Bøger af Shawqi Mansour

In recent years, LIBS has emerged as an innovative tool for quantitative and qualititative elemental analysis of pharmaceutical materials. LIBS , a laser based technique , uses a high power laser that ablated the surface of the sample media to form a plasma plume of finely dispersed material. It's in the plasma that the ablated constituents are vaporized and dissociated into ionic and atomic species that are ultimately m excited. The ions and excited electrons in the atoms relax to their ground state as the plasma cools and emit light at wavelengths characteristics of the elemnts present in the material. Some of the more common applications of this technique are the quantitative elemental analysis of materials in metallurgy m art conservation and environmental samples. The overall excitation process takes place in sequential steps in last paragraph has been described in greater details in the content of the book.