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Type: Artigo de evento
Title: Improvement On A New Concept Of Beamline Delivering High Purity Vuv Photons Starting At 7.3 Ev
Author: Fonseca P.T.
Faleiros M.M.
Moraes H.R.
Souza L.
Rodrigues G.L.P.M.
Chaves D.S.
Ambrosio C.
De Brito A.N.
Abstract: We report recent improvements and performance on the Toroidal Grating Monochromator (TGM) beamline at the Laboratório Nacional de Luz Síncrotron-LNLS. Compared to normal incidence monochromators, (NIMs), TGMs provide substantially wider energy range, less resolving power and very poor higher harmonic rejection (HHR). A new concept, MIRHACLLE [1], developed at LNLS, allows reaching more than five orders of harmonic rejection (NIM gives 10%). Previously, we were not able to reach below 12 eV using MIRHACLLE. Here we report improvements extending the lower limit to 7.3 eV. Furthermore, HHR is maintained down to the lower limit using a special gas mixture, the upper limit given by 330 eV is kept.
Rights: aberto
Identifier DOI: 10.1088/1742-6596/425/12/122003
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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