| 摘要 |
The invention concerns a spectroscopic measurement device comprising: - a system (2) for focusing a laser beam (3) on a sample to be analysed (4), - a system for collecting and spectroscopically analysing (17) the light rays emitted by the plasma (15), the system for collecting and analysing (17) comprising, in particular, an optic fibre (18) for collecting light. According to the invention, the device comprises: - a motorised system (23) for moving the optic fibre (18), - an optical imaging system (25) for imaging the plasma, in image form, - and a processing and control unit (24) comprising: • means for analysing the image formed by the optical imaging system in order to select an area of interest, • means for controlling the motorised system (23) in order to position the optic fibre in a position enabling it to collect light coming from the selected area of interest of the plasma. |
