6 2 points recent cryogenically cooled nmr probes have

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Unformatted text preview: (2 points) Recent “cryogenically cooled” NMR probes have been demonstrated to give a 3-fold to 4-fold improvement in sensitivity for a 500 MHz NMR. Considering only this aspect of spectrometer performance, which would give better sensitivity, a new state-ofthe-art 900 MHz NMR or a 500 MHz NMR with a cryoprobe? Explain your answer. (Hint: sensitivity vs. field strength) 7. (2 points) Which of the following physical properties are a function of magnetic field strength: the Larmor frequency (νL), chemical shift (δ), the spin-lattice relaxation time (T1), the spin-spin relaxation time (T2), The nuclear spin quantum number (m), the gyromagnetic ratio (γ), and spin-spin splitting (in her...
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This note was uploaded on 05/21/2013 for the course LSCBB 5501 taught by Professor Laity during the Fall '12 term at University of Missouri-Kansas City .

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