. Applied Optics 46, 25072515.CrossRefGoogle ScholarPubMed
Müller, K and Stege, H (2003) Evaluation of the analytical potential of laser-induced breakdown spectrometry (LIBS) for the analysis of historical glasses. Archaeometry 45, 421433.CrossRefGoogle Scholar
Naes, BE, Umpierrez, S, Ryland, S, Barnett, C and Almirall, JR (2008) A comparison of laser ablation inductively coupled plasma mass spectrometry, micro X-ray fluorescence spectroscopy, and laser induced breakdown spectroscopy for the discrimination of automotive glass. Spectrochimica Acta Part B: Atomic Spectroscopy 63, 11451150.CrossRefGoogle Scholar
Neogi, A and Thareja, R (1999) Laser-produced carbon plasma expanding in vacuum, low pressure ambient gas and nonuniform magnetic field. Physics of Plasmas 6, 365371.CrossRefGoogle Scholar
Popov, AM, Colao, F and Fantoni, R (2009) Enhancement of LIBS signal by spatially confining the laser-induced plasma. Journal of Analytical Atomic Spectrometry 24, 602604.CrossRefGoogle Scholar
Popov, AM, Labutin, TA, Zaytsev, SM, Seliverstova, IV, Zorov, NB, Kal'ko, IA, Sidorina, YN, Bugaev, IA and Nikolaev, YN (2014) Determination of Ag, Cu, Mo and Pb in soils and ores by laser-induced breakdown spectrometry. Journal of Analytical Atomic Spectrometry 29, 19251933.CrossRefGoogle Scholar
Radziemski, LJ and Cremers, DA (1989) Laser-induced Plasmas and Applications. Marcel Dekker Inc, New York.Google Scholar
Rai, V, Shukla, M and Pant, H (1998) Some studies on picosecond laser produced plasma expanding across a uniform external magnetic field. Laser and Particle Beams 16, 431443.CrossRefGoogle Scholar
Rodriguez-Celis, E, Gornushkin, I, Heitmann, U, Almirall, J, Smith, B, Winefordner, J and Omenetto, N (2008) Laser induced breakdown spectroscopy as a tool for discrimination of glass for forensic applications. Analytical and Bioanalytical Chemistry 391, 1961.CrossRefGoogle ScholarPubMed
Sabsabi, M and Cielo, P (1995) Quantitative analysis of aluminum alloys 14058-8 by laser-induced breakdown spectroscopy and plasma characterization. Applied Spectroscopy 49, 499507.CrossRefGoogle Scholar
Shaheen, N, Irfan, NM, Khan, IN, Islam, S, Islam, MS and Ahmed, MK (2016) Presence of heavy metals in fruits and vegetables: health risk implications in Bangladesh. Chemosphere 152, 431438.CrossRefGoogle ScholarPubMed
Shao, J, Wang, T, Guo, J, Chen, A and Jin, M (2017) Effect of cylindrical cavity height on laser-induced breakdown spectroscopy with spatial confinement. Plasma Science and Technology 19, 025506.CrossRefGoogle Scholar
Shen, X, Lu, Y, Gebre, AT, Ling, H and Han, Y (2006) Optical emission in magnetically confined laser-induced breakdown spectroscopy. Journal of Applied Physics 100, 053303.CrossRefGoogle Scholar
Sturm, V and Noll, R (2003) Laser-induced breakdown spectroscopy of gas mixtures of air, CO2, N2, and C3H8 for simultaneous C, H, O, and N measurement. Applied Optics 42, 62216225.CrossRefGoogle ScholarPubMed
Sturm, V, Peter, L and Noll, R (2000) Steel analysis with laser-induced breakdown spectrometry in the vacuum ultraviolet. Applied Spectroscopy 54, 12751278.CrossRefGoogle Scholar
Sun, D, Su, M, Dong, C, Wen, G and Cao, X (2013) A comparative study of the laser induce breakdown spectroscopy in single-and double-pulse laser geometry.CrossRefGoogle Scholar
Sun, Y, Zhong, S, Lu, Y, Sun, X, Ma, J and Liu, Z (2015) Application of LIBS in element analysis of nanometer thin film prepared on silicon basement. Guang pu xue yu guang pu fen xi 35, 13761382.Google ScholarPubMed
Wang, Q, Chen, A, Zhang, D, Wang, Y, Sui, L, Li, S, Jiang, Y and Jin, M (2018) The role of cavity shape on spatially confined laser-induced breakdown spectroscopy. Physics of Plasmas 25, 073301.CrossRefGoogle Scholar
Zhang, H, Yueh, F-Y and Singh, JP (1999) Laser-induced breakdown spectrometry as a multimetal continuous-emission monitor. Applied Optics 38, 14591466.CrossRefGoogle ScholarPubMed
Zhang, S, Wang, X, He, M, Jiang, Y, Zhang, B, Hang, W and Huang, B (2014) Laser-induced plasma temperature. Spectrochimica Acta Part B: Atomic Spectroscopy 97, 1333.CrossRefGoogle Scholar