M
M. M. Sant'Anna
Researcher at Lawrence Berkeley National Laboratory
Publications - 9
Citations - 240
M. M. Sant'Anna is an academic researcher from Lawrence Berkeley National Laboratory. The author has contributed to research in topics: Photoionization & Photoionization mode. The author has an hindex of 7, co-authored 9 publications receiving 229 citations. Previous affiliations of M. M. Sant'Anna include Federal University of Rio de Janeiro.
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Journal ArticleDOI
Photoionization of Ne+ using synchrotron radiation
Aaron Covington,A. Aguilar,I. R. Covington,M. F. Gharaibeh,G. Hinojosa,C. A. Shirley,R. A. Phaneuf,Ignacio Alvarez,C. Cisneros,I. Dominguez-Lopez,M. M. Sant'Anna,Alfred S. Schlachter,Brendan M. McLaughlin,Alexander Dalgarno +13 more
TL;DR: In this article, the authors used synchrotron radiation from an undulator beamline of the Advanced Light Source with a newly developed ion-photon-beam endstation.
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Spectroscopic analysis of small organic molecules: a comprehensive near-edge x-ray-absorption fine-structure study of C6-ring-containing molecules.
Christine Kolczewski,Ralph Püttner,Michael Martins,Alfred S. Schlachter,G. Snell,M. M. Sant'Anna,Klaus Hermann,G. Kaindl +7 more
TL;DR: The lowest C 1s-->1pi* excitation energy is found to agree in the (experimental and theoretical) spectra of all molecules except for 1,3-cyclohexadiene (C6H8) where an energy smaller by about 0.6 eV is obtained.
Journal ArticleDOI
Anion and cation-yield spectroscopy of core-excited SF6.
Maria Novella Piancastelli,W. C. Stolte,R. Guillemin,A. Wolska,S-W Yu,M. M. Sant'Anna,Dennis W. Lindle +6 more
TL;DR: An extensive study on total and partial-ion-yield spectroscopy around both the S 2p and F 1s thresholds in SF(6) and discusses the applicability and limits of a model developed for the analysis of shape resonances in anion yields as a function of molecular size.
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Dynamical relativistic effects in photoionization: spin-orbit-resolved angular distributions of xenon 4d photoelectrons near the Cooper minimum.
H. Wang,H. Wang,G. Snell,G. Snell,Oliver Hemmers,M. M. Sant'Anna,Ivan A. Sellin,Nora Berrah,Dennis W. Lindle,P. C. Deshmukh,P. C. Deshmukh,P. C. Deshmukh,N. Haque,Steven T. Manson +13 more
TL;DR: The results clearly imply that relativistic effects are likely to be important for intermediate- Z atoms at most energies.
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Effect of relativistic many-electron interactions on photoelectron partial wave probabilities
TL;DR: The ratio of cross sections for the production of photoelectrons with the same orbital angular momentum but different total angular momenta shows strong deviations from the statistical ratio, demonstrating the importance of relativistic interactions in many-electron photoionization dynamics.