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Title: Optical Zeeman spectroscopy of the (0, 0) A {sup 2}Π-X {sup 2}Σ{sup +} band system of magnesium hydride

The Zeeman effect on lines in the (0, 0) A {sup 2}Π-X {sup 2}Σ{sup +} band system of a cold molecular beam sample of magnesium hydride, MgH, has been recorded at high resolution (FWHM ≅60 MHz) and analyzed. The lines associated with the lowest rotational levels are detected for the first time. The field-free spectrum was analyzed to produce spectroscopic parameters for the A {sup 2}Π (v = 0) state. The experimentally observed magnetic tuning of the low-rotational spectral features at field strengths comparable to those found in sunspots is accurately modeled by assuming that the electronic spin and orbital magnetic g-factors, g{sub S} and g{sub L} , of the A {sup 2}Π and X {sup 2}Σ{sup +} states are 2.002 and 1.000, respectively, and g {sub l} is –0.0023 for the X {sup 2}Σ{sup +}.
Authors:
;  [1]
  1. Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604 (United States)
Publication Date:
OSTI Identifier:
22348152
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 781; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; LANDE FACTOR; MAGNESIUM HYDRIDES; MAGNETIC FIELDS; MOLECULAR BEAMS; RESOLUTION; SPECTRA; SPECTROSCOPY; SPIN; SUN; SUNSPOTS; ZEEMAN EFFECT