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 +}.
- OSTI ID:
- 22348152
- Journal Information:
- Astrophysical Journal, Vol. 781, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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