Detail

UVS/µSIRIUS/TMM

The UVS 10/35 is a simple and easy to use UV light source for UPS and simple ARPES.

The µSIRIUS is a real and unique duoplasmatron type discharge VUV light source. The discharge spot is confined to a small area, which makes this source the only available point source on the market with highest performance.

The TMM 304 is a toroidal mirror monochromator for laboratory UV sources, compatible with the µSIRIUS UV source. I t can be equipped with two cassettes which are optimized for specific wavelength. Switching the cassettes can be performed without breaking the vacuum. The light is guided towards the sample by µFOCAL 100 capillary resulting in the smallest spot sizes and high photon densities.

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Differential pumping stages for TMM 304 (regular / basic / rotatable frame)

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APPLICATION NOTES

Small Spot UV Source

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

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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