We present the experimental observation of periodic quasi-equilibria in solid-state NMR. We observe these states in ordinary cross-polarization magic-angle spinning experiments on powder samples of ferrocene and alanine, and we compare our results with numerical simulations. The spin dynamics are explained by considering the coupling to the lattice as a coherent broadening of the eigenlevels of the Hamiltonian. (C) 1999 Elsevier Science B.V. All rights reserved.
Michael Graetzel, David Lyndon Emsley, Ursula Röthlisberger, Ariadni Boziki, Simone Meloni, Dominik Józef Kubicki, Aditya Mishra
Jian Wang, Olivier Schneider, Yiming Li, Yi Zhang, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Michel De Cian, Luca Pescatore, Elena Graverini, Chitsanu Khurewathanakul, Renato Quagliani, Maria Vieites Diaz, Alessandro Mapelli, Zhirui Xu, Lei Zhang, Jessica Prisciandaro, Mark Tobin, Minh Tâm Tran, Niko Neufeld, Matthew Needham, Marc-Olivier Bettler, Greig Alan Cowan, Maurizio Martinelli, Donal Patrick Hill, Cédric Potterat, Liang Sun, Pietro Marino, Mirco Dorigo, Xiaoxue Han, Sebastiana Gianì, Liupan An, Federico Leo Redi, Ilya Komarov, Thibaud Humair, Maxime Schubiger, Guido Andreassi, Bastien Luca Muster, Violaine Bellée, Frédéric Guillaume Dupertuis, Julien Rouvinet, Olivier Göran Girard, Axel Kuonen, Albert Puig Navarro, Lucía Castillo García, Hans Dijkstra, Gerhard Raven, Peter Clarke, Frédéric Teubert, Giovanni Carboni, Victor Coco, Adam Davis, Paolo Durante, Luis Alberto Granado Cardoso, Daniel Hugo Cámpora Pérez