+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Influence of non-local thermodynamic equilibrium and Zeeman effects on magnetic equilibrium reconstruction using spectral motional Stark effect diagnostic



Influence of non-local thermodynamic equilibrium and Zeeman effects on magnetic equilibrium reconstruction using spectral motional Stark effect diagnostic



Review of Scientific Instruments 88(8): 083509



The Motional Stark Effect (MSE) diagnostic is a well established technique to infer the local internal magnetic field in fusion plasmas. In this paper, the existing forward model which describes the MSE data is extended by the Zeeman effect, fine-structure, and relativistic corrections in the interpretation of the MSE spectra for different experimental conditions at the tokamak ASDEX Upgrade. The contribution of the non-Local Thermodynamic Equilibrium (non-LTE) populations among the magnetic sub-levels and the Zeeman effect on the derived plasma parameters is different. The obtained pitch angle is changed by 3°…4° and by 0.5°…1° including the non-LTE and the Zeeman effects into the standard statistical MSE model. The total correction is about 4°. Moreover, the variation of the magnetic field strength is significantly changed by 2.2% due to the Zeeman effect only. While the data on the derived pitch angle still could not be tested against the other diagnostics, the results from an equilibrium reconstruction solver confirm the obtained values for magnetic field strength.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 059858450

Download citation: RISBibTeXText

PMID: 28863658

DOI: 10.1063/1.4994889


Related references

Overview of equilibrium reconstruction on DIII-D using new measurements from an expanded motional Stark effect diagnostic. Review of Scientific Instruments 79(10): 10f518, 2008

Note: spectral motional Stark effect diagnostic for measurement of magnetic fields below 0.3 T. Review of Scientific Instruments 84(8): 086104, 2013

Measurements of the internal magnetic field using the B-Stark motional Stark effect diagnostic on DIII-D (inivited). Review of Scientific Instruments 81(10): 10d729, 2010

Improved spectral analysis for the motional Stark effect diagnostic. Review of Scientific Instruments 83(10): 10d513, 2012

Note: Multi-point measurement of |B| in the gas-dynamic trap with a spectral motional Stark effect diagnostic. Review of Scientific Instruments 82(8): 086105, 2011

Using motional Stark splitting of D α emission to constrain MHD equilibrium analysis in DIII-D plasmas. Review of Scientific Instruments 89(10): 10d111, 2018

Non-local thermodynamic equilibrium limb radiance from O3 and CO2 in the 911 m spectral region. Journal of Quantitative Spectroscopy and Radiative Transfer 52(3-4): 389-407, 1994

Measurements with magnetic field in the National Spherical Torus Experiment using the motional Stark effect with laser induced fluorescence diagnostic. Review of Scientific Instruments 84(4): 043110, 2013

Real-time data processing and magnetic field pitch angle estimation of the JET motional Stark effect diagnostic based on Kalman filtering. Review of Scientific Instruments 80(6): 063504, 2009

Equilibrium reconstruction based on core magnetic measurement and its applications on equilibrium transition in Joint-TEXT tokamak. Review of Scientific Instruments 85(10): 103501, 2014

Non-equilibrium thermodynamic separation theory of nonlinear chromatograph I. Local Lagrangian approach for nonlinear equilibrium-dispersive processes. Se Pu 25(5): 664-680, 2007

Kinetic behavior of associating enzyme systems ofthe type M in equilibrium M2 in equilibrium M3 in equilibrium ... and of the type 2M in equilibrium D in equilibrium D2 in equilibrium D3 in equilibrium ... Molecular Biology 8(4): 419-426, 1975

Spatial heterodyne Stokes vector imaging of the motional Stark-Zeeman multiplet. Review of Scientific Instruments 83(10): 10d510, 2012

Effect of excitation-autoionization in non-local thermodynamic equilibrium plasmas. Chinese Physics 9(7): 519-522, 2000

The MAST motional Stark effect diagnostic. Review of Scientific Instruments 81(10): 10d738, 2010