Comparison of observed and theoretical Fe L emission from CIE plasmas

[摘要] We analyze data from the Lawrence Livermore National Lab (LLNL) Electron Beam Ion Trap (EBIT) that simulates a CIE plasma by sweeping the electron beam to approximate a Maxwellian velocity distribution. These results are compared to spectra of confirmed astronomical CIE plasmas (e.g. outer regions of x-ray clusters) observed by XMM/RGS. We utilize the Photon Clean Method (PCM) to quantify these spectra (EBIT and XMM/RGS) in the form of ratios of Fe L lines in the emission complex near 1 keV. The variances of line fluxes are measured with bootstrap methods (Efron 1979). Both of these observations are further compared with theoretical predictions of Fe L line fluxes from APED and similar atomic databases.

[发布日期] 2007-11-08 [发布机构] Lawrence Livermore National Laboratory

[关键词] Lawrence Livermore National Laboratory;Spectra;Photons;99 General And Miscellaneous//Mathematics, Computing, And Information Science;Electron Beams