二手 SHIMADZU EPMA-1720 #293586145 待售
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ID: 293586145
Spectrometer
Observation optical system:
Resolution: 1 μm
Field of view: Approx. 600 μm dia
Subject depth: 4 μm
Sample stage system:
Maximum stage drive range: X, Y: 90 mm, Z: 7 mm
Minimum feed distance: X, Y: 0.02 μm, Z: 0.1 μm
Maximum stage drive speed: X, Y: 15 mm/sec Z: 1 mm/sec
Analyze elements range: 4Be to 92U
Number of X-ray spectrometers: 2 to 5 Channels
X-ray take-off angle: 52.5°
Rowland circle radius: 4"
Evacuation system:
Vacuum level analysis chamber: 1.0 x 10^−3 or less
Evacuation pump: Turbo molecular pump, Oil rotary pump
Preliminary evacuation: Oil rotary pump
Vacuum detection: Penning gauge, Pirani gauge
Automated Functions: Automatic evacuation, Automatic baking
Electron optical system:
Electron source: W filament
Secondary-electron image resolution: 6 nm
Accelerating voltage: 0.1 to 30 kV
Beam current: 1 pA to 1 μA
Magnification: 40× to 400,000×
Back-scattered electron detector: 4-Block, Semiconductor detector
Objective aperture: Fixed type
Operating system: Windows 10 Pro.
SHIMADZU EPMA-1720光譜儀是一種設計用於元素分析的能量色散X射線(EDX)光譜儀。它主要用於分析和定量百萬分之一至重量百分比範圍內的元素濃度。它是一個實驗室兼容模型,配備了堅固的高真空樣品室和先進的控制系統。EPMA-1720由旋轉陽極X射線管、離子光柱、微通道板探測器、樣品更換裝置和基於窗口的主機(HPC)組成。旋轉陽極X射線管根據使用連接的HPC設置的電壓和電流產生X射線。HPC還充當接口,將光譜儀連接到其他外部組件,如氘燈。離子光學柱由一對準直器和縫隙、一個掃描偏轉器和一個定義孔徑的樣品組成。準直器和狹縫組件限制X射線分布進入離子光柱。掃描偏轉器在25 kV的樣品定義孔徑上掃描X射線以確定能量範圍。微通道板檢測器由MCP組件、信號放大器、變形棱鏡和熒光屏組成。信號放大器具有信號相關增益調節和低噪聲放大器,噪聲水平低至0.7e-rms。變形棱鏡將分量能量分開,而熒光屏將令人興奮的X射線光束的印記轉換成可見光圖像。SHIMADZU EPMA-1720還配備了變樣裝置,使系統能夠在樣品定位級別之間快速切換。這種裝置也起到防禦X射線汙染的屏蔽作用。同時,其基於窗口的HPC監控和存儲光譜數據。總體而言,EPMA-1720是一種先進的EDX光譜儀,設計用於對固體和液體樣品進行快速、準確和可靠的元素分析。其旋轉陽極X射線管和微通道板探測器使系統能夠識別ppm至重量百分比範圍內的元素。其變樣裝置保證了無汙染條件。
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