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@ARTICLE{Dickheuer:864066,
author = {Dickheuer, Sven and Marchuk, Oleksandr and Tsankov, Tsanko
Vaskov and Luggenhölscher, Dirk and Czarnetzki, Uwe and
Gromelski, Wojciech and Ertmer, Stephan and Kreter, Arkadi},
title = {{M}easurement of the {M}agnetic {F}ield in a {L}inear
{M}agnetized {P}lasma by {T}unable {D}iode {L}aser
{A}bsorption {S}pectroscopy},
journal = {Atoms},
volume = {7},
number = {2},
issn = {2218-2004},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2019-03975},
pages = {48 -},
year = {2019},
abstract = {Tunable diode laser absorption spectroscopy (TDLAS) is a
commonly used technique to measure the temperature and
density of atoms or molecules in a gas. In this work, we
demonstrate that the TDLAS diagnostics could be effectively
applied to measure the magnetic field in a low-density
weakly magnetized plasma using the Zeeman splitting of the
absorption spectrum of lines from noble gases. The laser
wavelength is tailored to fit the 1s5→2p6 transition of
atomic Ar with the wavelength λ=763.51nm . Two mechanisms
of line broadening and splitting are observed: Doppler
broadening and Zeeman effect. The latter is especially
pronounced by applying polarization-selective observation of
the absorption to the TDLAS measurements. By fitting the σ
and π components of the absorption spectrum, the
line-integrated magnetic field on the order of 30–50 mT is
determined. The agreement between the measured values and
the vacuum field (neglecting the impact of the plasma)
calculations on the axis of the PSI-2 is found to be about
$15–20\%$},
cin = {IEK-4},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000474935800010},
doi = {10.3390/atoms7020048},
url = {https://juser.fz-juelich.de/record/864066},
}