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把脉冲可调谐染料激光器的激光调谐到钠原子3~2S_(1/2)—3~2P_(1/2)的共振激发线(ν=16961cm~(-1)),激励火焰中的钠原子。通过激光饱和激励感生非共振荧光光谱方法进行钠原子的灵敏检测,实际的检测限可达10~(-11)g/ml。
The laser of the tunable dye laser is tuned to the resonant excitation line (ν = 16961cm -1) of 3 ~ 2S_ (1/2) -3 ~ 2P_ (1/2) of sodium atom to excite the sodium atom . Sensitive detection of sodium atoms by laser induced excitation non-resonant fluorescence spectroscopy, the actual detection limit of up to 10 ~ (-11) g / ml.