OPTICAL ZEEMAN SPECTROSCOPY OF THE (0,0) A 2Π-X 2Σ+ BAND SYSTEM OF MAGNESIUM HYDRIDE

被引：7
作者：
Zhang, Ruohan [1 ]
Steimle, Timothy C. [1 ]
机构：
[1] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA
来源：
ASTROPHYSICAL JOURNAL | 2014年 / 781卷 / 01期
基金：
美国国家科学基金会;
关键词：
methods: laboratory: molecular; molecular data; stars: magnetic field; Sun: magnetic fields; STELLAR MAGNETIC-FIELDS; THEORETICAL SPECTRAL PATTERNS; 2ND SOLAR SPECTRUM; X 2 SIGMA(+); SCATTERING POLARIZATION; MOLECULAR BANDS; MGH; DIAGNOSTICS; HANLE; TRANSITIONS;
D O I：
10.1088/0004-637X/781/1/51
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Zeeman effect on lines in the (0, 0) A (2)Pi-X (2)Sigma(+) band system of a cold molecular beam sample of magnesium hydride, MgH, has been recorded at high resolution (FWHM congruent to 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 (2)Pi (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(S) and g(L), of the A (2)Pi and X (2)Sigma(+) states are 2.002 and 1.000, respectively, and g(l) is -0.0023 for the X (2)Sigma(+).
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页数：7
相关论文
共 47 条
[1]  
Afram N, 2006, ASTR SOC P, V358, P375
[2]   The zeeman effect in the MgH bands [J].
Almy, GM ;
Crawford, FH .
PHYSICAL REVIEW, 1929, 34 (12) :1517-1529
[3]   The molecular Zeeman effect and diagnostics of solar and stellar magnetic fields - III. Theoretical spectral patterns in the Paschen-Back regime [J].
Berdyugina, SV ;
Braun, PA ;
Fluri, DM ;
Solanki, SK .
ASTRONOMY & ASTROPHYSICS, 2005, 444 (03) :947-960
[4]   Molecular line scattering and magnetic field effects: Resolution of an enigma [J].
Berdyugina, SV ;
Stenflo, JO ;
Gandorfer, A .
ASTRONOMY & ASTROPHYSICS, 2002, 388 (03) :1062-1078
[5]   The molecular Zeeman effect and diagnostics of solar and stellar magnetic fields - I. Theoretical spectral patterns in the Zeeman regime [J].
Berdyugina, SV ;
Solanki, SK .
ASTRONOMY & ASTROPHYSICS, 2002, 385 (02) :701-715
[6]   Evidence for the Hanle effect in molecular lines [J].
Berdyugina, SV ;
Fluri, DM .
ASTRONOMY & ASTROPHYSICS, 2004, 417 (02) :775-784
[7]   The molecular Zeeman effect and diagnostics of solar and stellar magnetic fields - II. Synthetic Stokes profiles in the Zeeman regime [J].
Berdyugina, SV ;
Solanki, SK ;
Frutiger, C .
ASTRONOMY & ASTROPHYSICS, 2003, 412 (02) :513-527
[8]  
Berdyugina SV, 2002, ASTRON NACHR, V323, P192, DOI 10.1002/1521-3994(200208)323:3/4<192::AID-ASNA192>3.0.CO
[9]  
2-U
[10]  
Berdyugina SV, 2000, ASTRON ASTROPHYS, V364, pL101
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