Electron impact collision strengths and oscillator strengths for Ni-like Nd, Sm, Eu, Gd, Ta, and W ions

Journal Article · Fri Jul 01 00:00:00 EDT 2005 · Atomic Data and Nuclear Data Tables

DOI:https://doi.org/10.1016/j.adt.2005.07.003· OSTI ID:20687212

Jiaolong, Zeng ^[1]; Jiayong, Zhong ^[2]; Gang, Zhao ^[2]; Jianmin, Yuan ^[2]

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1. National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012 (China) and Department of Applied Physics, National University of Defense Technology, Changsha 410073 (China)
2. National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012 (China)

Energy levels, oscillator strengths, and electron impact collision strengths have been calculated for Ni-like ions of Nd (Z=60), Sm (Z=62), Eu (Z=63), Gd (Z=64), Ta (Z=73), and W (Z=74) among the 249 levels belonging to the ([Ne])3s{sup 2}3p{sup 6}3d{sup 10}, 3s{sup 2}3p{sup 6}3d{sup 9}nl, 3s{sup 2}3p{sup 5}3d{sup 10}nl, 3s3p{sup 6}3d{sup 10}nl (n=4, 5; l=0,1,...,n-1) configurations. Configuration interactions among these configurations have been included in the calculations. Collision strengths have been obtained at 20 scattered electron energies (5-20,000eV) and they have been listed at six representative energies of 100, 400, 1000, 2500, 5000, and 10,000eV in this work. Effective collision strengths have been obtained by assuming a Maxwellian electron velocity distribution at 24 temperatures ranging from 100 to 3000eV. Our results are compared with those available in the literature. The relative difference is within 0.3% between our calculated energy levels and the corresponding experimental values wherever available. The energy levels are expected to be be accurate within 0.6%, while oscillator strengths and collision strengths for strong transitions are probably accurate to better than 20%. The complete dataset is available electronically from http://www.astronomy.csdb.cn/EIE/.

• OSTI ID: 20687212
• Journal Information: Atomic Data and Nuclear Data Tables, Vol. 90, Issue 2; Other Information: DOI: 10.1016/j.adt.2005.07.003; PII: S0092-640X(05)00033-1; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0092-640X
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CONFIGURATION INTERACTION
ELECTRON DIFFRACTION
ELECTRON-ION COLLISIONS
ENERGY LEVELS
EUROPIUM IONS
EV RANGE 100-1000
GADOLINIUM IONS
KEV RANGE 01-10
MULTICHARGED IONS
NEODYMIUM IONS
NUCLEAR DATA COLLECTIONS
OSCILLATOR STRENGTHS
SAMARIUM IONS
TANTALUM IONS
TUNGSTEN IONS