Laboratory Studies of X-Ray Emission from Fe L-Shell Transitions and Their Diagnostic Utility.

Brown, G. V. ; Beiersdorfer, P. ; Chen, H. ; Scofield, J. H. ; Boyce, K. R. ; Kelley, R. L. ; Kilbourne, C. A. ; Porter, F. S. ; Brickhouse, N. S.

Technical Information Center Oak Ridge Tennessee

关键词: X-ray emission;    Laboratory tests;    Cross sections;    Astrophysics;    Diagnostics;   

RP-ID  :  DE200515014492

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Non-terrestrial objects are home to complex, dynamic, intriguing environments. High-resolution x-ray spectra from these sources measured by satellites such as the Chandra x-ray Observatory, XMM-Newton, the Solar Maximum Mission, and the soon-to-be-launched Astro-E2 provide a means for understanding the physics governing these sources. Especially rich is the x-ray emission from L-shell transitions in highly-charged iron ions. This emission is the source of a variety of diagnostics whose utility lies in the accuracy of the atomic data employed to model the x-ray spectra either globally or using ratios of key emission lines. The atomic data used to describe these diagnostics are generally provided by large theoretical calculations and benchmarked by laboratory data. I will discuss the laboratory measurements of Fe L-shell x-ray emission, past, present, and future, how these data are being implemented in spectral modeling packages, and how models are being built using data obtained exclusively in the laboratory.