@misc{PenaGraeffKrebsetal., author = {Pena, J. A. and Graeff, Christian and Krebs, Andreas and Gl{\"u}er, Claus-C.}, title = {Cross-calibration of different reconstruction kernels for vertebral trabecular microstructure measures on a clinical CT under in-vivo like settings}, language = {en} } @inproceedings{TuruHirschPenaMonneetal., author = {Turu, Valenti and Hirsch, Florian and Pena-Monne, J. L. and Raab, Thomas and Ros, X. and Marti-Bono, Carlos and Constante-Orrios, A.}, title = {Prospeccion geofisica y geomecanica de la ribera de Biescas (pirineos centrales): estructura del relleno sedimentario del fondo del valle y los sedimentos de vertiente}, series = {Resums XIII Reunio Nacional de Quaternari, AEQUA, Andorra 2011}, booktitle = {Resums XIII Reunio Nacional de Quaternari, AEQUA, Andorra 2011}, editor = {Turu, Valenti and Constante, Ana}, publisher = {Imp. Envalira [u.a.]}, address = {Andorra la Vella}, isbn = {978-99920-1-861-3}, pages = {81 -- 83}, language = {es} } @misc{OrnelasSkarinBezriadinaFuchsetal., author = {Ornelas-Skarin, Chance and Bezriadina, Tatiana and Fuchs, Matthias and Ghimire, Shambhu and Hastings, J. B. and Nguyen, Quynh L. and de la Pe{\~n}a, Gilberto and Sato, Takahiro and Shwartz, Sharon and Trigo, Mariano and Zhu, Diling and Popova-Gorelova, Daria and Reis, David A.}, title = {Second-order microscopic nonlinear optical susceptibility in a centrosymmetric material : application to imaging valence electron motion}, series = {Physical review X}, volume = {16}, journal = {Physical review X}, publisher = {APS}, address = {College Park, Maryland}, issn = {2160-3308}, doi = {10.1103/7vqw-jbs7}, pages = {011006-1 -- 011006-13}, abstract = {We report measurements of phase-matched nonlinear x-ray and optical mixing from single-crystal silicon using subresonant 0.95 eV laser pulses and 9.5 keV hard x-ray pulses from the Linear Coherent Light Source free-electron laser. The mixing signal appears as energy and momentum sidebands to the elastic Bragg peak. It is proportional to the magnitude squared of the relevant temporal and spatial Fourier components of the optically induced microscopic charges and currents. We measure the first- and second-order sideband to the 220 Bragg peak and find that the efficiency is maximized when the applied field is along the reciprocal lattice vector. For an optical intensity of approximately 1012  W/cm2, we measure peak efficiencies of 3 ×10-7 and 3 ×10-10 for the first- and second-order sideband, respectively (relative to the elastic Bragg peak). The first-order sideband is consistent with induced microscopic currents along the applied electric field and an isotropic response. The second-order sideband depends nontrivially on the optical field orientation and is consistent with an anisotropic response originating from induced charges along the bonds with C3⁢𝑣site symmetry. The results agree well with first-principles Floquet-Bloch calculations.tions.}, language = {en} }