On the Stark Broadening Regularities Along a Homologous Sequence of the IV B Subgroup in the Periodic System

Djeniže, S.; Labat, J.; Konjević, R.

doi:10.1002/ctpp.2150320203

Cited by 1 publication

(2 citation statements)

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“…Theoretical calculations of the profile, widths and shifts, of several spectral lines of Pb(II) have been carried out by other authors. 14–18 Lakićević 14 estimated the Stark half-widths for the 1681.7 Å resonant line of Pb(II) from systematic trends of Stark parameters versus inverse value of the lower level ionization potential. Semi-empirical values for the 5545.7 and 5610.4 Å lines wavelengths using the Coulomb approximation were also presented in this work.…”

Section: Introductionmentioning

confidence: 99%

“…Djeniže et al. 15 calculated Stark HWHM values for 5042.5 Å, 5608.8 Å, and 6790.8 Å for 10 17 cm −3 electron density and given electron temperature of 5000–40 000 K. Semi-empirical calculations of Stark widths for 43 lines of Pb(II) arising from ns 2 S 1/2 , np 2 P 1/2,3/2 , 2 D 3/2,5/2 , and 5f 2 F 5/2,7/2 levels of Pb(II) were performed in works by Colón and Alonso-Medina 16,17 where Stark widths were presented as functions of temperature for an electron density of 10 17 cm −3 . Recently, Blagojevic and Konjevic 18 performed semi-empirical calculations of Stark widths and shifts for the 4386.4 Å for 10 17 cm −3 and given electron temperature of 11 300–27 000 K.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of Laser-Induced Plasma: Stark Broadening Parameters of Pb(II) 2203.5 and 4386.5 Å Spectral Lines

Alonso‐Medina

2019

Appl Spectrosc

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In this work, the Stark broadening parameters (widths and shifts) of the 2203.5 Á and 4386.5 Á Pb(II) spectral lines have been investigated and measured in laser-induced breakdown spectroscopy (LIBS), using a lead sample (99.999% purity). A Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser operating at its fundamental wavelength ( 1 O 640 Á), generating pulses of 290 mJ, 7 ns of duration, and a repeat frequency of 20 Hz, has been used far the ablation of said lead sample in vacuum and in a controlled argon atmosphere. A study to understand the expansion dynamics of the lead produced plasma was performed. The spectra have been obtained and measured at different time delays of the plasma evolution in the range of 0.15-9 µs, at which the temperature and electron number density are in the ranges of 28 200-8000 K and 1.3 x 10 1 7 to 3 x 10 15 cm-3 , respectively. A graphical representation of the evolution of temperature and electron number density versus 0.3 to 6.5 µs delay from the laser pulse is presented. The important effect of the different environment where the plasma expands has been pointed out. Local thermodynamic equilibrium conditions have been checked. The obtained results of the Stark widths and shifts at the different temperatures and densities of electrons have been compared with the limited data available in the literature. This study aims to obtain more accurate values far these parameters and also to establish regularities and similarities far said parameters. 3,

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Section: Introductionmentioning

confidence: 99%