HIS 14 HD Mono:
Monochromatic high density VUV source

The HIS 14 HD Mono has been designed for ultraviolet photoelectron spectroscopy on solids with the monochromatic discharge lines of He I and He II. Together with the small spot of 300 μm the HIS 14 HD Mono is the best choice for ARPES or PEEM applications where high flux densities into a small area are mandatory.

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Especially the momentum microscopy by means of PEEM or NanoESCA instruments takes remarkably advantage from this new source:

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Features: Robust water cooled design with direct-sight connection between the discharge area and the target for easy alignment. A port aligner facilitates the positioning of the light spot on the sample in a range of +/- 3°. For dedicated ARPES experiments there is an optional third pumping stage available for operation in the 10-10 mbar range.

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The focusing and monochromatizing of the light spot down to 300 μm is realized with state of the art synchrotron beam line optics technology.


The HIS 14 HD Mono is mounted on a flange CF 63 ID (optional: CF 100 ID) and comes with a customized adaptor flange to adapt the HIS 14 HD to the customer‘s experiment (chamber drwg. to be provided by the customer).

A low noise digital power supply provides up to 300 mA discharge current for HeI and HeII operation. The minimum photon line width with HeI excitation is below 2 meV. The power supply supports the automatic plasma ignition and the included Pirani pressure gauge.