The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2012
Filed:
Aug. 19, 2009
Piotr Tekely, Vandoeuvre-les-Nancy, FR;
Markus Weingarth, Paris, FR;
Geoffrey Bodenhausen, Paris, FR;
Piotr Tekely, Vandoeuvre-les-Nancy, FR;
Markus Weingarth, Paris, FR;
Geoffrey Bodenhausen, Paris, FR;
Brukar BioSpin AG, Faellanden, CH;
Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, CH;
Centre National de la Recherche Scientifique (CNRS), Paris, FR;
Abstract
A method for heteronuclear decoupling in fast magic-angle spinning NMR measurements comprises application of a decoupling RF-pulse sequence with a decoupling-field amplitude νon spins of a first nucleus and of an excitation pulse on spins of a second nucleus, the sequence comprising m blocks of pulses, with m≧4, each block comprising an N-fold repetition of a pair of pulses with pulse width τand phases whereby τis equal for all pulses, whereby the phase of the pulse pair of the (i+1)-th block is inverted with respect to the pulse pair of the i-th block, with i=1 . . . m−1 and i is an odd number, whereby the pulses within each pair are phase inverted, whereby a phase shift is carried out after each j-th block, with j is an even number. The efficiency of the inventive method compares favorably with CW, TPPM, SPINAL and XiX decoupling methods at medium and high RF amplitudes, particularly under rotary resonance conditions.