Open AccessSpectroscopic Characterization of Laser Ablated Germanium Plasma
Author(s) -
Muhammad Ashraf,
Nek M. Shaikh,
Tasneem Zehra,
Ghulam Abbas Kandhro,
Ghulam Murtaza
Publication year - 2021
Publication title -
pakistan journal of analytical and environmental chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.155
H-Index - 3
eISSN - 2221-5255
pISSN - 1996-918X
DOI - 10.21743/pjaec/2021.12.18
Subject(s) - electron density , full width at half maximum , plasma , electron temperature , laser , germanium , plume , wavelength , materials science , atomic physics , plasma parameters , electron , optics , analytical chemistry (journal) , chemistry , physics , silicon , optoelectronics , chromatography , quantum mechanics , thermodynamics
In the present study, the germanium (Ge) sample has been studied by laser induced breakdown spectroscopy which leads to the formation of plasma plume in the air. This research work comprises on pure Ge sample, and it has been studied using laser irradiance 1.831011 watt.cm-2 and Q-Switched Nd:YAG laser pulse (λ ~ 1064 nm wavelength and ~ 5 ns pulse width). The spatially resolved plasma plume parameters are investigated, such as variation of electron temperature Te and electron number density ne as a function of detector position. These parameters show variation in the plasma plume and yield electron temperature Te from 12340 to 7640 ± 1200 K. Whereas electron number density ne varies from 3.61017 to 1.601017 cm-3 with the change in detector position is moving away from plasma plume from 0 to 3 mm. The results show that electron temperature Te and electron number density ne are estimated from the Boltzmann plot method and by using Lorentzian function at spectral line using FWHM full width at half maximum at 265.11 nm (4p5s 3 p2 → 4p 2 3 p2) wavelength of Ge (I) line, respectively.