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The Astro-E2 XRS/EBIT Microcalorimeter XC-ray Spectrometer

Description: The X-ray Spectrometer (XRS) instrument is a revolutionary non-dispersive spectrometer that will form the basis for the Astro-E2 observatory to be launched in 2005. We have recently installed a flight spare XRS microcalorimeter spectrometer at the EBIT-I and SuperEBIT facility at LLNL replacing the XRS from the earlier Astro-E mission and providing twice the resolving power. The XRS microcalorimeter is an x-ray detector that senses the heat deposited by the incident photon. It achieves a high e… more
Date: April 16, 2004
Creator: Porter, F S; Brown, G V; Boyce, K R; Kelley, R L; Kilbourne, C A; Beiersdorfer, P et al.
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Partner: UNT Libraries Government Documents Department
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Laboratory measurements of the x-ray line emission from neon-like Fe XVII

Description: The authors have conducted a systematic study of the dominant x-ray line emission from Fe XVII. These studies include relative line intensities in the optically thin limit, intensities in the presence of radiation from satellite lines from lower charge states of iron, and the absolute excitation cross sections of some of the strongest lines. These measurements were conducted at the Lawrence Livermore National Laboratory electron beam ion trap facility using crystal spectrometers and a NASA-Godd… more
Date: April 28, 2006
Creator: Brown, G V; Beiersdorfer, P; Chen, H; Scofield, J; Boyce, K R; Kelley, R L et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

New Insights into the X-Ray Spectra of Heliumlike and Neonlike Ions

Description: Recent measurements of the K-shell and L-shell x-ray spectra of highly charged helium-like and neon-like ions are presented that were performed on the Livermore electron beam ion traps and the Princeton tokamaks. These measurements provide new insights into collisional and indirect line formation processes, identifications of forbidden lines, and a new plasma line diagnostic of magnetic field strength.
Date: April 11, 2002
Creator: Beiersdorfer, P.; Chen, H.; Hey, D.; May, M.; Osterheld, A.; Reed, K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electron Impact Excitation Cross Section Measurement for n=3 to n=2 Line Emission in Fe17+ to Fe23+

Description: We have measured the electron impact excitation cross sections for the strong iron L-shell 3 {yields} 2 lines of Fe XVIII to Fe XXIV at the EBIT-I electron beam ion trap using a crystal spectrometer and NASA-Goddard Space Flight Centers 6 x 6 pixel array microcalorimeter. The cross sections were determined by direct normalization to the well established cross section of radiative electron capture through a sophisticated model analysis which results in the excitation cross section for the strong… more
Date: April 20, 2006
Creator: Chen, H; Beiersdorfer, P; Brown, G V; Scofield, J; Gu, M F; Kahn, S M et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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