Possibility for Coronal Magnetic Field Measurements by EUV and X-ray Spectroscopy

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Possibility for Coronal Magnetic Field
Measurements by EUV and X-ray Spectroscopy
Peter Beiersdorfer
Sophie Canton (Charge exchange) Matt Carpenter
(Algorithms,CX) Jaan Lepson (EUV
spectra) Henry Silva (SMM/Yohkoh data)
Your LDRD Representative Graphic Here (Fit in
thisrectangle, nocaption)
Solar Lunch SSL, 5/19/06
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The extreme ultraviolet is extremely rich in lines
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The solar emission in the 25 170Å region has
similar problems and more
There are few observations in this spectral band
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The data from the 1970's represents the reference
data that are still being used in emission models
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We have been making laboratory measurements to
build a catalogue of the lines in the EUV
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Discovery of an X-ray line diagnostic of the
magnetic field
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Explanation of the magnetic-field sensitivity
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Predicted magnetic-field variation of B/3F in
variousastrophysical ions
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Resolving power to see these lines
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Detection of line B in Fe XVII
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High-resolution detection of line B
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B/3F depends on magnetic field and electron
density
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Can the B line be observed in the Sun?