Electronic Energy Transfer Phenomena in Rare Gases
Electronic Energy Transfer Phenomena in Rare Gases
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稀有气体中的电子能量转移现象
DOI：
10.1063/1.1678779
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发表时间：
1972
影响因子：
4.4
通讯作者：
A. Szöke
中科院分区：
文献类型：
--
作者：
A. Gedanken;J. Jortner;B. Raz;A. Szöke
在本文中，我们介绍了脉冲放电激发的氙-氩、氪-氩和氙-氪气体混合物中电子能量转移的实验研究结果。电子能量转移的光谱证据是基于在存在少量（10-1000 ppm）外来稀有气体原子的情况下，激发的双原子同核稀有气体分子的真空紫外发射强度的降低，而主体气体的可见发射光谱在这些条件下几乎没有改变。通过能量传递效率对主体压力依赖性的动力学分析，建立了涉及原子-原子和分子-原子能量传递的两种能量传递机制的相对贡献。我们已经确定了从最低亚稳态 Ar 和 Kr 激发态、从最低激发态 Ar2* 和 Kr2* 到基态 Xe、从亚稳态激发态 Ar 和从 Ar2* 到 g 的能量转移截面。
In this paper we present the results of an experimental study of electronic energy transfer in xenon‐argon, krypton‐argon, and xenon‐krypton gaseous mixtures excited by a pulsed electric discharge. Spectroscopic evidence for electronic energy transfer is based on the decrease in the intensity of the vacuum ultraviolet emission of the excited diatomic homonuclear rare gas molecules in the presence of small amounts (10–1000 ppm) of a foreign rare gas atom, while the visible emission spectrum of the host gas is parctically unmodified under these conditions. The relative contributions of two energy transfer mechanisms involving atom‐atom and molecule‐atom energy transfer were established by a kinetic analysis of the dependence of the energy transfer efficiency on the host pressure. We have determined the cross sections for energy transfer from the lowest metastable Ar and Kr excited states, and from the lowest excited state of Ar2* and Kr2* to ground state Xe, and from metastable excited Ar and from Ar2* to g...