Laser induced plasma spectrum analysis system and its ability to simulate environmental change in a metallurgical vacuum furnace

摘要

A laser induced plasma spectrum analyzer includes a laser apparatus, a laser introduction system, a sample chamber, a spectrum exporting and detecting system, a light decomposing system and a spectrum receiving system, wherein the laser apparatus and the spectrum receiving system are controlled by one and the same pulse generator by sending a command. The laser emits a laser beam which is focused on a sample via the delivery system to produce a plasma at the surface of the sample and generate a laser-induced spectrum, via the export system exporting the generated fluorescence to the spectral detection subsystem a qualitative and quantitative review of the elements contained in the sample is performed by calculating, processing and analyzing the acquired spectrum, the sample chamber being a set of vacuum testing rooms simulating a metallurgical vacuum furnace, a vacuum system, a vacuum monitoring system and an induction melting system, can realize heating up to 1800 ° C, have a function of synchronously monitoring the temperature and the negative pressure, and have a good vacuum holding capability, so that the vacuum system effects a stepless change in the negative pressure of 0.1 to 10 Pa can.