Zero-core-contribution model and its application to photodetachment of atomic negative ions
Zero-core-contribution model and its application to photodetachment of atomic negative ions
复制标题
零核贡献模型及其在原子负离子光脱离中的应用
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
S. Woo
中科院分区：
文献类型：
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作者：
R. M. Stehman;S. Woo
作者假定了原子负离子的一个简单的物理模型，并得到了描述其光剥离特性的一般公式。对于所有已知L，/sup 1/2/，和E的原子负离子，都可以同时获得绝对光剥离截面和分离电子的角分布，其中，L是负离子最外层轨道电子的角动量量子数，E和/sup 1/2/分别是中性原子的电子亲和势和均方根半径。对于大多数原子阴离子，这三个输入参数的值都很容易获得。该模型似乎包含了光剥离所需的原子阴离子的主要物理属性。它的数学很简单。因此，该模型适用于更复杂的体系，特别是分子负离子的光解离，以及更复杂的过程，如负离子-中性原子电荷交换。
The authors have postulated a simple physical model for atomic negative ions and have obtained general formulas to describe their photodetachment characteristics. Absolute photodetachment cross sections, accurate to a factor of 2, and the angular distributions of detached electrons are at once made available for all atomic negative ions whose l, /sup 1/2/, and E are known, where l is the angular momentum quantum number for the outermost orbital electron of the anion, E and /sup 1/2/ are, respectively, the electron affinity and root-mean-square radius of the neutral atom. Values of these three input parameters are readily available for most atomic anions. The model seems to encompass the major physical attributes of atomic anions required for photodetachment. Its mathematics is simple. Because of this it is suggested that the model promises applicability to more complicated systems, particularly to photodetachment from molecular negative ions, and to more complicated processes, e.g., negative-ion--neutral-atom charge exchange.