High Performance Monochromatic X-Ray Source
The X-ray monochromator FOCUS 500/600 operates according to Bragg´s Law of X-ray diffraction. A single wavelength of X-rays is reflected from a quartz single crystal mirror at a specific angle of reflection. High X-ray energy dispersion is achieved utilizing the mirror with a 500 mm Rowland circle diameter for FOCUS 500, and 600 mm diameter for FOCUS 600 model, respectively. Hence, the port length for FOCUS 500 is 177 mm, while for FOCUS 600 model is 254 mm. The large surface area of the quartz crystals leads to an intense X-ray flux from the monochromator for high efficiency XPS measurements. A moveable aluminized polymer window (shutter) is provided on the monochromator housing for differential pumping or to shield the crystal assembly during sputtering.
The FOCUS 500/600 monchromator is equipped with the dual anode, high performance X-ray source XR 50 M which is specially designed for the use with the monochromator. The twin anode (Al/Ag) allows a changeover from a monochromatic Al Kα to Ag Kα excitation energy with only minor adjustments and without breaking the vacuum. Thus, the FOCUS 500/600 monochromator togeher with the XR 50 M X-ray source is perfectly suited for high resolution and high intensity XPS measurements.
The monochromator can be also used to perform Bremsstrahlung Isochromat Spectroscopy (BIS) with a retrofittable attachment to the standard equipment.
- Dual anode high performance X-ray monochromator
- AI Kα and Ag Lα radiation
- High resolution XPS measurements
- Wide crystal area for highest transmission
- Rowland circle with 500 mm
- Focused and non-focused operation modes
400 W for Al, 600 W for Ag
|Maximum Anode Voltage|
CCX 70 Isolation Unit
Closed-Cycle Water Cooling
Yes (Al Kα and Ag Lα radiation)
|Anode Materials Available|
max. chamber port length for FOCUS 500: 177 mm
max. chamber port length for FOCUS 600: 254 mm
|Rowland Cirlce Diameter|
500 mm for FOCUS 500
600 mm for FOCUS 600
2.3 × 1011 photons/s (Al 400 W, FOCUS 500)
1.6 × 1011 photons/s (Al 400 W, FOCUS 600)
Replacement connection bellow for rotary feedthrough mechanism of pitch and roll for FOCUS 500 or 600
Main flange gasket for FOCUS 500 or 600 top flange. Can also be used for Delta 0.5
Special sample visualize X-Ray light. Not recommended to be used with sputter sources.
Replacement Mylar window for all FOCUS500 or 600 monochromators with serialnumber till SN 074-10.04
Replacement Mylar window for all FOCUS500 or 600 monochromators with serialnumber starting from SN 075-10.04
Replacement spring for FOCUS 500 or 600 mirror mechanism
Standard anode for XR50 M monochromized sources
Special anode for XR50 M monochromized source with Al and Al coating
Cathode for XR-50 M monochromized XR source