Wavelength Dispersive X-Ray Fluorescence Spectrometer (WDXRF Spectrometer)

X-Ray Fluorescence spectrometers (XRF) use high energy X-rays (or gamma rays) to excite fluorescent radiation or photons from a sample for elemental analysis. In wavelength dispersive x-ray fluorescence spectroscopy (WDXRF), photons emitted by the sample are separated or dispersed by diffraction before hitting the detector. This is accomplished by placing an analyzing crystal between the sample and the detector. Therefore, WDXRF spectrometers have better resolution than energy dispersive x-ray fluorescence spectrometers which do not contain an analyzing crystal. However, due to the increase in optical components, WDXRF spectrometers typical have a lower efficiency than EDXRF spectrometers and, hence, require a higher power x-ray tube (which can add to the cost of the instrument).

There are two types of WDXRF spectrometers: simultaneous and sequential. In simultaneous WDXRF spectrometers, multiple detectors placed at different angles are used to analyze multiple elements simultaneously. In sequential WDXRF Spectrometers, the crystal is turned while elements are analyzed sequentially. Sequential WDXRF spectrometers typically have better intensity, but take longer to record measurements. WDXRF is a nondestructive technique and has applications in many industries where elemental analysis is needed, such as geoscience, environmental analysis, food safety, and analyzing archeological artifacts.

Click here for Energy Dispersive XRF Spectrometers (EDXRF)
CompanyRigaku Americas CorporationRigaku Americas CorporationRigaku Americas CorporationRigaku Americas CorporationRigaku Americas Corporation
ItemSupermini200 High-Powered Benchtop Wavelength Dispersive XRF SpectrometerSimultix 15 Simultaneous WDXRF Spectrometer SystemZSX 400 Wavelength Dispersive X-ray Fluorescence SpectrometerZSX Primus IV Tube-above WDXRF SpectrometerZSX Primus IVi – High Power Sequential WDXRF Spectrometer
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Catalog NumberSupermini200ZSX 400ZSX Primus IVZSX Primus IVi
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PrincipleWavelength DispersiveInquireWavelength Dispersive X-ray Fluorescence (WDXRF)Wavelength Dispersive X-ray Fluorescence (WDXRF)Inquire
X-Ray Tube200 W (air-cooled)End window, Rh-anode, 4kw, 60 kvEnd window, Rh-anode, 3kW or 4 kW, 60kVEnd window Rh-anode, 3kW or 4 kWInquire
Goniometer TypeInquireInquireInquireInquireInquire
Detector(s)Light elements: F-PC (gas flow proportional counter), heavy elements; and SC (scintillation counter)Scintillation counter (SC), Sealed proportioonal counter (S-PC), Flow proportional counter (F-PC)Heavy element detector - Scintillation counter (SC), Light element detector - Flow proportional counter (F-PC), Attenuator - In-out automatic exchanger (1/10)SC Detector (heavy element), F-PC Detector (light element), 1/10 In-out automatic exchanger (Attenuator)Inquire
Analysis Diameter44 mm (sample size)Inquire30 to 0.5 mm0.5, 1, 10, 20, 30 and 35 mmInquire
DescriptionThe new Supermini200 has improved software capabilities as well as a better footprint. As the world's only high-power benchtop sequential wavelength dispersive X-ray fluorescence (WDXRF) spectrometer for elemental analysis of oxygen (O) through uranium (U) of almost any material, the Rigaku ... Read MoreFor over 40 years, the Rigaku Simultix simultaneous wavelength dispersive X-ray fluorescence (WDXRF) spectrometer system has been widely used as an elemental analytical tool for process control in industries that require high throughput and precision, such as steel and cement. Nearly 1,000 Simultix ... Read MoreRigaku's unique ZSX 400 sequential wavelength dispersive X-ray fluorescence (WDXRF) spectrometer was specifically designed to handle very large and/or heavy samples. Accepting samples up to 400 mm diameter, 50 mm thick and 30 kg weight, this system is ideal for analyzing sputtering targets, magnetic... Read MoreAs a tube-above sequential wavelength dispersive X-ray fluorescence spectrometer, the Rigaku ZSX Primus IV delivers rapid quantitative determination of major and minor atomic elements, from beryllium (Be) through uranium (U), in a wide variety of sample types — with minimal standards.

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