Electron density diagnostics in the 10-100 A interval for a solar flare

Abstract

view Abstract Citations (27) References (47) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Electron Density Diagnostics in the 10--100 Angstrom Interval for a Solar Flare Brown, W. A. ; Bruner, M. E. ; Acton, L. W. ; Mason, H. E. Abstract Electron density measurements from spectral-line diagnostics are reported for a solar flare on July 13, 1982, 1627 UT. The spectrogram, covering the 10-95 A interval, contained usable lines of helium-like ions C V, N VI, O VII, and Ne IX which are formed over the temperature interval 0.7-3.5 x 10 to the 6th K. In addition, spectral-line ratios of Si IX, Fe XIV, and Ca XV were compared with new theoretical estimates of their electron density sensitivity to obtain additional electron density diagnostics. An electron density of 3 x 10 to the 10th/cu cm was obtained. The comparison of these results from helium-like and other ions gives confidence in the utility of these tools for solar coronal analysis and will lead to a fuller understanding of the phenomena observed in this flare. Publication: The Astrophysical Journal Pub Date: February 1986 DOI: 10.1086/163961 Bibcode: 1986ApJ...301..981B Keywords: Electron Density (Concentration); Solar Corona; Solar Flares; Solar X-Rays; Beryllium; Electron Transitions; Helium; Iron; Isoelectronic Sequence; Resonance Lines; X Ray Spectra; Solar Physics; SUN: CORONA; SUN: FLARES; SUN: X-RAYS full text sources ADS |