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光谱仪是一种设计用于元素分析的能量色散X射线(EDX)光谱仪。它主要用于分析和定量百万分之一至重量百分比范围内的元素浓度。它是一个实验室兼容模型,配备了坚固的高真空样品室和先进的控制系统。EPMA-1720由旋转阳极X射线管、离子光柱、微通道板探测器、样品更换装置和基于窗口的主机(HPC)组成。旋转阳极X射线管根据使用连接的HPC设置的电压和电流产生X射线。HPC还充当接口,将光谱仪连接到其他外部组件,如氘灯。离子光学柱由一对准直器和缝隙、一个扫描偏转器和一个定义孔径的样品组成。准直器和狭缝组件限制X射线分布进入离子光柱。扫描偏转器在25 kV的样品定义孔径上扫描X射线以确定能量范围。微通道板检测器由MCP组件、信号放大器、变形棱镜和荧光屏组成。信号放大器具有信号相关增益调节和低噪声放大器,噪声水平低至0.7e-rms。变形棱镜将分量能量分开,而荧光屏将令人兴奋的X射线光束的印记转换成可见光图像。SHIMADZU EPMA-1720还配备了变样装置,使系统能够在样品定位级别之间快速切换。这种装置也起到防御X射线污染的屏蔽作用。同时,其基于窗口的HPC监控和存储光谱数据。总体而言,EPMA-1720是一种先进的EDX光谱仪,设计用于对固体和液体样品进行快速、准确和可靠的元素分析。其旋转阳极X射线管和微通道板探测器使系统能够识别ppm至重量百分比范围内的元素。其变样装置保证了无污染条件。
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