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: Cr, Z=24

Set 1: K-edge group, unfiltered.

Target Voltages (kV):      11.9776   17.967    23.956    29.945

PEIS Source Model:
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, Cr filter.

Target Voltages (kV):      11.9776  17.967    23.956    29.945
Filter Thickness (micron):  0       16.7      33.5      67.    100.    134.    167.

PEIS Source Model:
table
plot

At Focal Plane:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

ACIS, Backside-Illuminated:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

ACIS, Frontside-Illuminated:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

HRC, CsI MCP + UV shield:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

Set 3: K-edge group, V filter.

Target Voltages (kV):      11.9776   17.967    23.956    29.945
Filter Thickness (micron):  0        22.       43.9      87.8    132.    176.    220.

PEIS Source Model:
table
plot

At Focal Plane:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

ACIS, Backside-Illuminated:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

ACIS, Frontside-Illuminated:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

HRC, CsI MCP + UV shield:
table
plot   line purity -
table
plot (Ka2)
plot (Ka1)
plot (Kb)

Set 4: L-edge group, unfiltered.

Target Voltages (kV):       1.148   1.722   2.296   2.870

PEIS Source Model:
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 5: L-edge group, Cr filter.

Target Voltages (kV):       1.148   1.722   2.296   2.870
Filter Thickness (micron):  0       0.513   1.03    2.05   3.08   4.11   5.13

PEIS Source Model (filtered):
table
plot

At Focal Plane:
table
plot   line purity -
table
plot (Ll)
plot (Leta)
plot (La)
plot (Lb)

ACIS, Backside-Illuminated:
table
plot   line purity -
table
plot (Ll)
plot (Leta)
plot (La)
plot (Lb)

ACIS, Frontside-Illuminated:
table
plot   line purity -
table
plot (Ll)
plot (Leta)
plot (La)
plot (Lb)

HRC, CsI MCP + UV shield:
table
plot   line purity -
table
plot (Ll)
plot (Leta)
plot (La)
plot (Lb)

Editor: Dr. Douglas Swartz System Administrator: Mr. Bob Dean Privacy Policy and Important Notices Accessibility Statement