Preliminary comparison of monolithic and aperture optics for XRMF Page: 6 of 8
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Havrilla & Worley
Preliminary Comparison of Monolithic and Aperture Optics for XRMF
close lid, 4) observe count rate, 5) open lid, 6) move capillary by hand, 7) repeat steps 2 through
6 until count rate is maximized. Without live feedback of the count rate, the process becomes
quite tedious. Small movements in the x and y positions of the capillary done by hand are also a
Figure 4. Comparison of spectra from an aluminum alloy for the monolithic
capillary (dashed line ---) and 300 micron aperture (solid line- ) in
hindrance in achieving the proper alignment. This is another mechanical engineering aspect,
which must be addressed for optimal performance. However, these alignment difficulties do not
preclude the use of a monolithic capillary within the Omicron.
Figure 5 shows the potential for increased sensitivity in quantitative analysis. The
Figure 5. Spectrum of 50 microliter dried spot of a 10 ng/mL standard
excited by the monolithic capillary.
Advances in X-ray Analysis
, Al, Si
Cr Fe Ni
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Havrilla, G.J. & Worley, C.G. Preliminary comparison of monolithic and aperture optics for XRMF, article, August 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc685505/m1/6/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.