L-shell absorption measurement and simulation of x-ray-heated constrained material

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: L-shell absorption photoexcitation photoionization inverse bremsstrahlung
• 年，卷（期）: 2002,（8）
• 页码范围: 795-798
• 页数: 4页
• 分类号: O4
• 语种: 英文

摘要

Using the newly-designed multi-layered target, we obtain a homogeneous Al sample plasma at high density, lowelectron temperature, and in near local thermodynamic equilibrium. L-shell resonance absorption lines of Li-like andBe-like ions, as well as satellites are clearly observed. Transition arrays such as 2s-3p, 2s2-2s3p and 2s2p-2p3p areidentified. We present the calculation method based on the unresolved transition axray model, and we compare themeasured transmission spectrum with the calculated results. The electron temperature of the constrained sample plasmais determined to be 34eV with a variation of ±2eV.