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:
Jan. 29, 2013
Filed:
Apr. 30, 2010
Paul Romeo Vasos, Lausanne, CH;
Riddhiman Sarkar, Prilly, CH;
Puneet Ahuja, Lausanne, CH;
Geoffrey Bodenhausen, Paris, FR;
Paul Romeo Vasos, Lausanne, CH;
Riddhiman Sarkar, Prilly, CH;
Puneet Ahuja, Lausanne, CH;
Geoffrey Bodenhausen, Paris, FR;
Bruker BioSpin AG, Faelladen, CH;
Ecole Polytechnique Fédérale de Lausanne, Laussane, CH;
Abstract
A method for nuclear magnetic resonance (NMR) spectroscopy of a sample comprises preparation of the sample and carrying out an NMR spectroscopy measurement. Preparation includes excitation of long lived coherences (LLC) between the singlet state Sand the central triplet state Tof nuclei of the sample. The thermal equilibrium Boltzmann distribution (I+S) is thereby transformed into a difference (I−S), which is flipped to the transverse plane, and irradiation of the sample with an rf-field is initiated. The LLC is sustained by maintaining the rf-irradiation during an interval tand the LLC is converted into observable magnetisation by interrupting the rf-irradiation. The method allows nuclear magnetic resonance spectroscopy measurements with improved spectral resolution.