Bremsstrahlung isochromat

Inverse Photoemission Spectroscopy (IPES) and Bremsstrahlung Isochromat Spectroscopy (BIS)... 

The unoccupied part of the density of states can also be measured, by a technique called Inverse UPS (Sometimes also referred to as BIS, Bremsstrahlung Isochromat Spectroscopie). Here a beam of low energy electrons falls on the surface, where they go into the unoccupied states and fall back to the Fermi level, under emission of a quantum hv. Measurement of this radiation as a function of the incident electron energy gives the density of unoccupied states. This technique falls outside the scope of this book. The reader is referred to the literature [5, 44],... 

F.U. Hillebrecht and M. Campagna, Bremsstrahlung isochromat spectroscopy of alloys and mixed valent compounds 425... 

Various photoemission techniques are a powerful tool for the investigation of especially large-scale features of the occupied electronic states. Numerous photoemission data are available mainly on the uranium intermetallics. These were obtained by all possible kinds of excitations such as X-ray photoemission (XPS), ultraviolet high-resolution photoemission (UPS), or synchrotron-radiation-excited photoemission with the possibility of tuning the energy of the incident radiation. The Bremsstrahlung isochromat spectroscopy (BIS) is a probe of the empty electronic states above EF. 

Inverse photoemission spectroscopy Bremsstrahlung isochromat spectroscopy IPES BIS 17... 

BIS bremsstrahlung isochromatic spec- E, scattered electric field vector ... 

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