Angle‐resolved time‐of‐flight spectrometry of neutrals laser ablated from Nd1.85Ce0.15CuO4
Angle‐resolved time‐of‐flight spectrometry of neutrals laser ablated from Nd1.85Ce0.15CuO4
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Nd1.85Ce0.15CuO4 中性激光烧蚀的角分辨飞行时间光谱测定
DOI：
10.1063/1.357880
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发表时间：
1994
影响因子：
3.2
通讯作者：
R. V. Ingen
中科院分区：
文献类型：
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作者：
R. V. Ingen
使用四极杆质谱仪测量了从合金 Nd1.85Ce0.15CuO4 烧蚀的 O、Cu 和 Nd 原子以及 NdO 分子的角分辨飞行时间 (ARTOF) 分布。从这些分布中获得了中性粒子的角分辨产率（ARY）分布。无论中性线的类型如何，最可能的动能约为 2.3 eV。实验 ARTOF 谱与理论麦克斯韦-玻尔兹曼（FMB）分布很好地拟合，叠加在与角度相关的流速贡献上。无论考虑的原子类型如何，与这些拟合相关的温度和马赫数分别约为 1.20×103 K 和 4.9。实验 ARY 分布符合 cosp θ 分布，其中 p≊6。该 p 值远低于 FMB 分布的预期。结果根据爆炸表面蒸发以及新生 ARTOF 和 A 的烧蚀诱导等离子体中的碰撞修改进行了讨论。
Angle‐resolved time‐of‐flight (ARTOF) distributions of O, Cu, and Nd atoms and of NdO molecules ablated from the alloy Nd1.85Ce0.15CuO4 were measured with a quadrupole mass spectrometer. From these distributions angle‐resolved yield (ARY) distributions of the neutrals were obtained. The most probable kinetic energy was irrespective of the type of neutral approximately 2.3 eV. The experimental ARTOF spectra were fitted quite well with theoretical Maxwell–Boltzmann (FMB) distributions superimposed onto angle‐dependent flow‐velocity contributions. The temperatures and Mach numbers associated with these fits were about 1.20×103 K and 4.9, respectively, irrespective of the type of atom considered. The experimental ARY distributions were fitted with cosp θ distributions, where p≊6. This p value was much lower than expected from the FMB distributions. The results are discussed in terms of explosive surface evaporation followed by collisional modification in the ablation‐induced plasmas of the nascent ARTOF and A...
T.Itoh；Y.Yamamura；N.Itoh：“离子束辅助薄膜生长” ELSEVIER，59-100 (1989)
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