Department of Chemistry, New York University, New York, New York 10003, USA.
J Chem Phys. 2009 Nov 7;131(17):174501. doi: 10.1063/1.3253970.
Optimal control theory is applied for designing pulse sequences to optimally excite a spin-3/2 system with residual quadrupolar coupling in the presence of quadrupolar relaxation. A homogeneous form of the master equation is constructed to simulate the dynamics of the spin system, and a general optimization procedure with a homogeneous form of the equation of motion is described. The optimized pulses are tested with (23)Na NMR, and their performance is compared with that of pulses optimized in the absence of relaxation.
最优控制理论被应用于设计脉冲序列，以最优地激发具有剩余四极耦合的自旋-3/2 系统，同时考虑四极弛豫的影响。构建了一个均匀形式的主方程来模拟自旋系统的动力学，并描述了一个具有均匀形式运动方程的一般优化过程。优化后的脉冲用 (23)Na NMR 进行了测试，并将其性能与在没有弛豫的情况下优化的脉冲进行了比较。
