Thielemann, N.; Hoffmann, P.; Föhlisch, A.: A versatile detector for total fluorescence and electron yield experiments. Review of Scientific Instruments 83 (2012), p. 093109/1-3
10.1063/1.4754126
Abstract:
The combination of a non-coated silicon photodiode with electron repelling meshes makes a versatile detector for total fluorescence yield and electron yield techniques highly suitable for x-ray absorption spectroscopy. In particular, a copper mesh with a bias voltage allows to suppress or transmit the electron yield signal. The performance of this detection scheme has been characterized by near edge x-ray absorption fine structure studies of thermal oxidized silicon and sapphire. The results show that the new detector probes both electron yield and for a bias voltage exceeding the maximum photon energy the total fluorescence yield.