首页>
外国专利>
A method for the selective registration of more compartment quanta - by means of turns in the case of nuclear magnetic resonance (nuclear magnetic resonance)
A method for the selective registration of more compartment quanta - by means of turns in the case of nuclear magnetic resonance (nuclear magnetic resonance)
展开▼
机译：一种选择性地记录更多部分量子的方法-在核磁共振（核磁共振）情况下通过轮流进行
展开▼
页面导航
摘要
著录项
相似文献
摘要
Selected orders of multiple quantum transitions may be detected by preparing a statistical non-equilibrium state of an assembly of gyromagnetic resonators of selected phase with respect to a subsequent mixing pulse. After an evolution period, t.sub.1, a 90° mixing pulse is applied and the free induction decay is sampled as a function of time, t.sub.2. The signal functions S.sub.i (t.sub.1, t.sub.2, &phgr;.sub. i) is developed for systematically varied values of t.sub.1 and specially selected values of &phgr;.sub.i. Linear combinations of the signal functions S.sub.i yield, after Fourier transformation a two dimensional spectrum of multiple quantum transitions limited by the choice of phase and linear combination. In another embodiment, a magnetic gradient pulse is applied during the evolution period and resulting multiple quantum transitions yield spectral peaks of width dependent upon the order of such transitions. In particular, all spectral peaks may be removed from resulting spectra save only zero order transitions.
展开▼
