The basic working principle of the energy dispersive X-ray spectrometer (EDXRF) is to irradiate the sample with the primary scattered X-ray generated by the scattered X-ray tube, and the generated characteristic scattered X-ray (fluorescence) directly enters the SI (LI) detection Can be used for qualitative and theoretical analysis. It is possible to identify which elements are contained in the tested sample by detecting the characteristic X-rays of the elements and identifying their energy (the characteristic X-rays of each element have specific energy); and the intensity of the X-ray intensity with a certain energy is It is directly related to the element content of the fluorescent X-rays that can emit this energy in the tested sample. Measure the intensity of these spectral lines and perform corresponding data processing and calculations to obtain the various elements in the tested sample. content. Therefore, X-ray tube and detector are indispensable for energy dispersive X-ray spectrum analyzer. Taking HeLeeX E8 (universal type) as an example, the common configuration of energy dispersive X-ray spectrum analyzer is introduced.
E8 energy dispersive X-ray spectrum analyzer
Instrument hardware configuration
1. Detector
Type: Si-PIN detector (using original imported high-performance electric refrigeration semiconductor detector)
Be window thickness: 1mil
Crystal area: 25mm2
Best resolution: 149eV
Signal processing system DP5
2. X-ray tube
Voltage: 0 ~ 50kV
Maximum current: 2.0mA
Maximum power: 50W
Target material: Mo
Be window thickness: 0.5mm
Service life: more than 20,000 hours
3. High voltage power supply
Output voltage: 0 ~ 50kV
Filament current: 0 ~ 2mA
Maximum power: 50W
Ripple coefficient: 0.1% (pp value)
8-hour stability: 0.05%
4. Camera
Micro focal length
Drive-free
500 million pixels
5. Collimator and filter
Quick disassembly of collimator and filter system
Various material collimators
Spot size Φ0.7mm, Φ1.2mm, Φ3.0mm, Φ5.0mm
Various filter and collimator combinations, software automatically switches
6. Other accessories
Imported high-performance switching power supply
Imported low-noise, high-volume fan
Instrument peripheral configuration
1. Standard samples
One piece of imported ERM-EC681K
One piece of imported ERM-EC680K
Exquisite sterling silver correction film-film
A beautiful sample box
Two sample cups
2. Computer
Screen size: 18.5 inches
CPU model: AMD Athlon II X2 220
CPU frequency: 2800MHz
Memory capacity: 2GB DDR3 1066MHz
Hard disk capacity: 320GB 7200 rpm, SATA2
3. Printer
Color inkjet printer
The highest resolution: 4800x1200dpi
4. Other
One roll of special film for testing
2 pairs of gloves
Software configuration
Software name: HeLeeX ED Workstation V3.0.
Response directives: RoHS testing (Pb, Cd, Hg, Cr, Br), halogen-free testing (Br, Cl)
Open analysis model. A variety of data algorithms, according to different matrix samples, equipped with different algorithms to improve the accuracy of instrument testing.
One-click data backup and one-key restore to increase data security.
The operation interface is simple and easy to use.
Software help function.
software interface
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