电极构形对形成大面积放电均匀性影响

 设计并制作了空心阴极、钮扣阴极、针阴极和条形阴极，利用CCD照相，在5cm×5cm口径范围内，分别对四种阴极放电的空间均匀性进行了研究。实验表明，在预电离电压800V，主放电电压3kV和气体气压约30Pa的条件下，利用空心阴极放电，能够获得空间较为均匀的放电等离子体。放电等离子体可以用作普克尔盒电光开关的等离子体电极。

Influence on discharge uniformity of electrodes configuration

Large area glow discharge plasma that is transparent and highly conductive can be used as electrodes in Pockels cell to extend the switch aperture. To investigate this technology, a glow discharging chamber with a clear aperture of 5cm×5cm was constructed, and hollow cathode, button cathode, pin cathode, bar cathode and bar anode were designed and produced. Using CCD imaging system, the discharging uniformity of different cathodes was tested with bar anode and under the different pressure pre ionization voltage and main discharging voltage. A uniform plasma can be obtained with a hollow cathode when the pre ionization voltage is about 700V, the pressure is about 30Pa, and the main discharging voltage is about 4kV, which can be used for the plasma electrode of Pockels cell.