期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2019
卷号：19
期号：8
页码：127-134
出版社：International Journal of Computer Science and Network Security
摘要：This paper presents a study of plasma emission from Lithium Fluoride surface produced by Q-switch Laser (Nd: YAG Laser) having 1064 nm wavelength. The sample has been targeted with Q-switch laser pulses at atmospheric pressure in air. Only neutral Lithium (Li) is confirmed in the emission spectrum of Lithium Fluoride plasma. The Boltzmann distribution technique was used to calculate Electron Temperature(T_e). Similarly, Stark Broadening Profile (SBP) technique was used to calculate the Electron Number Density(N_e). T_e is estimated at variable distances along the propagation of plasma plume from the sample surface. Beside that we studied the changing of N_e as a function of distance along the propagation of plasma plume from the surface of the sample. We have also calculated the Inverse Bremsstrahlung (IB) absorption co-efficient and its variation along the distance. It is observed that the T_e, N_e and IB absorption co-efficient decreases as distance increases. In addition, self-absorption of radiation also decreases as temperature decreases.
关键词：Electron number density; Electron temperature; Inverse Bremsstrahlung Co-efficient; Laser Ablation; Lithium Fluoride
