High resolution monochromator for the VUV radiation from the DORIS storage ring

Area of Science:

• Atomic and Molecular Physics
• Synchrotron Radiation Science
• Spectroscopy

Background:

• The DORIS storage ring at DESY offers unique properties as a synchrotron radiation source.
• Vacuum ultraviolet (VUV) spectroscopy requires specialized equipment due to the high energy of VUV photons.

Purpose of the Study:

• To develop and describe a new experimental setup for high-resolution VUV spectroscopy.
• To leverage the capabilities of the DORIS storage ring for advanced spectroscopic measurements.

Main Methods:

• Utilized the DORIS storage ring as a synchrotron radiation source.
• Implemented a new 3-m normal incidence monochromator with a vertical dispersion plane.
• Employed photoelectrical scanning for rapid spectral acquisition.

Main Results:

• Achieved high spectral resolution of 0.03 A in first order.
• Covered a wavelength range from 3000 A to 300 A (4 eV to 40 eV).
• Demonstrated sufficient light flux and stability from the storage ring for rapid scanning.

Conclusions:

• The developed experimental setup is effective for high-resolution VUV spectroscopy.
• The DORIS storage ring provides a powerful platform for detailed spectroscopic studies in the VUV range.
• This work enables advanced investigations of material properties and atomic/molecular processes in the VUV spectrum.