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一、电弧等离子体的形成如果将气体加热到温度超过1000°K,那末由多个原子组成分子的气体其分子键将遭到破坏,使气体转入原子状态(对单原子气体例如氩,其分子本身也就是原子,所以对单原子气体没有分解的问题),即出现分解过程。气体产生分解的温度取决于气体的种类及压力。以氮为例可以用下列反应式表示:N_2+U_D→2N 式中UD—分解时外部所需加给的能量,通常用电子伏特表示。表1为不同气体分解所用的能量。
First, the formation of arc plasma If the gas is heated to a temperature above 1000 ° K, then the molecules composed of multiple atoms of the molecular bond will be destroyed, the gas into the atomic state (for a single atomic gas such as argon, its The molecule itself is an atom, so there is no problem of decomposition of the monatomic gas), that is, the decomposition process occurs. The temperature at which gas decomposes depends on the type and pressure of the gas. Nitrogen as an example can be expressed by the following reaction: N_2 + U_D → 2N Where UD-decomposition of the external required to add energy, usually expressed in electron volts. Table 1 shows the energy used for different gas decomposition.