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   Your location > Components > Spectroscopy > Hemispherical Spectrometers > PHOIBOS HV Series

Hemispherical Energy Analyzer - PHOIBOS HV Series

PHOIBOS HV
   

Features:

  • For Energies up to 7 keV and 15 keV
  • Modular Detector Concept with 1D, 2D, and Combined 2D / Spin Detectors
  • Highest Transmission with Ultimate Energy and Angular Resolution
New dimension in XPS
X-ray photoelectron spectroscopy (XPS) is a powerful technique to investigate the chemical composition and the electronic structure of a large variety of materials, ranging from metals, semiconductors, insulators and superconductors to carbon-based materials, such as organic semiconductors. The information depth of XPS is determined by the inelastic mean free path (IMFP) of the photoexcited electrons in solid matter. The figure below shows a qualitative plot of the IMFP as a function of the kinetic energy. There is a distinct minimum in the IMFP in the energy range between 40 eV and 100 eV.
   
IMFP Inelastic mean free path (IMFP) of electrons as a function of the kinetic energy. The figure shows a typical plot for IMFPs in inorganic solids
   
To gain access to bulk and interface properties, the kinetic energy of electrons has to be increased by using higher photon energies for excitation. In hard X-ray photoelectron spectroscopy (HAXPES) photon energies typically range between 6 keV and 15 keV, which extends the information
depth to 100200 .

Excellent Performance and Reliability
The PHOIBOS series of hemispherical analyzers combines excellent performance and highest reliability for the widest possible variety of experimental conditions. The analyzers share the same electron-optical design but scale in size with hemispheres of 100 mm, 150 mm, and 225 mm radius. Here, the larger hemisphere radius results in a larger resolving power. All analyzers feature a double magnetic shielding to reduce magnetic field to very low levels.

PHOIBOS 225 HV
The PHOIBOS 225 HV is the state-of-the-art hemispherical analyzer with a mean radius of 225 mm. This instrument can handle energies up to 15 keV via its AVC 15000 power supply. The entrance slits range from 0.09 30 mm2 to 7 30 mm2.

PHOIBOS 150 HV
The PHOIBOS 150 HV has a mean radius of 150 mm and a working distance of 40 mm. The entrance slits have a length of 20 mm. The HSA 7000 plus power supply enables operation up to 7 keV.

 



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PHOIBOS HV Series Family Brochure
PHOIBOS HV

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