Longitudinal/transverse relaxation times gyromagnetic ratios

Here, yj is the nuclear gyromagnetic ratio, g is the electron g-factor, is the Bohr magneton, rodH is the electron spin-proton distance, and a>i and a>s are the nuclear and electron Larmor frequencies, respectively (co = yB, where B is the magnetic field). The correlation times, Zd, are defined as 1/zd — 1/tr + 1/Te + 1/i m ( = 1,2), where iR is the rotational correlation time, and Pie and T2e are the longitudinal and transverse electron spin relaxation times of Gd +. 

G = gradient pulse (Gj-ga frequency encoding Gj-o phase encoding Gj i, selective) k = reciprocal-space wave vector q = wave vector T = pulse duration Tj = longitudinal (spin-lattice) relaxation time T2 = transverse (spin-spin relaxation time) = echo time y = gyromagnetic ratio <5= pulse duration dr = voxel size A = delay between pulses p = surface relaxation strength (relaxation for the fluid owing to relaxation centres on the solid surface) ... 

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