Plasma characteristic spectral line and its broadening mechanism of red copper

A series of plasma characteristic spectral lines of red copper were obtained under nanosecond laser shock with a pulsed Nd:YAG laser (1064 nm， maximum energy 500 mJ). It can be inferred from the experimental result that the copper atomic spectrum is incomplete, only five distinct excitation spectral lines (CuⅠ 406.33 nm, CuⅠ 458.69 nm, CuⅠ 521.8 nm, CuⅠ 529.25 nm, CuⅠ 578.2 nm) are found in our experimental condition. The line shapes of broadening of CuⅠ 521.8 nm and CuⅠ 578.2 nm atomic spectral lines are different, and belong to Lorenz and Gauss line shapes, respectively. The analysis of corresponding equations of line shapes shows that different bands in the same atomic spectrum correspond to different spectral broadening mechanisms.