Inverse Photoelectron Spectroscopy System - IPES
The OmniVac IPES 2000/3000 System is a highly sensitive surface analysis tool for probing the density of unoccupied electronic states between the Fermi and the Vacuum Level, which is not accessible for PES experiments. The IPES System consists of an UV Bandpass Photon Detector with either a solid state Detector (IPES 2000) or a Geiger-Mueller-Tube (IPES 3000), mounted on a DN40CF UHV flange. The Electron Source is fully UHV compatible and mounts on a DN40CF flange. The thermionic emission of electrons is achieved from an indirectly heated cathode. The Electron Beam is characterized by a High Beam Current in the Low Energy Range and a Small Energy Distribution. Electron Beam energy, beam current and spot size are independently adjustable over wide ranges.
IPES 2000/3000 Detector
|
Detector |
Solid State Detector (NaCl) / GM Tube with gas mixing station |
|
Window |
LiF, CaF2, SrF2 |
|
Mounting flange |
DN 40 CF |
|
Data Acquisition |
Preamplifier and Pulse Counter with USB interface |
|
Data Processing |
Software for Signal Counting |
|
Remote Control |
Electron Gun Energy Control |
|
|
|
Kimball, ELG-2 |
GM Tube (IPES 3000) |
ELG-2 Low Energy Electron Gun System
|
Beam Energy |
1 eV - 2 keV |
|
Beam Current |
1 nA to 10 μA |
|
Spot Size |
0.5 mm to 5 mm at 20 mm working distance |
|
Woorking Distance |
Range: 5 mm to 100 mm, 20 mm recommended |
|
Filament |
BaO |
|
Mounting flange |
DN 40 CF |
|
Power Supply |
All necessary voltages to drive the Electron Gun |
|
Computer / Remote Control |
50 pin D sub and RS‐onnectors |
Angle resolved IPES
Ag (polycr.)
