Commissioning and Operation of the First Brazilian Synchrotron Light Source

Rodrigues, Amália; Craievich, A. F.; Silva, C.E.T. Gonçalves da

doi:10.1107/s0909049597018293

Cited by 35 publications

(25 citation statements)

References 5 publications

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“…The beamline details can be found elsewhere. 27,28 The employed photon ux was roughly 1 Â 10 14 photons per cm 2 per s, with an average energy ux of 6 Â 10 4 erg cm À2 s À1 ¼ 3.7 Â 10 16 eV cm À2 s À1 . Additional details about the employed instrumentation and photon ux characterization can be obtained at Pilling and Bergantini.…”

Section: Methodsmentioning

confidence: 99%

Photochemistry and desorption induced by X-rays in water rich astrophysical ice analogs: implications for the moon Enceladus and other frozen space environments

et al. 2019

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Section: Methodsmentioning

confidence: 99%

Photochemistry and desorption induced by X-rays in water rich astrophysical ice analogs: implications for the moon Enceladus and other frozen space environments

et al. 2019

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“…15 XAS data were collected in GLSC glasses and in model compounds (CsCl and GLS glasses) with a "channel-cut" Si(111) monochromator at the Ga K-edge (10367 eV) and at the Cl K-edge (2822 eV). 14 The LNLS storage ring is a third generation machine operating at 1.37 GeV with nominal ring current of 130 mA.…”

Section: Methodsmentioning

confidence: 99%

CsCl-modified Ga₂S₃–La₂S₃ glasses: Structural approach by x-ray absorption spectroscopy

et al. 2001

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Gallium-lanthanum sulfide glasses are potential hosts for 1.3-m optical fiber amplifiers and for fiber lasers in the near and middle infrared. In these glasses the addition of CsCl increases the thermal stability region making possible to draw optical fibers, without altering the optical properties of the glass. Ga 2 S 3 -La 2 S 3 glasses modified by 10 to 40% CsCl have been studied by x-ray absorption spectroscopy, to investigate the structural role of CsCl. The chlorine environment is found similar to that in CsCl. The gallium-based network is composed from almost regular tetrahedra weakly connected by corners and is not altered by the addition of CsCl.

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“…High-purity vacuumultraviolet photons are used provided by the gas-phase harmonic filter to avoid contamination of the photon beam with high-order harmonics. 28,29 The beam intersects the effusive gaseous sample inside a high vacuum chamber, with base pressure in the range 10 -8 mbar. The working pressure was maintained below 2× 10 -6 mbar during data acquisition.…”

Section: -Experimental Sectionmentioning

confidence: 99%

Photoelectron Spectroscopy and Ionic Fragmentation of OSeCl₂ and Its Analogue OSCl₂ under VUV Irradiation

et al. 2015

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The electronic structure and the dissociative ionization of selenium oxychloride, OSeCl2, have been investigated in the valence region by using results from both photoelectron spectroscopy (PES) and synchrotron-based photoelectron photoion coincidence (PEPICO) spectra. The PES is assigned with the help of quantum chemical calculations at the outer-valence Green's function (OVGF) and symmetry adapted cluster/configuration interaction (SAC-CI) levels. The first energy ionization is observed at 11.47 eV assigned to the ionization of electrons formally delocalized over the Se, Cl, and O lone pair orbitals. Irradiation of OSeCl2 with photons in the valence region leads to the formation of OSeCl2(•+), OSeCl(+), SeCl2(•+), SeCl(+), and SeO(•+) ions. Furthermore, the inner shell Se 3p, Cl 2p, and Se 3s electronic regions of OSeCl2 together with S 2p, Cl 2p, and S 2s electronic regions of thionyl chloride, OSCl2, have been studied by using tunable synchrotron radiation. Thus, total ion yield spectra and the fragmentation patterns deduced from PEPICO spectra at the various excitation energies have been studied. Cl(+), O(•+), and Se(•+) ions appear as the most intense fragments in the OSeCl2 PEPICO spectra, like in the sulfur analogue OSCl2, whose photofragmentation is dominated by the Cl(+), O(•+), and S(•+) ions. Fragmentation processes in OSCl2 leading to the formation of the double coincidences involving atomic ions appear as the most intense in the PEPIPICO spectra.

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Commissioning and Operation of the First Brazilian Synchrotron Light Source

Cited by 35 publications

References 5 publications

Photochemistry and desorption induced by X-rays in water rich astrophysical ice analogs: implications for the moon Enceladus and other frozen space environments

Photochemistry and desorption induced by X-rays in water rich astrophysical ice analogs: implications for the moon Enceladus and other frozen space environments

CsCl-modified Ga₂S₃–La₂S₃ glasses: Structural approach by x-ray absorption spectroscopy

Photoelectron Spectroscopy and Ionic Fragmentation of OSeCl₂ and Its Analogue OSCl₂ under VUV Irradiation

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Commissioning and Operation of the First Brazilian Synchrotron Light Source

Cited by 35 publications

References 5 publications

Photochemistry and desorption induced by X-rays in water rich astrophysical ice analogs: implications for the moon Enceladus and other frozen space environments

Photochemistry and desorption induced by X-rays in water rich astrophysical ice analogs: implications for the moon Enceladus and other frozen space environments

CsCl-modified Ga2S3–La2S3 glasses: Structural approach by x-ray absorption spectroscopy

Photoelectron Spectroscopy and Ionic Fragmentation of OSeCl2 and Its Analogue OSCl2 under VUV Irradiation

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Product

Resources

About

CsCl-modified Ga₂S₃–La₂S₃ glasses: Structural approach by x-ray absorption spectroscopy

Photoelectron Spectroscopy and Ionic Fragmentation of OSeCl₂ and Its Analogue OSCl₂ under VUV Irradiation