Abstract: A new method of spatial localization in solids using the high off-resonance sensitivity of heteronuclear polarization transfer is presented in theory and experiment. Application in imaging and volume-selective spectroscopy are discussed and test experiments to this end are reported.

Abstract: An NMR imaging method for the investigation of, in particular, solid-like substances which are exposed to a sequence of RF pulses in a homogeneous magnetic field, said sequence including an excitation pulse sequence and an additional pulse sequence, whereby, in one case, in at least one time interval between the end of the excitation pulse sequence and the beginning of the additional pulse sequence and/or in the time interval between the end of the additional pulse sequence and the appearance of an echo signal, the homogeneous magnetic field is at least temporarily overlapped with at least one gradient field and, in another case, at least one part of the sequence of RF pulses is overlapped with at least one RF gradient field, is characterized in that the additional pulse sequence includes a magic sandwich.

Abstract: A method is disclosed for a multi-dimensional measurement of magnetic resonance in defined small volume regions of solid-state samples. The samples are arranged in a uniform homogeneous magnetic field and, in a predetermined manner, irradiated with a sequence of high frequency pulses as well as exposed to a sequence of gradient magnetic field pulses. This is done in such a way that the spin magnetization to be measured is maintained for a time interval which is longer then the amount of time needed to switch-off the gradient magnetic field pulses. Initially, in a first time interval, the magnetization of a single slice only of the sample is transferred into a transverse magnetization tilted by 90.degree. with respect to the direction of the constant homogeneous magnetic field. Thereupon, in a second time interval, volume selective gradient magnetic field pulses are irradiated on the sample.