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利用波长为1064nm,最大能量为500mJ的Nd:YAG脉冲激光器对紫铜进行冲击,并且改变激光能量,获得一系列等离子体特征谱线,结果表明:本实验条件下,获得铜原子谱线不完整,只有5条明显激发谱线,分别为:CuⅠ406.33nm,CuⅠ458.69nm,CuⅠ521.8nm,CuⅠ529.25nm,CuⅠ578.2nm。根据跃迁原理,得出激光不能使铜原子完全受到激发;选取CuⅠ521.8nm原子光谱与CuⅠ578.2nm的原子光谱谱线线型作为分析对象,发现其展宽线型不同,分别为Lorenz线型与Gauss线型。通过对应线型曲线方程分析得出,同一原子光谱不同波段对应形成光谱展宽机制不同。
Using a pulsed Nd: YAG laser with a wavelength of 1064 nm and a maximum energy of 500 mJ, the laser impinges on the copper and changes the laser energy to obtain a series of plasma characteristic spectra. The results show that under these experimental conditions, Only five obvious excitation lines were: CuI406.33nm, CuI458.69nm, CuI521.8nm, CuI529.25nm, CuI578.2nm. According to the principle of transition, it is concluded that the laser can not completely excite the copper atoms. Taking the spectral line of CuⅠ521.8nm and CuⅠ578.2nm as the analysis object, we find that the broadening lines are different, which are Lorenz line type and Gauss Linear. The corresponding linear curve equation analysis shows that the spectral broadening mechanisms corresponding to different bands of the same atomic spectrum are different.