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Publikováno v:
Solid State Nuclear Magnetic Resonance. 10:137-150
The role of time symmetry in the design of amplitude-modulated (shaped) pulses for spin-1 excitation is examined. The quaternion calculus is used to calculate the quaternion elements (Euler–Rodrigues parameters) of each shaped pulse. In this manner
Autor:
Simon Habot, David J. Siminovitch
Publikováno v:
Journal of Physics A: Mathematical and General. 30:2577-2584
A disentanglement of the rotation operator introduced by Santiago and Vaidya is used to prove the composition rule for the Euler - Rodrigues parameters in a representation-independent manner. It is also shown that one of the Santiago and Vaidya disen