Models for Stark broadening applied to plasma diagnostics

Calculated Stark broadening parameters of singly ionized beryllium spectral lines have been reported. Three spectral series have been studied within semiclassical perturbation theory. The plasma conditions cover temperatures from 2500 to 50,000 K and perturber densities 1011 cm−3 and 1013 cm−3. The influence of the temperature and the role of the perturbers (electrons, protons and He+ ions) on the Stark width and shift have been discussed. Results could be useful for plasma diagnostics in astrophysics, laboratory, and industrial plasmas.

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Study of Stark broadening of Li i 460 and 497 nm spectral lines with independent plasma diagnostics by Thomson scattering

Plasma Sources Science and Technology ◽

10.1088/1361-6595/aaab11 ◽

2018 ◽

Vol 27 (2) ◽

pp. 025013

Author(s):

Krzysztof Dzierżȩga ◽

Tomasz Piȩta ◽

Witold Zawadzki ◽

Evgeny Stambulchik ◽

Marijana Gavrilović-Božović ◽

...

Keyword(s):

Plasma Diagnostics ◽

Thomson Scattering ◽

Spectral Lines ◽

Stark Broadening

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Hydrogen Line Shapes in Plasmas with Large Magnetic Fields

Atoms ◽

10.3390/atoms8040074 ◽

2020 ◽

Vol 8 (4) ◽

pp. 74

Author(s):

Joël Rosato

Keyword(s):

Plasma Diagnostics ◽

Line Shape ◽

Zeeman Effect ◽

Line Profiles ◽

Stark Broadening ◽

Hydrogen Line ◽

Line Shapes ◽

Code Comparison ◽

Computer Simulation Technique ◽

Quadratic Zeeman Effect

We report on hydrogen line shape calculations in the presence of an external magnetic field, at conditions such that the quadratic Zeeman effect is important. The latter is described through a term proportional to B2 in the Hamiltonian, accounting for atomic diamagnetism. It provides a shift and an asymmetry on Lorentz triplets, and it leads to the occurrence of forbidden components. Motivated by investigations performed at the fifth edition of the Spectral Line Shape in Plasmas (SLSP5) code comparison workshop, we perform new calculations of hydrogen Lyman line profiles. Field values representative of magnetized white dwarf atmosphere conditions are taken. The calculations are done using a computer simulation technique, designed for Stark broadening modeling. A discussion of the results is done in the framework of plasma diagnostics.

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Stark Broadening of Neutral Boron Lines

Atoms ◽

10.3390/atoms7030080 ◽

2019 ◽

Vol 7 (3) ◽

pp. 80

Author(s):

Magdalena Christova ◽

Milan S. Dimitrijević ◽

Sylvie Sahal-Bréchot

Keyword(s):

Temperature Dependence ◽

Classical Theory ◽

Plasma Diagnostics ◽

Spectral Series ◽

Stark Broadening ◽

Impact Approximation

Stark broadening parameters, width and shift, of lines within B I 2s22p–2s2ns spectral series have been calculated. Semi-classical theory in impact approximation has been applied. Temperature dependence of Stark parameters has been studied. The presented results could be applied for plasma diagnostics.

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