Solar Physics

, Volume 291, Issue 8, pp 2243–2252 | Cite as

Spectropolarimetry of Atomic and Molecular Lines near 4135 nm

  • Matthew James Penn
  • Han Uitenbroek
  • Alan Clark
  • Roy Coulter
  • Phil Goode
  • Wenda Cao
Article

Abstract

New spatially scanned spectropolarimetry sunspot observations are made of photospheric atomic and molecular absorption lines near 4135 nm. The relative splittings among several atomic lines are measured and shown to agree with values calculated with configuration interaction and intermediate coupling. Large splitting is seen in a line identified with Fe i at 4137 nm, showing multiple Stokes V components and an unusual linear polarization. This line will be a sensitive probe of quiet-Sun magnetic fields, with a magnetic sensitivity of 2.5 times higher than that of the well-known 1565 nm Fe i line.

Keywords

Solar magnetic fields Solar atmosphere Detectors 

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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Matthew James Penn
    • 1
  • Han Uitenbroek
    • 2
  • Alan Clark
    • 3
  • Roy Coulter
    • 4
  • Phil Goode
    • 4
  • Wenda Cao
    • 4
  1. 1.National Solar ObservatoryTucsonUSA
  2. 2.National Solar ObservatorySunspotUSA
  3. 3.Dept. of Physics and AstronomyUniversity of CalgaryCalgaryCanada
  4. 4.Big Bear Solar ObservatoryBig BearUSA

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