%0 Journal Article %J Systems and Control Letters, 59 (12):782-786, 2010 %D 2010 %T Feedback schemes for radiation damping suppression in NMR: a control-theoretical perspective %A Claudio Altafini %A Paola Cappellaro %A David Cory %X In NMR spectroscopy, the collective measurement is weakly invasive and its back-action is called radiation damping. The aim of this paper is to provide a control-theoretical analysis of the problem of suppressing this radiation damping. It is shown that the two feedback schemes commonly used in the NMR practice correspond one to a high gain oputput feedback for the simple case of maintaining the spin 1/2 in its inverted state, and the second to a 2-degree of freedom control design with a prefeedback that exactly cancels the radiation damping field. A general high gain feedback stabilization design not requiring the knowledge of the radiation damping time constant is also investigated. %B Systems and Control Letters, 59 (12):782-786, 2010 %I Elsevier %G en %U http://hdl.handle.net/1963/4384 %1 4132 %2 Mathematics %3 Functional Analysis and Applications %4 -1 %$ Submitted by Andrea Wehrenfennig (andreaw@sissa.it) on 2011-09-30T10:33:33Z\\nNo. of bitstreams: 1\\nAlCaCo09.pdf: 172729 bytes, checksum: b8f2ae1517b057b5f24fd2d8b3666002 (MD5) %R 10.1016/j.sysconle.2010.09.004