STUDY OF THE ZEEMAN SPLIT IN HYDROGEN IN MG MAGNETIC FIELDS
POSTER
Abstract
A Zeeman effect is used for investigation of magnetic fields in astrophysical and laboratory plasmas. Magnetic fields in the atmosphere of magnetic white dwarf stars are in the range of 1 - 100 MG. A quadratic Zeeman effect may contribute to the line split in this range of magnetic fields.
We studied absorption hydrogen Balmer lines in magnetic fields relevant to white dwarf stars. A 1 MA pulse power machine at the University of Nevada, Reno produces magnetic fields up to 4 MG. The magnetic field was generated on the surface of rod loads, 0.8-1 mm in diameter. A droplet of CH oil on the center of the rod load was a source of hydrogen. Oil was irradiated by emission from the surface of the rod with a temperature of 0.5-0.6 eV. Optical spectra of hydrogen were recorded using a spectrometer with two gratings, 1200 l/mm and 2400l/mm and an ICCD sensor. A Zeeman splitting of the H-alpha line was seen at the central wavelength of 656 nm. The value of the Zeeman splitting indicated the magnetic fields of 2-3 MG. These values were in agreement with data from Faraday rotation diagnostics and B-dot sensors. A shift of the central component of the Zeeman triplet will be used for investigation of the quadratic effect.
We studied absorption hydrogen Balmer lines in magnetic fields relevant to white dwarf stars. A 1 MA pulse power machine at the University of Nevada, Reno produces magnetic fields up to 4 MG. The magnetic field was generated on the surface of rod loads, 0.8-1 mm in diameter. A droplet of CH oil on the center of the rod load was a source of hydrogen. Oil was irradiated by emission from the surface of the rod with a temperature of 0.5-0.6 eV. Optical spectra of hydrogen were recorded using a spectrometer with two gratings, 1200 l/mm and 2400l/mm and an ICCD sensor. A Zeeman splitting of the H-alpha line was seen at the central wavelength of 656 nm. The value of the Zeeman splitting indicated the magnetic fields of 2-3 MG. These values were in agreement with data from Faraday rotation diagnostics and B-dot sensors. A shift of the central component of the Zeeman triplet will be used for investigation of the quadratic effect.
Presenters
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Vladimir V Ivanov
University of Nevada, Reno
Authors
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Vladimir V Ivanov
University of Nevada, Reno
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Roberto C Mancini
University of Nevada, Reno
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Kyle J Swanson
University of Nevada, Reno
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Noah A Huerta
University of Nevada, Reno
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Igor E Golovkin
Prism Computational Sciences
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Don E Winget
University of Texas - Austin, University of Texas at Austin
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Michael H Montgomery
University of Texas - Austin, University of Texas at Austin, The University of Texas at Austin