UV Sources

Efficient UPS and ARPES measurements rely not only on the energy analyzer but also on the excitation source. The Scienta VUV5000 is a high intensity, narrow bandwidth extreme UV source. It provides radiation con-centrated to He I (21 eV and 23 eV) and He II (41eV). The flux density per unit wavelength interval is comparable to that obtainable from the best undulator beam lines. The photon flux emitted through a 2 mm aperture is about 500 times higher than that from conventional discharge VUV sources.

The excellent stability of the Scienta VUV5000 makes it ideal for measurements such as studies of ultrathin films and nanomaterials, requiring extremely high intensity and long measurement times. In addition, the 1 meV bandwidth allows high resolution gas phase and cluster measurements.

The Scienta VUV5040 is a compact monochromator optimized for high efficiency at both HeI and HeII. By using the Scienta VUV 5040 monochromator in combination with the high intensity Scienta VUV5000 light source, a bandwidth of 1 meV and a complete separation of HeIa and HeIß are obtained.

The VUV5000 UV-source and the VUV5040 monochromator are offered as a stand alone component and as a part of the VUV5k packages. We also offer the VUV5047 which is a modified monochromator model featuring a retractable exit capillary.

 VUV components schematic

VG SCIENTA VUV5000 UV-source

The VUV5000 is the most intense He-light source on the market. At the same time, it has the narrowest line width. The photon source is based on a He plasma, generated with the ECR (Electron Cyclotron Resonance) technique. Scienta VUV5000 is also easy to handle. During routine use, it is operated by start and stop buttons, and no additional adjustment is required. On to product page

VG SCIENTA Standard VUV5k-package

The VUV5k-package standard is the combination of the VUV5000 UV-source and the VUV5040 UV-monochromator. These components form a unique light source. The VUV5000 is the most intense He-light source on the market. It also has the narrowest line width. The unique feature of the VUV5040 UV monochromator is that it can utilize the full output of the VUV5000 giving extremely high intensity at the sample even after monochromatization. On to product page

VG SCIENTA Retractable VUV5k-package

The Retractable VUV5k-package is the combination of the VUV5000 UV-source and the VUV5047 UV-monochromator. These components form a unique light source. The VUV5000 is the most intense He-light source on the market. It also has the narrowest line width. The unique feature of the VUV5047 UV monochromator is that it can utilize the full output of the VUV5000 giving extremely high intensity at the sample even after monochromatization. The VUV5047 also features a 65 mm exit capillary retraction. On to product page