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X-ray Fluorescence Spectra at -50 O C
350
Ca
Ti
300
Fe 2 O 3
TiO 2
CaCO 3
SiO 2
Al 2 O 3
MgO
250
Si
200
Al
150
Mg
100
Cr
Fe
50
0
0
1
2
3
4
5
6
7
8
Energy [KeV]
Fig. 3. The results of laboratory experiments are summarized for each specimen in
simple composition. The XRF line spectra of each element are detected and clearly
discriminated each other. A Cr-target X-ray generator is used as excitation source. The
operation temperature of CCD is minus 50 C. In addition to each XRF peak, scattered
Cr peak is observed. For this analysis, only the grade-0 data are used.
Fig. 4. A result of laboratory experiment is shown for powder stimulant in lunar basaltic
composition. A Cr-target X-ray generator is used as excitation source. Grade-0 data is
used for this analysis. Each XRF peak of Mg, Al, Si, K, Ca, Ti, and Fe and scattered
Cr peak are clearly detected and discriminated each other. Not only K- α but K- β peaks
are detected for Si, Ca, Ti, Cr, and Fe, indicating its good energy resolution of the XRS.
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