First result using Angle Resolved Photoelectron Spectroscopy Beamline at Indus-1

A beamline for angle resolved photoelectron spectroscopy (ARPES) has been recently commissioned at Indus-1 synchrotron radiation source, Centre for Advanced Technology, Indore. The beamline-optics consists of a pre-focussing toroidal mirror, 1.4 meter toroidal grating monochromator (TGM) and a postfocussing toroidal mirror to cover the spectral region of 40A to 1000A. The beamline is coupled with the ARPES experimental station and it will be used for recording photoelectron spectra of various kinds of solids for studying their electronic band structure. INTRODUCTION Angle resolved photoelectron spectroscopy (ARPES) is a unique tool to map the energy dispersion curves of electrons in solids. Angle resolved photoemission experiments need a high flux for which the present ARPES beamline at Indus-I synchrotron is ideally suited. We report here typical gold and stainless steel photoelectron spectra which have been recently recorded using this beamline. BEAMLINE DESCRIPTION The heart of the beamline is a 1.4meter toroidal grating monochromator (Jobin Yvon-TGM-1400) with resolving power of (JOBIN-YVON TGM 1400) MONOCHROMATOR EXIT SLIT BEAM PIPE MIRROR CHAMBER 2 CHAMBER FOR ARPES ENTRANCE SLIT BEAM PIPE SHIELDING FRONT END LASER MIRROR CHAMBER 1 MANIPULATOR SAMPLE GONIOMETER ALIGNMENT UNIT