普朗克谱分布的辐射场对束缚电子布居的影响

Effect of a Planckian radiation field on population of bound-electrons

研究了外加普朗克辐射场对不同温度和密度下的等离子体的主量子壳层束缚电子的布居数的分布以及随时间的演化规律的调制作用.结果表明:当具有普朗克谱分布的辐射场的辐射温度接近于等离子体的电子温度,且辐射场的强度等于等效温度下的黑体谱辐射强度时,随着等离子体的时间演化,等离子体中主壳层束缚电子布居数分布由non-LTE分布过渡到LTE分布.

The basic atomic physical processes of laser beams interacting with a solid target is checked and the effects of a Planckian radiation field on the population of bound electrons are studied. The results illustrate that the radiation field, if it has a truly Planckian distribution, will influence on the physical processes in plasmas. For instance, it can ensure the distribution of the population on the different ionization stages under the LTE conditions even when the plasmas density is low enough that the collision rates do not dominate over radiative rates.