Detail

UVLS

Versatile and Robust VUV Light Source with Microwave Plasma Generator

The UVLS is a microwave plasma-based UV light source. It is based on a filamentless design and is therefore not subject to the filament ageing of electron impact plasma UV sources. Instead the He plasma is created directly in the quartz output capillary leading to excellent coupling of the generated UV to the chamber or monochromator. This design provides long term plasma stability making the source suitable for use even with heavier gases like Ar and Xe.The source is differentially pumped by an optional available pumping package and is be equipped with dispersing quartz capillary to access medium and large size samples.

KEY FEATURES

Stable and Strong Ourput
No Consumables
Various Gases for Operation
Compatible to TMM 304 UV Monochromator

MADE FOR THESE METHODS
APPLICATION NOTES
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MADE FOR THESE METHODS

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Angle-Resolved Photoelectron Spectroscopy detects the energy and angle distribution of photoelectrons to determine the electronic structure of solids.

APPLICATION NOTES

Small Spot UV Source UVS300

High resolution photoemission measurements demand not only the highest performance electron spectrometer, but also a UV source with high flux density and small spot size, especially for experiments with angular resolved data. SPECS has developed a focused UV source on the basis of the proven technology of the UVS 300 source. The UVS 300 generates a high density plasma by guiding the electrons extracted from a hot cathode filament along the lines of a strongly inhomogeneous magnetic field towards the small discharge region (duo-plasmatronprinciple).

Small Spot UV Source

High resolution photoemission measurements demand not only a highest performance electron spectrometer, but also a UV source with high flux density and small spot size, especially for angular resolved studies. SPECS has developed a focused UV source on the basis of the proven technology of the UVS 300 source. Using a special capillary, this source can be focused down to a theoretical spot size of 500 micrometers.

Photoelectron spectroscopy with UVLS and TMM 304

Angle-integrated and angle-resolved photoelectron spectroscopy measurements were performed using the SPECS UVLS ultraviolet-light source in combination with the toroidal-mirror monochromator SPECS TMM304, which was equipped with two cassettes of optical elements in order utilize the HeI and XeI emission lines with photon energies of hν=21.22eV and hν=8.437eV,respectively.

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UV Source Series

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Product description

Article No.

Magnetron AM763 for UVLS and PCS from mid 2014

Replacement Magnetron for SPECS UVLS and PCS for all models since middle 2014

2060009955

Male end fitting straight line 6 mm

Replacement end fitting tube connection for SPECS UVLS

2060013831

Spare part set UVLS capillary

Spare part set for SPECS UVLS including discharge capillary and Indium wire gaskets

2055011330