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Spectral moment third

The other modes are coupled only by bilinear terms resulting from the transformation of the unperturbed Hamiltonian Hq, and they become decoupled in the limiting case of equal frequencies. The spectral moments are correctly reproduced up to third order by this approach and the bandshapes of multi-mode JT systems are accurately reproduced in this way for a large range of system parameters. ... [Pg.441]

According to the theory ofLipardi and Szabo (1982), values of the spin-lattice (1/Tj) and spin-spin (1/T2) relaxation rates are dependent on three important structural and dynamic parameters. The first parameter d is proportional to pjp/r3, where p and pj are magnetic moments of nuclei interacting through space, and r is the distance between the nuclei. The second parameter c is proportional to the anisotropy of the nuclear chemical shift. In the spin-lattice relaxation case, the third parameter is the spectral density function ... [Pg.23]

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Spectral moment

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