Simple method for electron affinity determination: results for Ca, Sr and Ce

被引：15

作者：

Felfli, Z. ^{[1
,2
]}

Msezane, A. Z. ^{[1
,2
]}

Sokolovski, D. ^{[3
]}

机构：

[1] Clark Atlanta Univ, Dept Phys, Atlanta, GA 30314 USA

[2] Clark Atlanta Univ, Ctr Theoret Studies Phys Syst, Atlanta, GA 30314 USA

[3] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2008年 / 41卷 / 04期

关键词：

D O I：

10.1088/0953-4075/41/4/041001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Benchmarking the recently developed Regge-pole methodology for electron-atom elastic scattering on the most recently measured electron affinity (EA) of the Ca atom, we illustrate the predictive power of the methodology by calculating the binding energy of the tenuously bound negative ion Sr- and predicting the value of 0.61 eV for the binding energy of the ground state of the very complicated Ce- ion, with a g-orbital electron attachment, a shape resonance at 0.37 eV and a Ramsauer-Townsend minimum at about 0.09 eV. Our calculated EA value for the Ce atom favours the latest theoretical value rather than the measured one.

引用

页数：6

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