| 摘要 |
PURPOSE:To improve resolving power, precision and S/N by inputting the number of a slit plate from a console, and setting automatically a voltage of a spectroscopic detector suitable for the slit width basing on the input information. CONSTITUTION:Spectral light generated by many metal elements contained in a sample is emitted from high-temp. flames of a plasma torch 1. The light is introduced to a collimating mirror 6 through a lense 2, reflecting mirros 3, 4 and an incident slit 5, furthermore introduced to a grating 7 to rotate said light, and the spectral light of each element is selected. Then, the spectral light is passed through an emitting slit 9 from a camera mirror 8 and detected by a photomultiplier 10. The detected signal is amplified by an amplifier 11, and inputted to an A/D converter 13 through a main amplifier 12. Here, the slits 5, 9 used for the spectroscope having three kinds of gap widths are prepared, and a hole of 2 bits is opened at the specified position so that the decision of the slit number can be detected. |
