摘要
用氮分子激光(约500 kW)泵浦可调谐染料激光(用Rh6G,调谐波长在575.5nm～615.1nm)测得Na原子光电流谱。用Langmuir探针(特制的空心阴极灯),对激光照射下的Na-Ne放电体系进行电子温度(T_e)和电子密度(n_e)测量,发现n_e正比于激光强度,T_e随着激光强度增大而增高。
The optogalvanic spectroscopy of sodium atom was measured with tunable dye laser (Rh 575.5～615.1 nm) pumped by N_2 laser (about 500 kW). The electronic temperature (T_c) and electronic density (n_c) for a Na-Ne discharged system were measured with Langmuir double probe. It was found that the n_c is proportional to laser intensity and the T_c rises as laser intensity increases.
关键词
光电流
电子
密度
测量
激光
温度
laser application
dye laser
optogalvanic spectroscopy
Langmuir probe
electronic temperature
electronic density
