Beamline overview

The beamline is being used extensively for UV-VUV spectroscopy of molecules of current interest in Atmospheric sciences, Astro-physics, Astro-chemistry, Combustion, Plasmas, Semi-conductor etching, medical applications etc. The scopes of experiments which can be carried out using this beamline include:

1. Photoabsorption studies of atoms, molecules and radicals in gas phase, condensed phase
2. Photochemistry of molecules in excited states consequent of VUV photon absorption
3. Optical properties of materials and testing of photon detectors

The Beamline	Gas Cell

Beamline parameters & Optical layout

1. Beamline uses a constant deviation angle Seya-Namioka monochromator with 1200/2400 G/mm gold coated spherical gratings
2. The first optical element of the beamline is a vertically deflecting and horizontally mounted toroidal mirror, TM1, which accepts 5.6 mrad (H) and 41 mrad (V) of the emitted bending magnet radiation
3. TM1 focuses the light vertically on to the entrance slit S1
4. The second mirror i.e called as post focusing optics is a vertically deflecting and horizontally mounted toroidal mirror, TM2
5. Image spot size is 1mm × 1mm
6. Flux 10⁸photons/sec at the sample position

Research Activity