| 摘要 |
<p>An NMR probe head (3) with a coil system (9) and sample vial (4) with two centring devices spaced axially from each other and above the coil system to centre the sample vial in the radial direction. The centring devices restrict the radial scope for movement of the sample vial to such an extent that the sample vial cannot touch an endangered space (7), located in the region of the coil system. One of the centring devices is connected to the probe head. Other centring devices or guides (5a, 8) may be positioned above or below the axial extent of the NMR coil system. Flow of a temperature control gas, and use of a system of slots (21) and cams (20) are also described.</p> |
