| 摘要 |
The device comprises, opposite the secondary slit 5 and on the path of the signal coming from the dispersive element 4, means for deflecting this signal, which means may jump quasi-simultaneously from one state in which the signal is not deflected into a state in which the signal is deflected. The deflection means consist of a transparent plate 7 with parallel faces, made for example of quartz, this plate being movable and capable of tilting quasi-simultaneously between two extreme positions, one of these two positions corresponding to a deviation with respect to the normal by an angle theta chosen as a function of the deflection of the desired signal. The device may comprise several secondary slits 5 each fitted with their quartz plates 7. This then constitutes a polychromator. <IMAGE>
|
