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EDS (SEM) Applications FAST SDD® and C2 Window

Amptek is pleased to offer our improved line of silicon drift detectors (SDDs) for energy dispersive spectroscopy (EDS) use within scanning electron microscopes (SEMs). Using our proprietary Patented “C-Series” silicon nitride (Si3N4) X-ray windows, the low-energy response of our FAST SDD® extends down to beryllium (Be). The FAST SDD® with its high intrinsic efficiency is ideal for EDS, which is also known as energy dispersive X-ray spectroscopy (EDX or XEDS) and energy dispersive X-ray analysis (EDXA) or energy dispersive X-ray microanalysis (EDXMA).

Systems include:

  • FAST SDD® – 225 mm or 270 mm
  • X-123 package with digital pulse processor and all power supplies
  • Vacuum extender – 5 or 9 inches
  • Vacuum flange 

Figure 1. The X-123 FAST SDD® spectrometer with C2 window, vacuum extender, and feedthrough coupling.

Figure 3. Beryllium (Be) and Carbon (C) spectrum with new Fast SDD® detector with C2 Window.

C2 Window Transmission Efficiency

Element C2 Window
Li 29%
Be 13%
B 19.7%
C 43.9%
N 59.2%
O 62%
F 69%
Ne 72.9%
Na 75.1%
Mg 77.3%
Al 80.3%
Si 81.8%

Figure 5. C2 Window vs. polymer window.

Figure 6. FAST SDD® 55Fe Spectrum.

  • Learn more about the FAST SDD®
  • Learn more about our Patented C Series low energy windows
  • FAST SDD®2Available with the 70 mm
Contact us for more information today! 

All results on this page are typical performance values at full cooling; please Contact Us to discuss guaranteed performance under different operating conditions.  Specifications subject to change without notice. The C2 window is NOT He tight. Do not put it in He purge. It will destroy the vacuum and void warranty.