论文标题
使用计算机模拟的中性氦气线的Stark扩展的新轮廓的新计算
New Calculations of Stark Broadened Profiles for Neutral Helium Lines Using Computer Simulations
论文作者
论文摘要
我们使用计算机模拟提出了针对中性氦气线的Stark扩展的新计算，其中包括一些重要方面，旨在更好地代表氦气原子的动态环境。 These include the unification of ion and electron treatment, the correction for ion dynamics, the transition of the electron contribution to broadening from the core to the wings of the profile, the numerical integration of the time evolution operator of helium perturbed by a fluctuating electric field, the Debye correction for the correlation of the motion of charged perturbers, local density variations, and particle reinjection.我们将模拟结果与文献中发表的其他结果进行了比较。我们还测试了狭窄线路（HE $λλ$ 5877和6678）和更宽的线路（He I $λλ$ 4026和4144）的模拟环境。我们发现，狭窄的线比更广泛的线条更难产生。
We present new calculations of Stark broadened profiles for neutral helium lines using computer simulations that include some important aspects aimed at better representing the dynamical environment of the helium atom. These include the unification of ion and electron treatment, the correction for ion dynamics, the transition of the electron contribution to broadening from the core to the wings of the profile, the numerical integration of the time evolution operator of helium perturbed by a fluctuating electric field, the Debye correction for the correlation of the motion of charged perturbers, local density variations, and particle reinjection. We compare the results of our simulations for the He I $λλ$4471 and 4922 lines with other results published in the literature. We also test our simulation environment for narrow lines (He I $λλ$5877 and 6678) and broader lines (He I $λλ$4026 and 4144). We find that the narrow lines are more difficult to produce adequately than the the broader ones.
