TY - JOUR
T1 - The half-wave triplet pulse sequence for determination of longitudinal relaxation rates of single line spectra
AU - Kurland, Robert J.
AU - Parrish, Rob G.
PY - 1975/1/1
Y1 - 1975/1/1
N2 - A modified pulse triplet sequence has been developed for the measurement of longitudinal relaxation rates, 1/T1. The analysis of this "half-wave" triplet method takes account of transverse relaxation occurring during the triplet, so that the approximation employed in previous use of the triplet sequence, viz., that the interval τ between component pulses of the triplet be much less than the interval δt-2τ between successive triplets, is no longer required. Values of 1/T1 derived from triplet measurements and a Carr-Purcell spin echo measurement of 1/T2 on test samples of aqueous polymethacrylate and copper sulfate are in good agreement with values of 1/T1 obtained from conventional Carr-Purcell 180°-t-90° measurements. The half-wave triplet sequence would be useful for those cases where a single line is present in the spectrum: two repetitions of the triplet sequence to obtain n points on a magnetization recovery curve and a determination of T2 are required for the determination of 1/T1n this method, compared to at least n repetitions (for n points) in the Carr-Purcell 180°-t-90° method.
AB - A modified pulse triplet sequence has been developed for the measurement of longitudinal relaxation rates, 1/T1. The analysis of this "half-wave" triplet method takes account of transverse relaxation occurring during the triplet, so that the approximation employed in previous use of the triplet sequence, viz., that the interval τ between component pulses of the triplet be much less than the interval δt-2τ between successive triplets, is no longer required. Values of 1/T1 derived from triplet measurements and a Carr-Purcell spin echo measurement of 1/T2 on test samples of aqueous polymethacrylate and copper sulfate are in good agreement with values of 1/T1 obtained from conventional Carr-Purcell 180°-t-90° measurements. The half-wave triplet sequence would be useful for those cases where a single line is present in the spectrum: two repetitions of the triplet sequence to obtain n points on a magnetization recovery curve and a determination of T2 are required for the determination of 1/T1n this method, compared to at least n repetitions (for n points) in the Carr-Purcell 180°-t-90° method.
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U2 - 10.1016/0022-2364(75)90194-8
DO - 10.1016/0022-2364(75)90194-8
M3 - Article
AN - SCOPUS:0141816357
SN - 0022-2364
VL - 17
SP - 295
EP - 300
JO - Journal of Magnetic Resonance (1969)
JF - Journal of Magnetic Resonance (1969)
IS - 3
ER -