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用於 XRF/EDS 的 FastSDD X 射線探測器
Patented C-Series Low Energy X-Ray Windows 型號:“C-Series” X-ray windowsAmptek 在推出第一款熱電致冷探測器的同時也推出了一種液氮的替代物。 現在,通過專利“C 系列”, Amptek為常規 XRF 分析提供了一種替代鈹(Be)視窗的產品,與軟 X 射線分析的聚合物視窗相比,它具有更高的性能。
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Amptek 專利「C 系列」X 射線視窗通過採用氮化矽(Si3N4)和鋁塗層,將矽漂移探測器(SDD)的低能量響應擴展到了硼(B); 它們只被用在我們的FastSDD®上。
Amptek 在推出第一款熱電致冷探測器的同時也推出了一種液氮的替代物。 現在,通過專利“C 系列”, Amptek為常規 XRF 分析提供了一種替代鈹(Be)視窗的產品,與軟 X 射線分析的聚合物視窗相比,它具有更高的性能。
應用- C1 視窗:實驗室、桌上型和掌上型儀器。 此視窗不透光,因此可以在普通的室內光線下使用。
- C2 視窗:真空應用和掃描電子顯微鏡(SEM)中的 EDS(EDX)。 C2 視窗在最低能量下效率更高,但是會透光,因此必須在黑暗環境中使用。
Amptek 低能量專利“C 系列”X 射線視窗
NICER X 射線定時儀器上的 Amptek FAST SDD®,其中 C2 視窗在安裝遮光罩之前安裝在焦平面上。
鳴謝: NASA/Keith Gendreau -
C1
C2
厚度(Si3N4)
150 nm
40 nm
鋁塗層(接地)
250 nm
30 nm
視窗直徑
6.3 mm
5 mm
窗口面積
30 mm²
20 mm²
網格類型
六角形矽,15 μm 厚
開口面積網格
80%
80%
氦氣洩漏率
<1 x 10-10 mbar l/s
切勿將 C2 視窗放到 He 氣體中!
工作溫度
-55°C 至 +150°C(0 bar壓差)
-40°C 至 +85°C(1 bar前方壓差)
C1 和 C2 視窗壓力測試:
1.6 bar前方壓差,時長 10 秒
10 個 1 秒週期,1.6 bar前方差壓
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Amptek Patented “C-Series” X-ray windows utilize silicon nitride (Si3N4) with an aluminum coating to extend the low energy response of our silicon drift detectors (SDDs) down to boron (B); they are available exclusively with our FastSDD®.
Amptek provided an alternative to liquid nitrogen when it introduced the first thermoelectrically cooled detector. Now with the Patented “C-Series,” we offer an alternative to the Beryllium (Be) window for general XRF analysis, and superior performance as compared to polymer windows for soft X-ray analysis.
Applications- C1 Windows: Laboratory, benchtop and handheld instruments. This window is light-tight so it can be used in normal ambient room light.
- C2 Windows: Vacuum applications and EDS (EDX) in scanning electron microscopes (SEMs). The C2 window has much better efficiency at the lowest energies but is not light-tight and therefore must be used in dark environments.
Amptek low energy Patented “C-Series” X-ray windows
A view of the NICER X-ray Timing Instrument showing Amptek FAST SDDs® with C2 windows mounted the focal plane, before light shield assembly.
Credits: NASA/Keith Gendreau -
C1 C2 Thickness (Si3N4) 150 nm 40 nm Aluminum Coating (Grounded) 250 nm 30 nm Window Diameter 6.3 mm 5 mm Window Area 30 mm² 20 mm² Grid Type Hexagonal Si, 15 µm thick Open Area Grid 80% 80% Helium Leak Rate <1 x 10-10 mbar l/s Do not put the C2 window into He purge ! Operating Temperature -55°C to +150°C (0 bar pressure differential) -40°C to +85°C (1 bar front pressure differential) Pressure Testing for C1 and C2 Windows: 1.6 bar front pressure differential for 10 seconds 10 cycles of 1 second duration with 1.6 bar front differential pressure