- 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
- Integrated radiation shielding
- Adjustable take-off angle
- No external cooling water requirement
- Operated remotely from any computer
|Target material1||Ga or In rich metal alloy||Min. focal spot size||~ 5 μm|
|Target type||Liquid jet||Emission stability3||< 1%|
|Voltage||21-70 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 70 kV high-voltage-generator is 300 W.
3) Standard deviation.
4) Without a shutter (24.8 mm with shutter).
5) Without a shutter (10.5° with shutter).
70 kV Performance Examples
|Jet material||Nominal X-ray spot size6 [µm]||E-beam power [W]||Ga Kα (9.2 keV) peak brightness [photons/(s mm2 mrad2)]||Ga Kα (9.2 keV) radiant flux [photons/(s mrad2)]||In Kα (24 keV) peak brightness [photons/(s mm2 mrad2)]||In Kα (24 keV) radiant flux [photons/(s mrad2)]|
6) Actual e-beam spot is 40×10 and 80×20 μm line focus respectively, but the apparent X-ray spot is essentially circular.
Installation and operation
The source consists of the head and the pump system with dimensions shown in the drawing. The head has to be mounted essentially straight above the pump system. The coupling is semi-rigid, allowing some movement of the source head.
In addition, the MetalJet D2+ 70 kV consists of two 4U (176 mm height) 19” rack electronics boxes and a floor standing air/water chiller (69×36×62 cm), that can be mounted up to 4m from the head and pump system.
The source can be remotely operated through TCP/IP or directly through the GUI. The GUI can be operated on the source itself if it is equipped with monitor, keyboard and mouse, or on most computer platforms with a TCP/ IP connection to the source.
The source cannot be operated as a standalone unit and must be integrated into a system providing the proper interlock connections.
Mains: AC, single phase, 200-240 V, 16 A, 50/60 Hz.
Ambient: 20-25°C (stable within ± 0.2°C for optimal source stability), max 85% relative humidity.