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PHOIBOS 225 2D-CMOS with 3D(2D) Spin VLEED Detector

Ultra High Resolution Hemispherical Energy Analyzer with 2D CMOS Detector for XPS, ARPES, ISS and LEISS and VLEED Detector for Spin Measurements with 225 mm Mean Radius

Hemispherical Energy Analyzer with spin detector.

The PHOIBOS 225 hemispherical energy analyzer is ultra high resolution analysis solution for photoelectron spectroscopy. This analyzer can be operated in all relevant analysis modes, such as ARPES, XPS, UPS, as well as AES, ISS and LEISS. Its design and the modular supplementary hardware makes this analyzer the most versatile PES analyzer in the market.

The patented design of the detector section allows measurements of all three spin components and subsequent 2D ARPES merasurements. The 2D detector is a full scale 2D CMOS detector un undiminished performance in standard PES. The spin channel consist of a 90° deflector to acess the ut of plan spin component and a special rotator lens to swich between the two in plance components of the spin. 

The actual spin detector is the FOCUS Ferrum detector, where an freshly prepared iron oxide film is the spin selective scattering target. With the VLEED detector each spin channel is measured separately with a high efficiency after switching integarted magentic coils for spin selecton. The preparation of the scatering target is fully automated.

The energy analyzer sectionis equipped with 8 customizable entrance and 3 exit slits. For highest energy resolution the entrance slit can be chosen down to 50 µm, providing achievable energy resolution better than 1 meV. The analyzer comes with a highly stable power supply, the HSA 3500 plus, for best performance in a wide kinetic energy range.

A classical CCD camera detection system is available on request.


  • High Performance Analyzer for XPS, ARPES, AES, ISS and LEIS
  • Energy resolution better than 1 meV
  • Angular Resolution better than 0.1°
  • Double µ-Metal Shielding
  • Highly Sensitive Spin Detector
  • Exchange Scattering Scheme
  • Full Scale 2D Detector
  • Spin Rotator and 90° Deflector




PHOIBOS 225 2D-CMOS with 3D(2D) Spin VLEED Detector
Kinetic Energy Range

0-3500 eV in PES
0-1500 eV in SpinPES

Pass Energies

0-550 eV Continously Adjustable
0-200 eV in Spin Detector Channel

Energy Dispersion


Lens Modes

Transmission Mode, Angular Resolved Mode, Magnification (Lateral Resolved) Mode

Measurement Modes

Snapshot Mode, Sweeping Mode, Fixed Energy Mode


2D CMOS Detector
3D Spin VLEED Detector


8 entrance and 3 exit slits and iris aperture

Energy Window

9% of Pass Energy


HSA 3500 +

Working Pressure

10-11 to 10-7 mbar

Energy Resolution

< 1 meV in UPS
< 10  meV in Spin Channel

Angular Resolution

< 0.1° in ARPES Mode
< 0.15° in Spin Mode



Acceptance Angle

±15°, ±7°, ±4° and ±3° in ARPES Mode

Lateral Resolution

< 35 µm

Smallest Acceptance Spot

100 µm

XPS Count Rates UHV

> 0.5 Mcps @ 0.85 eV and > 1.5 Mcps @ 1.00 eV FWHM

Detector Channels

1285 x 730 (with Channel Binning)

Sherman Function /FoM

Sherman Function: 0.28

Working Distance

53.3 mm

Mounting Flange

DN150CF (8" OD)

Magnetic Shielding

Double µ-Metal Shielding

Electric Isolation

> 15 keV


Product image
Product description
Article No.
Channelplates Set - 1 pair MCP 40

Spare channelplate set for all 40 mm CCD detectors

Phosphor screen

Spare phosphor screen for all 40 mm CCD detectors. Exchange with channelplates is recommended.

Cu-wiregasket PHOIBOS 225 DN700COF

PHOIBOS 225 analyzer main flange gasket. Please report SN before ordering

Rotary feedthrough for IRIS

Replacement feedthrough for PHOIBOS Release R5 & R6 iris mechanism

Spindle with Spur and Bevel Gear for Iris

Replacement spindle for PHOIBOS Release R5 & R6 iris mechanism

Tubus 3 with Iris

Replacement iris mechanism for PHOIBOS Release R5 & R6



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