A method and apparatus for in-process transient spectroscopic analysis of a molten metal, wherein a probe containing a pulsed high-power laser producing a pulsed laser beam having a substantially triangular pulse waveshape is immersed in the molten metal and irradiates a representative quantity of the...http://www.google.fr/patents/US4986658?utm_source=gb-gplus-shareBrevet US4986658 - Transient spectroscopic method and apparatus for in-process analysis of molten metal
Transient spectroscopic method and apparatus for in-process analysis of ...