| 摘要 |
<p>A NMR-spectrometer with a sample exchanger is disclosed. In order to take NMR-spectrograms, it is necessary that the spins of the sample be arranged in a homogeneous magnetic field. For that purpose, NMR-spectrometers have a magnet arrangement (2) in the magnetic field of which is arranged a sampling head (5). When the spin-grid-relaxation time T1 of substances to be examined lies in the range of hours, the spectrometer is blocked for hours due to the necessary prepolarization of the sample. The invention is aimed at solving this problem. A sample magazine (11) is arranged in the magnetic field generated by the magnet arrangement (2). It offers the possibility of exposing a larger number of samples to the magnetic field of the magnet (2) while simultaneously carrying out measurements. Since measurements of samples having long spin-grid-relaxation times T1 require a considerable time, the capacity of a magazine arranged in the magnetic field is sufficient to ensure a practically continuous operation of the spectrometer, even when samples with long T1 are analysed. The design of the sample magazine (11) as a rotatable drum (21) arranged in the bore (1) of a cryomagnet is particularly appropriate for cryomagnets.</p> |
