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MetalJet D2+ 160 kV

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 and power than any other available microfocus x-ray source on the market. And it does so 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.


Features and Benefits

  • Extreme microfocus source power

  • Optional shutter

  • Superior spot quality

  • Optional dual-port mode

  • Minimal maintenance

  • User variable size and aspect ratio of spot

  • LaB6 long-life cathode

  • Very stable x-ray emission and spot position

  • User-friendly Graphical User Interface

  • Controlled through GUI or TCP/IP protocol

  • Adjustable take-off angle

  • No external cooling water requirement

  • Operated remotely from any computer




Technical Specifications


Target material1

Gallium alloy


Min. focal spot size

~ 5 μm

Target type

Liquid jet


Emission stability3

< 1%


50-160 kV


Position stability3

< 1 μm


0-250 W


Min. focus-object distance4

18 mm

Max current

4.3 mA


Beam angle


1) Room temperature liquid gallium alloys 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.

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



Performance Examples (@ 70 kV)


Spot size1
[µm, FWHM]

E-beam power

Ga-Kα peak brightness







 1) Actual e-beam spot has a 1:4 aspect-ratio line focus, but the projected spot dimension is essentially circular. True round focal spots for, e.g., large-angle imaging can typically generate ¼ power compared to the numbers above.




Data Sheets


thumb MetalJet D2 160 kV 2016 08 24 1 

Download the pdf here for more information