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Magnetic field effect on laser-induced breakdown spectroscopy and surface modifications of germanium at various fluences

Published online by Cambridge University Press:  10 February 2017

H. Iftikhar ,
S. Bashir ,
A. Dawood ,
M. Akram ,
A. Hayat ,
K. Mahmood ,
A. Zaheer ,
S. Amin  and
F. Murtaza
H. Iftikhar
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
S. Bashir*
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
A. Dawood
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
M. Akram
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
A. Hayat
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
K. Mahmood
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
A. Zaheer
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
S. Amin
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
F. Murtaza
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan
*
Address correspondence and reprint requests to: S. Bashir, Centre for Advanced Studies in Physics (CASP), Government College University (GCU), Lahore, Pakistan. E-mail: [email protected]
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Abstract

The effect of the transverse magnetic field on laser-induced breakdown spectroscopy and surface modifications of germanium (Ge) has been investigated at various fluences. Ge targets were exposed to Nd: YAG laser pulses (1064 nm, 10 ns, 1 Hz) at different fluences ranging from 3 to 25.6 J/cm2 to generate Ge plasma under argon environment at a pressure of 50 Torr. The magnetic field of strength 0.45 Tesla perpendicular to the direction of plasma expansion was employed by using two permanent magnets. The emission spectra of laser-induced Ge plasma was detected by the laser-induced breakdown spectroscopy system. The electron temperature and number density of Ge plasma are evaluated by using the Boltzmann plot and stark broadening methods, respectively. The variations in emission intensity, electron temperature (Te), and number density (ne) of Germanium plasma are explored at various fluences, with and without employment of the magnetic field. It is observed that the magnetic field is responsible for significant enhancement of both excitation temperature and number density at all fluences. It is revealed that an excitation temperature increases from Te,max,without B = 16,190 to Te,max,with B = 20,123 K. Similarly, the two times enhancement in the electron density is observed from ne,max,without B = 2 × 1018 to ne,max,with B = 4 × 1018 cm−3. The overall enhancement in Ge plasma parameters in the presence of the magnetic field is attributed to the Joule heating effect and adiabatic compression. With increasing fluence both plasma parameters increase and achieve their maxima at a fluence of 12.8 J/cm2 and then decrease. In order to correlate the plasma parameters with surface modification, scanning electron microscope analysis of irradiated Ge was performed. Droplets and cones are formed for both cases. However, the growth of ridges and distinctness of features is more pronounced in case of the absence of the magnetic field; whereas surface structures become more diffusive in the presence of the magnetic field.

Keywords

Laser-induced breakdown spectroscopyElectron temperatureNumber densityMagnetic confinementSurface structuring
Type
Research Article
Information
Laser and Particle Beams , Volume 35 , Issue 1 , March 2017 , pp. 159 - 169
Copyright
Copyright © Cambridge University Press 2017 

