AXAF Project Science: EIPS Catalog

There is a programming error in the calculations of "line purity". The error affects any targets with more than one line; the more lines the worse the error. The plots and tables for "line purity" from the online catalog should not be used until corrections have been made.

• The tables (ASCII) and plots (GIF) of spectra are arranged in sets of voltages that are multiples of the K or L edge energies.
• Plots of unfiltered spectra are available where the spectra from all voltages are overlapped (plot1) or appear on separate plots (plot2). The plots of filtered spectra are overlapped.
• Line purity results give the line fraction (number of counts in the line to that in the 0.1 - 10.0 keV band) and the detected photon energy dispersion.

Target: Si, Z=14

Set 1: K-edge group, unfiltered.

Target Voltages (kV):       3.680    5.520    7.360    9.200

PEIS Source Model (filtered):
table
plot1
plot2

At Focal Plane:
table
plot1
plot2
ACIS, Backside-Illuminated:
table
plot1
plot2
ACIS, Frontside-Illuminated:
table
plot1
plot2
HRC, CsI MCP + UV shield:
table
plot1
plot2

Set 2: K-edge group, Si filter.

Target Voltages (kV):       3.680    5.520    7.360    9.200
Filter Thickness (micron):  0        12.2    24.5     48.9    73.4    97.8    122.

PEIS Source Model:
table
plot

At Focal Plane:
table
plot
ACIS, Backside-Illuminated:
table
plot   line purity -  K
table
plot
ACIS, Frontside-Illuminated:
table
plot   line purity -  K
table
plot
HRC, CsI MCP + UV shield:
table
plot   line purity -  K
table
plot

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