摘要： Laser Induced Breakdown Spectroscopic (LIBS) technique was used to detect calcium and silicon in an unknown sample. In this method plasma was generated by Nd∶YAG laser of wavelength 1 064 nm with energy 400 mJ and pulse duration between 5~10 ns. The method was applied for the qualitative as well as quantitative analysis. In the qualitative analysis, the electron number density (Ne) of plasma containing calcium and silicon is determined showing that Ne of neutral particles is equivalent to 1016 (cm-3) whereas for ionized particles it is 1017 (cm-3). Plasma temperature is measured using Boltzmann plot method which must be greater than 10 000 k. Intensity ratio method is used for the quantitative analysis shows various elements in abundance with calcium and silicon in majority.
Abstract：Laser Induced Breakdown Spectroscopic (LIBS) technique was used to detect calcium and silicon in an unknown sample. In this method plasma was generated by Nd∶YAG laser of wavelength 1 064 nm with energy 400 mJ and pulse duration between 5~10 ns. The method was applied for the qualitative as well as quantitative analysis. In the qualitative analysis, the electron number density (Ne) of plasma containing calcium and silicon is determined showing that Ne of neutral particles is equivalent to 1016 (cm-3) whereas for ionized particles it is 1017 (cm-3). Plasma temperature is measured using Boltzmann plot method which must be greater than 10 000 k. Intensity ratio method is used for the quantitative analysis shows various elements in abundance with calcium and silicon in majority.
作者简介: Prof. Dr Uzma Ghazanfar, Dean Basic Sciences University of Wah, Pakistan e-mail:
uzigh@yahoo.com
引用本文:
Uzma G, M. Junaid, Khalid Alamgir, T Samina. Measurement of Plasma Parameters of Calcium and Silicon in a Rock Sample Using Laser Induced Breakdown Spectroscopy[J]. 光谱学与光谱分析, 2017, 37(10): 3266-3269.
Uzma G, M. Junaid, Khalid Alamgir, T Samina. Measurement of Plasma Parameters of Calcium and Silicon in a Rock Sample Using Laser Induced Breakdown Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(10): 3266-3269.
[1] Maya L Najarian，Rosemarie C Chinni. A Physical Chemistry Experiment J. Chem. Educ., 2013，90(2)：244.
[2] Xu S, Duan W, Ning R, et al. J. Appl. Spectrosc., 2017, 84(1): 35.
[3] Gondal M A, Dastageer A, Maslehuddin M, et al. Opt. Laser. Technol., 2012, 44: 566.
[4] Aragón C，Aguilera J A. Spectrochim. Acta B, 2010, 65: 395.
[5] Bhatti K A, Rahman M K, Rafique M S, et al. Vacuum.，2010，84：980.
[6] Hamidreza Shirvani-Mahdavi, Parisa Shafiee. Measurement Science and Technology, 2016, 27(12): 125502.
[7] Diego M Díaz Pace, Graciela Bertuccelli, Cristian A D’Angelo. Journal of Physics: Conference Series, 2011，274(1).
[8] Arnab Sarkar，Manjeet Singh. Plasma Science and Technology，2017，19(2): 060101.
[9] http://physics.nist.gov/PhysRefData/Handbook/element_name.htm.
[10] Zhao Xiaoxia，Luo Wenfeng，He Junfang, et al. Proceedings of the SPIE, 2016, 10152:101520D.
[11] Bengoechea J, Aragón C，Aguilera J A. Spectrochimica Acta Part B，2005，60：897.
[12] Shaltout A A, Mostafa N Y, Abdel-Aal M S, et al. Eur. Phys. J. Appl. Phys., 2010, 50: 11003.
