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The LNLS soft X-ray spectroscopy beamline (1998)

Tolentino, H. ; Compagnon-Cailhol, V. ; Vicentin, F. C. ; [weitere]

Chester : International Union of Crystallography (IUCr)

Journal of synchrotron radiation 5 (1998), S. 539-541

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ISSN: 1600-5775

Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Thema: Geologie und Paläontologie , Physik

Notizen: 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 (101¯0), 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1107/S0909049597016087

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Digitale Medien

The soft X-ray spectroscopy beamline at the LNLS: technical description and commissioning results (1999)

Abbate, M. ; Vicentin, F. C. ; Compagnon-Cailhol, V. ; [weitere]

Chester : International Union of Crystallography (IUCr)

Journal of synchrotron radiation 6 (1999), S. 964-972

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Details

ISSN: 1600-5775

Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Thema: Geologie und Paläontologie , Physik

Notizen: 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 ∼1012 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 analyser. 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1107/S0909049599008122

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Digitale Medien

Commissioning and first results of the LNLS XAFS beamline (1998)

Tolentino, H. ; Cezar, J. C. ; Cruz, D. Z. ; [weitere]

Chester : International Union of Crystallography (IUCr)

Journal of synchrotron radiation 5 (1998), S. 521-523

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Details

ISSN: 1600-5775

Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Thema: Geologie und Paläontologie , Physik

Notizen: An X-ray absorption fine-structure spectroscopy beamline has been installed and commissioned at a bending-magnet source at LNLS. Three monochromators are available: a channel-cut, a double-crystal and a four-crystal set-up. They have been operated from 2500 up to 15000 eV, with a resolving power better than 5500 in the full range. Photon flux of the order of 108 photons s−1 up to 1010 photons s−1 has been attained. The experimental station is equipped with a table that can withstand a weight of 300 kg and track the vertical position of the beam with a 2.5 µm accuracy over a 120 mm stroke. The beamline has been fully characterized and the first results are presented.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1107/S0909049597015264

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