论文标题
原子不确定性在光学上薄热等离子体中的光谱含义
Spectral Implications of Atomic Uncertainties in Optically-thin Hot Plasmas
论文作者
论文摘要
两项新的高分辨率X射线光谱任务，Xrism和Athena将比以往任何时候都更深入，更深入X射线分辨率。解释这些新的X射线光谱将需要了解不确定性对基本原子量的影响，例如碰撞横截面，过渡速率和波长对光谱模型的影响。由于需要数百万个值才能生成光学上薄热等离子体的简单模型，因此大多数这样的速率仅作为理论计算存在。我们已经开发了基于公开的实验数据和对基础原子数据不确定性的合理近似值估算最终光谱计算中不确定性的方法。我们提出了pyatomDB代码的扩展，该代码实现了这些方法，并研究了X射线带通（0.3-12 KEV）中选定的强诊断线的灵敏度。
Two new high-resolution X-ray spectroscopy missions, XRISM and Athena, will observe deeper and with higher X-ray resolution than ever before possible. Interpreting these new X-ray spectra will require understanding the impact that uncertainties on fundamental atomic quantities such as collisional cross sections, transition rates, and wavelengths have on spectral models. As millions of values are required to generate even a simple model of an optically-thin hot plasma, most such rates exist only as theoretical calculations. We have developed methods to estimate the uncertainty in the final spectral calculations based on published experimental data and plausible approximations to the uncertainties in the underlying atomic data. We present an extension to the pyatomdb code that implements these methods and investigate the sensitivity of selected strong diagnostic lines in the X-ray bandpass (0.3-12 keV).
