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Basic Principles and Elements of an NMR Experiment

Nuclear spin, characterized by a spin quantum number I, is a quantum mechanical property possessed by some nuclei. This rotation of the nucleus around its spinning axis gives rise to an angular momentum, p, whose value is defined by [Pg.252]

Following quantum mechanical rules, a nucleus with spin I may occupy (21 + 1) different energy levels when placed in a magnetic field. For l3C nuclei, I = 1/2, [Pg.252]

In collections of identical individual nuclei, there is a very slight excess of nuclei in the lower state, on the order of 1 in 105 at 25 °C, such that [Pg.253]


See other pages where Basic Principles and Elements of an NMR Experiment is mentioned: [Pg.252]    [Pg.141]   


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