概括
双频光谱测量了激光切除过程中一氧化 (TiO) 的形成. 该研究显示,TiO的存在增加了的激发温度,并改变了原子密度的动态.
科学领域:
- 频谱学是一种光谱学.
- 激光诱导分解光谱学 (LIBS) 是一种技术.
- 血物理学的等离子体物理学
背景情况:
- 激光除金属可以产生激光制造的等离子体 (LPP).
- 了解LPP的组成和动态对于材料加工和分析至关重要.
- 一氧化 (TiO) 是LPP中的一个关键物种,影响着等离子体的特性.
研究的目的:
- 在激光切除 (Ti) 过程中定量描述一氧化 (TiO) 的形成.
- 为了确定TiO形成对等离子体温度和物种密度的影响.
- 在不同氧气条件下研究Ti和TiO物种的动态.
主要方法:
- 双频光谱 (DCS) 用于时间分辨率吸收测量.
- 高光谱分辨率 (0.91 GHz) 在宽带宽上 (1907019200 cm-1).
- 用于物种分析的TiO C(3Δ) -X(3Δ) (0,0) 波段的振动建模.
主要成果:
- DCS使得Ti和TiO柱密度和温度的定量测量成为可能.
- TiO形成与原子Ti的激发温度增加有关.
- 在有氧和没有氧的情况下观察到原子Ti柱密度动态的明显差异.
结论:
- DCS是一种强大的工具,用于描述LPP的组成和动态.
- O的形成对LPP的热性能产生了重大影响.
- 氧气的存在在LPP中Ti物种的进化中起着关键作用.
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