Laboratório Nacional
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ARTIGOS DA LINHA DE LUZ


ABBATE, F. C. VICENTIN, V. COMPAGNON-CAILHOL, M. C. ROCHA AND H. TOLENTINO, The soft X-ray spectroscopy beamline at the LNLS: technical description and commissioning results, J. Synchrotron Rad., 6, 964 (1999). doi:10.1107/S0909049599008122.

 

Abstract:

The soft X-ray spectroscopy beamline installed at a bending-magnet source in the LNLS is presented. A technical description of the main elements is given and some selected commissioning results are shown. The beamline optics was designed to cover the soft X-ray energy range from 790 up to 4000 eV. The bending-magnet source has a critical energy of 2.08 keV and delivers ~10^{12} photons.s^{-1}.mradH^{-1} (0.1% bandwidth)^{-1}(100 mA)^{-1}. The focusing element is a gold-coated toroidal mirror operating at an angle of incidence of 1°. The double-crystal monochromator has three pairs of crystals which can be selected by a lateral translation. The UHV experimental station is equipped with an ion gun, an electron gun, a LEED optics and an electron analyzer. The beamline is intended for X-ray absorption, photoemission, reflectivity and dichroism experiments. The beamline has been installed, commissioned, and is now open to the external users community.

 


 

TOLENTINO, V. COMPAGNON-CAILHOL, F. C. VICENTIN AND M. ABBATE,The LNLS soft X-ray spectroscopy beamline, J. Synchrotron Rad., 5, 539 (1998). doi:10.1107/S0909049597016087.

 

Abstract:

The soft X-ray spectroscopy beamline installed at a bending-magnet source at the LNLS is described. The optics are designed to cover energies from 800 to 4000 eV with good efficiency. The focusing element is a gold-coated toroidal mirror with an angle of incidence of 17 mrad. The UHV double-crystal monochromator has three pairs of crystals, Si (111), InSb (111) and beryl (10-10), that can be selected by a sliding movement. The UHV workstation is equipped with an ion gun, an electron gun, an electron analyser, LEED optics, an open channeltron and a photodiode array. This beamline is intended for photoemission, photoabsorption, reflectivity and dichroism experiments.