Optical zeeman spectroscopy of the (0, 0) A 2Π-X 2Σ+ band system of magnesium hydride

Ruohan Zhang, Timothy Steimle

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The Zeeman effect on lines in the (0, 0) A 2Π-X 2Σ+ 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 2Π (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 gL, of the A 2Π and X 2Σ+ states are 2.002 and 1.000, respectively, and gl is-0.0023 for the X 2Σ+.

Original languageEnglish (US)
Article number51 (7pp)
JournalAstrophysical Journal
Volume781
Issue number1
DOIs
StatePublished - 2014

Fingerprint

Zeeman effect
sunspots
sunspot
molecular beams
hydrides
magnesium
field strength
spectroscopy
tuning
orbitals
high resolution
electronics
effect
cold
parameter

Keywords

  • methods: laboratory: molecular
  • molecular data
  • stars: magnetic field
  • Sun: magnetic fields

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Optical zeeman spectroscopy of the (0, 0) A 2Π-X 2Σ+ band system of magnesium hydride. / Zhang, Ruohan; Steimle, Timothy.

In: Astrophysical Journal, Vol. 781, No. 1, 51 (7pp), 2014.

Research output: Contribution to journalArticle

@article{dea13273df314cbaa30a7c9febf634a2,
title = "Optical zeeman spectroscopy of the (0, 0) A 2Π-X 2Σ+ band system of magnesium hydride",
abstract = "The Zeeman effect on lines in the (0, 0) A 2Π-X 2Σ+ 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 2Π (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 gL, of the A 2Π and X 2Σ+ states are 2.002 and 1.000, respectively, and gl is-0.0023 for the X 2Σ+.",
keywords = "methods: laboratory: molecular, molecular data, stars: magnetic field, Sun: magnetic fields",
author = "Ruohan Zhang and Timothy Steimle",
year = "2014",
doi = "10.1088/0004-637X/781/1/51",
language = "English (US)",
volume = "781",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Optical zeeman spectroscopy of the (0, 0) A 2Π-X 2Σ+ band system of magnesium hydride

AU - Zhang, Ruohan

AU - Steimle, Timothy

PY - 2014

Y1 - 2014

N2 - The Zeeman effect on lines in the (0, 0) A 2Π-X 2Σ+ 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 2Π (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 gL, of the A 2Π and X 2Σ+ states are 2.002 and 1.000, respectively, and gl is-0.0023 for the X 2Σ+.

AB - The Zeeman effect on lines in the (0, 0) A 2Π-X 2Σ+ 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 2Π (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 gL, of the A 2Π and X 2Σ+ states are 2.002 and 1.000, respectively, and gl is-0.0023 for the X 2Σ+.

KW - methods: laboratory: molecular

KW - molecular data

KW - stars: magnetic field

KW - Sun: magnetic fields

UR - http://www.scopus.com/inward/record.url?scp=84891931638&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891931638&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/781/1/51

DO - 10.1088/0004-637X/781/1/51

M3 - Article

AN - SCOPUS:84891931638

VL - 781

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 51 (7pp)

ER -