Doppler‐free Auger resonant Raman spectroscopy on photochemistry beamline at SPring‐8

A Doppler‐free electron spectroscopy apparatus that consists of a high‐resolution electron spectrometer and a molecular beam source has been installed on beamline 27SU at SPring‐8 in Japan. The apparatus is described and the Auger resonant Raman spectra of neon atoms recorded at the 1s ‐> 3p excitation and those of water molecules recorded at the O 1s ‐> 2b2 excitation are presented to demonstrate the performance.