Explain why we need/want a large magnetic field in NMR based on
the following concepts:
a. kT...
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Chemistry
Explain why we need/want a large magnetic field in NMR based onthe following concepts:
a. kT and the Boltzmann distribution
b. the energy difference between the ground and excitedstates
c. the net magnetization of the sample
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4.3 Ratings (829 Votes)
At room temp the number of spins in the lower energy level Nis slightly greater than the number in the upper level N TheNMR signal depends on this difference in population The greaterthe field B0 the greater the population difference sothe signal will be gooda according ro the equationNupperNlower eBokT where isthe gyromagnetic ratio Ns is the number of spinsBo is magnetic field strength k is
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