XRCF Source Spectral Analysis

XRCF Source Spectral Analysis


June 17, '99 Final Version
Automated analysis results of HSI-grating data sets.
  • HRMA, Grating, HSI calibration files are from CALDB-Cal area,
    specific file names are given in the source code.
  • The HSI data are corrected for the HSI QE depression and
    "tile plots" are made to show this effect.
  • MARX-compatible modeled source-spectra files are available
  • The source model is via dd's kludgy IDL routines: xss_sim.pro.
  • ( Jan.2 '98 version of these analyses is still available for comparison here .)


Al Anode

The Al anode produces Al K-alpha, "satellite lines", Al-K beta as well as contaminating C and O lines.

NameEnergyWavelength Relative Intensity
Al K-a1.486708.339611.0000
Al K-a sat1.49598.28830.125
Al K-b1.557457.960770.017
continuum Alx21.1-1.67.7-11.20.076

Be Anode

The Be anode produces a big broad Be K-alpha line, and probably contaminating C and O lines.

NameEnergyWavelength Relative Intensity
Be K-a0.108501.0000

C Anode

The C anode produces a big broad C K-alpha line, and probably contaminating O line.

NameEnergyWavelength Relative Intensity
C K-a0.27741.0000

Cu Anode


Fe Anode


Mg Anode

The Mg anode produces Mg K-alpha, "satellite lines", Mg-K beta as well as contaminating C and O lines.

NameEnergyWavelength Relative Intensity (all detectors)
Mg K-a1.25361.0000
Mg K-a sat 11.26180.086
Mg K-a sat 21.26320.062
Mg K-b1.30220.01 ?
continuum ...?

Mo Anode

The Mo anode produces Mo L-alpha, beta, Mo M line, as well as contaminating C and O lines. The HEG-HSI spectrum below suggests an E/dE of ~300 for the L lines. Two weak lines (2.45 keV and 1.98 keV) are seen also.

NameEnergyWavelength Relative Intensity (all detectors)
Mo L-a2.29325.40661.0
Mo L-b2.39485.17730.444
Mo ?2.455.060.086
Mo ? Ir M?1.986.260.052
continuum2.0-2.54.96-6.20.116/0.1 keV

O Anode (SiO)

The SiO anode, run at ~1.7 keV, produces the O-K line, continuum, and possibly contaminating C line. The LEG-HSI spectrum and HEG-HSI spectrum show identical line shape that is well modeled by two broad, E/dE = ~120, lines: one at 0.5249 keV and one at 0.991*0.5249 keV with relative intensity 1.0:0.3 . By "O-K" line we mean this whole/combined line profile.

NameEnergyWavelength Relative Intensity
O-K0.524923.621.0
local continuum~0.5 0.266 / 0.1 keV
continuum w/CrLx20.46-0.560.25

Ti Anode

The Ti anode, run at high voltage, produces Ti K-alpha, Ti-K beta, Ti-L lines continuum and contaminating C and O lines. Used with a TiKx2 filter the continuum may be hard to separate from the K-a K-b lines in FPC spectra.

NameEnergyWavelength RI@ SourceRI@ BND-FPC
Ti K-a4.510842.74861.00001.0000
Ti K-b4.931812.51400.1810.169
Continuum w/filter4.-4.92.5-3.3~0.2~0.2

Source Stability

See /data/letg1/bnd_rate/phase_one.html for stability plots for the Source-BND .