A long tendril of colder gas and dust extends many light years into the void from the receding ionization front.
低温气体和尘埃长长的卷须从渐行渐远的电离前沿一直延伸到数光年远的太空。
2
If the vacuum near the cathode is too poor, it will generate spark, gasionization and ion bombardment on cathode, which can result in a fast attenuation of the emission current.
This system consists of high pressure ionization chamber detector filled with Xe gas, 8051 single chip control unit and low current measuring amplifier.