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   Your location > Components > Spectroscopy > Hemispherical Spectrometers > PHOIBOS SAL

PHOIBOS 150 SAL

State-of-the-Art Electron Analyzer with Scanned Angle Lens for 2D Angular Mapping

 PHOIBOS 150 SAL
 
Features
• In-lens Scan Unit for Polar Angle Scans
• 30° Full Acceptance Angle in Tilt and Polar Direction
• Parallel Detection of up to 1000 Tilt Angle Slices
• Energy Resolution < 2meV
• Angular Resolution < 0.1°

Product Information

Triggered by the growing demand for twodimensional angular resolved photoemission
(ARPES) studies SPECS has developed a scanned angle lens (SAL) for the state-of-the-art PHOIBOS electron analyzer series. The SAL off ers 2D angular mapping with 30° full acceptance angle cone without the need for physical tilting of the sample. Despite extended functionality the new lens does not negatively aff ect the well-proven
lens modes of the PHOIBOS. In combination with high end light sources, like small spot UV sources, Lasers or Synchrotron beamlines, the PHOIBOS 150 SAL offers excellent energy (<2meV) and angle resolution (<0.1°) in a compact design for
all ARPES (with a 2D-CCD or 2D-DLD detector) or Spin/ARPES (with the patented 2D-CCD/3D Spin detector) applications.

The performance of the new lens has been tested using a special device: a Ag sample mounted 30mm below a precisely hole-patterned Mo foil. Excited by a SPECS EQ 22/35 electron source electrons from the Ag sample can only be transmitted into the analyzer lens through the holes. Thus a well-defi ned angle distribution of the electrons is produced allowing to probe the angle resolution in dependence of the electron energy.
The complete map has been acquired for kinetic energies ranging from 35 eV to 40 eV and for 250 sequential polar angels between -14.5° and 14.5° by using the defl ection unit of the lens system. The tilt direction was resolved by the direct angular mapping in the angle resolving direction. The scanned angle lens mode is fully supported by SpecsLab Prodigy.

    

Demonstration of the PHOIBOS 150 SAL 2D angular resolution in dependence of the electron kinetic energy.

 

3D intensity plot of the photoemission spectra at the Γ-point in the (kx,ky,E) space.



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PHOIBOS 150 SAL
Product Brochure
PHOIBOS 150 SAL Brochure


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