Silicon X-ray line emission from solar flares and active regions

Details Silicon X-ray line emission from solar flares and active regions Silicon X-ray line emission from solar flares and active regions

Nov 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978soph...60..123p&link_type=abstract

Solar Physics, vol. 60, Nov. 1978, p. 123-136.

Physics

15

Emission Spectra, Silicon, Solar Activity, Solar Flares, Solar X-Rays, X Ray Spectra, Line Spectra, Oso-8, Solar Spectra

Scientific paper

New observations of solar flare and active region X-ray spectra obtained with the Columbia University instrument on OSO-8 are presented and discussed. The high sensitivity of the graphite crystal panel has allowed both line and continuum spectra to be served with moderate spectral resolution. Observations with higher spectral resolution have been made with a panel of pentaerythritol crystals. Twenty-nine lines between 1.5 and 7.0 A have been resolved and identified, including several dielectronic recombination satellite lines to Si XIV and Si XIII lines which have been observed for the first time. It has been found that thermal continuum models specified by single values of temperature and emission measure have fitted the data adequately, there being good agreement with the values of these parameters derived from line intensity ratios.

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