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FOCUS 500/600

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.

KEY FEATURES

  • 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

MADE FOR THESE METHODS

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SPECIFICATIONS

FOCUS 500/600
Operation
Power

400 W for Al, 600 W for Ag

Maximum Anode Voltage

15 kV

Dual Anode

Yes

Working Conditions

UHV

Required Accessories

CCX 70 Isolation Unit

Closed-Cycle Water Cooling

Optional Accessories

Differential pumping

BIS attachment

Monochromated

Yes (Al Kα and Ag Lα radiation)

Mounting
Anode Materials Available

Al, Ag

Power Supply

UXC 1000

Mounting Flange

DN100 CF

Insertion Depth

n. a.

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

Performance
Cross Talk

n. a.

Spot Size

0.25 x 3.5 mm2 in focusing mode

1 x 3.5 mm2 in non-focusing mode

Photon Flux

2.3 × 1011 photons/s (Al 400 W, FOCUS 500) 

1.6 × 1011 photons/s (Al 400 W, FOCUS 600)

RELATED PRODUCTS

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APPLICATION NOTES

SPARE PARTS

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Product image
Product description
Article No.
 
Comvat-diaphragm bellows for Focus 500/600

Replacement connection bellow for rotary feedthrough mechanism of pitch and roll for FOCUS 500 or 600

2074300535
Copper gasket DN250CF

Main flange gasket for FOCUS 500 or 600 top flange. Can also be used for Delta 0.5

2060002976
Fluorescent Sample Plate 6 mm x 12 mm

Special sample visualize X-Ray light. Not recommended to be used with sputter sources.

2060000721
Mylar window for FOCUS 500/600 (for SN 074-10.04 and lower)

Replacement Mylar window for all FOCUS500 or 600 monochromators with serialnumber till SN 074-10.04

2055004357
Mylar window for FOCUS 500/600 (for SN 075-10.04 and higher)

Replacement Mylar window for all FOCUS500 or 600 monochromators with serialnumber starting from SN 075-10.04

2055012084
Pull spring for FOCUS 500/ 600

Replacement spring for FOCUS 500 or 600 mirror mechanism

2074200222
Al/Ag-Anode for XR 50 M

Standard anode for XR50 M monochromized sources

2011902040
AL/AL Anode for XR 50 M

Special anode for XR50 M monochromized source with Al and Al coating

2011902050
Cathode for XR-50 M (FOCUS 500)

Cathode for XR-50 M monochromized XR source

2055014887

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