The MetalJet D2+ is the latest version in Excillum’s line of extreme brightness X-ray sources, following the success of the earlier MetalJet D1 and D2. It is similar to a standard X-ray tube, but features Excillum’s unique metal-jet anode technology and advanced electron optics. Within the 5-30 μm spot-size range, it delivers significantly higher brightness than any other available microfocus X-ray source on the market, with an excellent spot quality. This makes it an ideal source for any microfocus application requiring shorter exposure times, higher throughput or better signal to noise. The 160 kV version of the D2+ allows for a higher acceleration voltage and thus a harder X-ray spectrum. The higher X-ray yield at higher energies will benefit anyone interested in the indium emission line at 24 keV or the bremstrahlung above 20 keV.

Technical Specifications

Target material1 Gallium alloy Min. focal spot size ~ 5 μm
Target type Liquid jet Emission stability3 < 1%
Voltage 21-160 kV Position stability3 < 1 μm
Power2 0-250 W Min. focus-object distance4 18 mm
Max current 4.3 mA Beam angle 13°/30°

1) The room temperature liquid metal alloys supplied for the MetalJet source consist mainly of gallium, indium and tin. They have low reactivity and low toxicity but should be handled according to their safety data sheets and local regulations. The currently available anode alloys are ExAlloy-G1 with 95% gallium and ExAlloy-I1 with 21% indium (see typical emission spectra under Characteristics tab).
2) The actual power used is dependent on spot-size and voltage. However, maximum output power of the 160 kV high-voltage-generators is 640 W.
3) Standard deviation
4) Without a shutter (24.8 mm with shutter).
5) Without a shutter (10.5° mm with shutter).


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