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References

REFERENCES

Ahmad, S., Bashir, S., Ali, N., Yousaf, D., Naeem, A., Ahmad, R. & Khaleeq-ur-Rahman, M. (2014). Effect of ion irradiation on the surface, structural and mechanical properties of brass. Nucl. Instrum. Methods B 325, 5.Google Scholar
Arshad, A., Bashir, S., Hayat, A., Akram, M., Khalid, A., Yaseen, N. & Ahmad, Q. S. (2016). Effect of magnetic field on laser-induced breakdown spectroscopy of graphite plasma. Appl. Phys. B 122, 1.Google Scholar
Barmina, E.V., Barberoglu, M., Zorba, V., Simakin, A.V., Strakis, E., Fotakis, K. & Shafeev, G.A. (2009). Surface nanotexturing of tantalum by laser ablation in water. Quant. Electron. 39, 89.Google Scholar
Bashir, S., Farid, N., Mahmood, K. & Rafique, M.S. (2012). Influence of ambient gas and its pressure on the laser-induced breakdown spectroscopy and the surface morphology of laser-ablated Cd. Appl. Phys. A 107, 203.Google Scholar
Behera, N., Singh, R. & Kumar, A. (2015). Confinement and re-expansion of laser induced plasma in transverse magnetic field: Dynamical behaviour and geometrical aspect of expanding plume. Phys. Lett. A 379, 2215.CrossRefGoogle Scholar
Bleiner, D. & Bogaerts, A. (2006). Multiplicity and contiguity of ablation mechanisms in laser-assisted analytical micro-sampling. Spectrochim. Acta B 61, 421.CrossRefGoogle Scholar
Boyd, T.J.M. & Sanderson, J.J. (2003). The Physics of Plasmas. UK: Cambridge Unversity Press.Google Scholar
Burger, M., Pantic, D., Nikolic, Z. & Djenize, S. (2016). Shielding effects in the laser-generated copper plasma under reduced pressures of He atmosphere. J. Quant. Spectrosc. Radiat. Transfer 170, 19.Google Scholar
El-Saeid, R., Abdelhamid, M. & Harith, M. (2016). Laser-induced breakdown spectroscopy on metallic samples at very low temperature in different ambient gas pressures. Spectrochim. Acta B 116, 1.CrossRefGoogle Scholar
Farid, N., Bashir, S. & Mahmood, K. (2011). Effect of ambient gas conditions on laser-induced copper plasma and surface morphology. Phys. Scr. 85, 015702.CrossRefGoogle Scholar
Guo, L., Hu, W., Zhang, B., He, X., Li, C., Zhou, Y., Cai, Z., Zeng, X. & Lu, Y. (2011). Enhancement of optical emission from laser-induced plasmas by combined spatial and magnetic confinement. Opt. Exp. 19, 14067.Google Scholar
Hahn, D. & Lunden, M. (2000). Aerosol science & technology. Aerosol Sci. Technol. 33, 30.Google Scholar
Harilal, S., Bindhu, C., Nampoori, V. & Vallabhan, C. (1998 a). Influence of ambient gas on the temperature and density of laser produced carbon plasma. Appl. Phys. Lett. 72, 167.Google Scholar
Harilal, S., Bindhu, C., Nampoori, V. & Vallabhan, C. (1998 b). Temporal and spatial behavior of electron density and temperature in a laser-produced plasma from YBa2Cu3O7 . Appl. Spectrosc. 52, 449.CrossRefGoogle Scholar
Harilal, S., Tillack, M., O'shay, B., Bindhu, C. & Najmabadi, F. (2004). Confinement and dynamics of laser-produced plasma expanding across a transverse magnetic field. Phys. Rev. E 69, 026413.Google Scholar
Joshi, H., Kumar, A., Singh, R. & Prahlad, V. (2010). Effect of a transverse magnetic field on the plume emission in laser-produced plasma: An atomic analysis. Spectrochim. Acta B 65, 415.Google Scholar
Körner, C., Mayerhofer, R., Hartmann, M. & Bergmann, H. (1996). Physical and material aspects in using visible laser pulses of nanosecond duration for ablation. Appl. Phys. A 63, 123.Google Scholar
Lan, H., Wang, X., Chen, H., Zou, D. & Lu, P. (2015). Influence of a magnetic field on laser-produced Sn plasma. Plasma Sourc. Sci. Technol. 24, 055012.Google Scholar
Ley, H.-H. (2014). Analytical methods in plasma diagnostic by optical emission spectroscopy: A tutorial review. J. Sci. Technol. 6, 49.Google Scholar
Mansour, N., Jamshidi-Ghaleh, K. & Ashkenasi, D. (2006). Formation of conical microstructures of silicon with picosecond laser pulses in air. J. Laser Micro/Nanoeng. 1, 12.Google Scholar
Michel, A.P., Lawrence-Snyder, M., Angel, S.M. & Chave, A.D. (2007). Laser-induced breakdown spectroscopy of bulk aqueous solutions at oceanic pressures: Evaluation of key measurement parameters. Appl. Opt. 46, 2507.CrossRefGoogle ScholarPubMed
Miziolek, A.W., Palleschi, V. & Schechter, I. (2006). Laser Induced Breakdown Spectroscopy. UK: Cambridge University Press.Google Scholar
Neogi, A. & Thareja, R. (1999). Dynamics of laser produced carbon plasma expanding in a nonuniform magnetic field. J. Appl. Phys. 85, 1131.Google Scholar
NIST, National Institute of Standard and Technology (2005). http://physics.nist.gov/ asd.Google Scholar
Pisarczyc, T. & Kasperczuk, A. (1999). Measurement of electron density in plasma disturbed by strong transverse magnetic field. Laser Part. Beams 17, 313.Google Scholar
Radziemski, L.J. & Cremers, D.A. (2006). Handbook of Laser Induced Breakdown Spectroscopy (West Sussex). England: John Wiley & Sons.Google Scholar
Rafique, M.S., Khaleeq-Ur-Rahman, M., Riaz, I., Jalil, R. & Farid, N. (2008). External magnetic field effect on plume images and X-ray emission from a nanosecond laser produced plasma. Laser Part. Beams 26, 217.Google Scholar
Rai, V.N., Jagdish, P.S., Fang, Y.Y. & Robert, L.C. (2003 a). Study of optical emission from laser-produced plasma expanding across an external magnetic field. Laser Part. Beams 21, 65.CrossRefGoogle Scholar
Rai, V.N., Shukla, M. & Pant, H. (1999). An X-ray biplanar photodiode and the X-ray emission from magnetically confined laser produced plasma. Pramana J. Phys. 52, 49.Google Scholar
Rai, V.N., Shukla, M. & Pant, H.C. (1998). Some studies on picosecond laser-produced plasma expanding across uniform external magnetic fields. Laser Part. Beams 16, 431.Google Scholar
Rai, V.N., Zhang, H., Yueh, F.Y., Singh, J.P. & Kumar, A. (2003 b). Effect of steady magnetic field on laser-induced breakdown spectroscopy. Appl. Opt. 42, 3662.Google Scholar
Raju, M.S., Singh, R., Gopinath, P. & Kumar, A. (2014). Influence of magnetic field on laser-produced barium plasmas: Spectral and dynamic behaviour of neutral and ionic species. J. Appl. Phys. 116, 153301.Google Scholar
Roy, A., Harilal, S.S., Hassan, S.M., Endo, A., Mocek, T. & Hassanein, A. (2015). Collimation of laser-produced plasmas using axial magnetic field. Laser Part. Beams 33, 175.Google Scholar
Shaikh, N.M., Hafeez, S. & Baig, M.A. (2007). Comparison of zinc and cadmium plasma parameters produced by laser-ablation. Spectrochim. Acta B 62, 1311.Google Scholar
Shakeel, H., Arshad, S., Haq, S. & Nadeem, A. (2016). Electron temperature and density measurements of laser induced germanium plasma. Phys. Plasmas 23, 053504.Google Scholar
Shen, X., Lu, Y., Gebre, T., Ling, H. & Han, Y. (2006). Optical emission in magnetically confined laser-induced breakdown spectroscopy. J. Appl. Phys. 100, 053303.Google Scholar
Yu, J. & Lu, Y. (1999). Laser-induced ripple structures on Ni–P substrates. Appl. Surf. Sci. 148, 248.Google Scholar