Low-energy electron elastic collision cross sections for ground and excited Tm, Lu and Hf atoms

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:269

Article

Felfli, Z.¹  Sokolovski, D.^2,3 

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

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

[3] Univ Basque Country, Dept Chem Phys, Leioa, Spain

关键词: Elastic scattering;    Chemical reactions;    Resonances;    Regge poles;    Catalysis;    Electron affinity;    Negative ions;   

DOI  :  10.1016/j.nimb.2011.02.088

来源: Elsevier

【 摘 要 】

Low-energy 0 <= E <= 1.0 eV electron elastic scattering from ground and excited Tm, Lu and Hf atoms has been investigated. Both total and differential cross sections have been calculated; the latter at the scattering angles 0 = 0 degrees, 90 degrees and 180 degrees. The recent Regge-pole methodology has been used for the calculations. In the method the crucial electron-electron correlation effects are accounted for through the Mulholland formula. We find that the total cross sections are characterized generally by shape resonances, Ramsauer-Townsend minima and dramatically sharp long-lived resonances from which we extract the binding energies of the negative ions. Our extracted binding energy of the Hf- negative ion from the total cross section is compared with that of Pan and Beck [14]. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

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