Pulse-sequence optimization with analytical derivatives. Application to deuterium decoupling in oriented phases
Pulse-sequence optimization with analytical derivatives. Application to deuterium decoupling in oriented phases
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DOI：
10.1006/jmra.1996.0157
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发表时间：
1996-08-01
期刊：
影响因子：
--
通讯作者：
Ernst, RR
中科院分区：
文献类型：
--
作者：
Levante, TO;Bremi, T;Ernst, RR
一个脉冲序列的优化过程，使用梯度搜索方法与分析导数证明。该方法可用于任意复杂的自旋系统哈密顿量和任意脉冲序列，计算速度快，比差分法更精确。并将其应用于K. V. Schenker，D. Suter和A. Pines [J. Magn. Reson. 73，99（1987）]，对溶解在定向相中的五氘代苯进行了实验测试。(C)出版社：Academic Press，Inc.
A pulse-sequence optimization procedure that uses a gradient-search method with analytical derivatives is demonstrated. It can be implemented for arbitrarily complex spin-system Hamiltonians and arbitrary pulse sequences, The computational method presented is time-efficient and more accurate than difference methods. It is applied to the optimization of a pulse sequence proposed by K. V. Schenker, D. Suter, and A. Pines [J. Magn. Reson. 73, 99 (1987)] for deuterium decoupling in oriented phases, The optimized sequence is tested experimentally on pentadeuterobenzene dissolved in nematic phase. (C) 1996 Academic Press, Inc.