Stark broadening of low-n hydrogen lines in strongly magnetized hydrogen plasmas: influence of l-degeneracy removal due to the quadratic Zeeman effect

2021 ◽  
pp. 108014
Author(s):  
J. Rosato
Keyword(s):  
Zeeman Effect ◽  
Stark Broadening ◽  
Hydrogen Plasmas ◽  
Hydrogen Lines ◽  
Quadratic Zeeman Effect

scholarly journals Time Ordering Effects on Hydrogen Zeeman-Stark Line Profiles in Low-Density Magnetized Plasmas

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
J. Rosato ◽  
D. Boland ◽  
M. Difallah ◽  
Y. Marandet ◽  
R. Stamm
Keyword(s):  
Stark Effect ◽  
Principal Quantum Number ◽  
Zeeman Effect ◽  
Magnetized Plasmas ◽  
Low Density ◽  
Stark Broadening ◽  
Simulation Code ◽  
Quantum Numbers ◽  
Balmer Lines ◽  
Hydrogen Lines

Stark broadening of hydrogen lines is investigated in low-density magnetized plasmas, at typical conditions of magnetic fusion experiments. The role of time ordering is assessed numerically, by using a simulation code accounting for the evolution of the microscopic electric field generated by the charged particles moving at the vicinity of the atom. The Zeeman effect due to the magnetic field is also retained. Lyman lines with a low principal quantum number n are first investigated, for an application to opacity calculations; next Balmer lines with successively low and high principal quantum numbers are considered for diagnostic purposes. It is shown that neglecting time ordering results in a dramatic underestimation of the Stark effect on the low-n lines. Another conclusion is that time ordering becomes negligible only when ion dynamics effects vanish, as shown in the case of high-n lines.

scholarly journals Hydrogen Line Shapes in Plasmas with Large Magnetic Fields

Atoms ◽  
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.

THE THEORY OF THE QUADRATIC ZEEMAN EFFECT

1970 ◽  
Vol 31 (C4) ◽  
pp. C4-71-C4-74 ◽  
Author(s):  
A. R. EDMONDS
Keyword(s):  
Zeeman Effect ◽  
Quadratic Zeeman Effect

Semiclassical mechanics of the quadratic Zeeman effect

1992 ◽  
Vol 45 (5) ◽  
pp. 3093-3103 ◽  
Author(s):  
Kristin D. Krantzman ◽  
John A. Milligan ◽  
David Farrelly
Keyword(s):  
Zeeman Effect ◽  
Semiclassical Mechanics ◽  
Quadratic Zeeman Effect

The Quadratic Zeeman Effect

1939 ◽  
Vol 55 (1) ◽  
pp. 52-58 ◽  
Author(s):  
F. A. Jenkins ◽  
E. Segrè
Keyword(s):  
Zeeman Effect ◽  
Quadratic Zeeman Effect

Quadratic Zeeman effect and l-mixing in high Rydberg states of Sr

1984 ◽  
Vol 17 (14) ◽  
pp. L475-L479 ◽  
Author(s):  
R Beigang ◽  
W Makat ◽  
E Matthias ◽  
A Timmermann ◽  
P J West
Keyword(s):  
Zeeman Effect ◽  
Rydberg States ◽  
Quadratic Zeeman Effect

Stark Broadening of Hydrogen Lines in a Plasma

1959 ◽  
Vol 116 (1) ◽  
pp. 4-16 ◽  
Author(s):  
Hans R. Griem ◽  
Alan C. Kolb ◽  
K. Y. Shen
Keyword(s):  
Stark Broadening ◽  
Hydrogen Lines

Occurrence of circular polarization in Te 2 fluorescence due to quadratic Zeeman effect

1994 ◽  
Author(s):  
Marcis P. Auzinsh ◽  
I. P. Klincare ◽  
A. V. Stolyarov ◽  
Ya. Tamanis ◽  
R. S. Ferber
Keyword(s):  
Circular Polarization ◽  
Zeeman Effect ◽  
Quadratic Zeeman Effect
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