{"status":"OK","msg":"Details loaded!","speaker":{"id":12,"speaker":"H\u00e9ctor Jorge S\u00e1nchez","sarx_lecture":"Core-levels RIXS: A versatile Spectroscopic Tool for Chemical State Assessments","sarx_lecture_abstract":"In X-ray fluorescence analysis, spectra present singular characteristics produced by the different scattering processes. When atoms are irradiated with incident energy lower but close to an absorption edge, scattering peaks appear due to an inelastic process known as Resonant Inelastic X-ray Scattering (RIXS) or X-ray Resonant Raman Scattering (RRS) []. \r\n\r\nThese RIXS\/RRS peak presents a series of particular features; between them, a characteristic long-tail spreading to the region of lower energy. It has been recently observed that, hidden on this tail, there is valuable information about the local environment of the atom under study []. During the last five years, several works have been shown the first applications of RIXS (or RRS) for the discrimination, determination and characterization of chemical environments in a variety of samples and irradiation geometries and even combined with other spectroscopic techniques []. One of the most importamt features of experimental setup reported in these works is the use of an energy dispersive low- resolution spectrometer possibility for measuring RIXS spectra. \r\n\r\nIn this presentation, the basis, advantages, general highlights and latest applications of this novel and versatile tool for chemical state determinations will be presented and discussed.","earj_lecture":"","earj_lecture_abstract":"","country":"Argentina","institution":"Cordoba National University (Argentina)","earj":0,"sarx":1,"duration":30,"short_bio":"Prof. S\u00e1nchez completed his doctorate in physics at the Universidad Nacional de C\u00f3rdoba (Argentina) in 1995. He spent most of this period in the synchrotron facility ADONE of the Laboratori Nazionali di Frascati in Italy. His studies were related to the advances in x-ray fluorescence analysis with synchrotron radiation. Also in this period he mounted the XRF station of the PWA Group at the Laboratory Nazionali di Frascati, being the scientist in charge of the station till the final shutdown of ADONE in 1998. Since 1996, he spent several postdoctoral periods at the Laboratorio Nacional de Luz S\u00edncrotron in Campinas Brazil. In 1997 he acted as the director of the project of the XRF station of the LNLS. This synchrotron facility started operating in 1997 and the XRF station was opened to the users the next year. He carries out teaching activities at the Facultad de Matem\u00e1tica Astronom\u00eda, F\u00edsica y Computaci\u00f3n (Universidad Nacional de C\u00f3rdoba) since 1989. Starting with a teacher assistant position, today he has a tenure-position as full professor since 2008. He also has a Senior Researcher position at the National Scientific and Technical Research Council (CONICET, ARGENTINA). He has supervised many doctorates and undergraduate students. At present, he has more than 150 publications and more than a two hundred contributions to scientific meetings (many times as invited speaker). Today, his main projects are related to the applications of synchrotron radiation to several x-ray spectrochemical techniques, the development of x-ray optics (i.e. polycapillaries) and low probability transitions and atomic processes. He is Associate Editor of X-ray Spectrometry and member of the EXRS Advisory Board. He has acted as Secretary of the Faculty, member of the Board of his Faculty, Director of the Doctorate in Physics career, and has been an advisor to committees in several scientific and academic institutions. He has led several funded national and international projects.","cvlink":"http:\/\/www.famaf.unc.edu.ar\/~jsan\/","picture":"http:\/\/sarx2016.nbcgib.uesc.br\/speaker\/12\/picture","email":"jsan@famaf.unc.edu.ar","cvfile":null,"created_at":"-0001-11-30 00:00:00","updated_at":"2016-08-22 16:29:57","lecture":"Core-levels RIXS: A versatile Spectroscopic Tool for Chemical State Assessments","abstract":"In X-ray fluorescence analysis, spectra present singular characteristics produced by the different scattering processes. When atoms are irradiated with incident energy lower but close to an absorption edge, scattering peaks appear due to an inelastic process known as Resonant Inelastic X-ray Scattering (RIXS) or X-ray Resonant Raman Scattering (RRS) [].
\r\n
\r\nThese RIXS\/RRS peak presents a series of particular features; between them, a characteristic long-tail spreading to the region of lower energy. It has been recently observed that, hidden on this tail, there is valuable information about the local environment of the atom under study []. During the last five years, several works have been shown the first applications of RIXS (or RRS) for the discrimination, determination and characterization of chemical environments in a variety of samples and irradiation geometries and even combined with other spectroscopic techniques []. One of the most importamt features of experimental setup reported in these works is the use of an energy dispersive low- resolution spectrometer possibility for measuring RIXS spectra.
\r\n
\r\nIn this presentation, the basis, advantages, general highlights and latest applications of this novel and versatile tool for chemical state determinations will be presented and discussed."}}