Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14057
Title: L-shell electron excitations of Mg- through O-like tungsten ions
Authors: Dipti
Das T.
Sharma L.
Srivastava R.
Published in: Physica Scripta
Abstract: Electron impact excitations from ground state L shell viz. n=2→n=3 transitions in Mg-like W62+, Na-like W63+, Ne-like W 64+, F-like W65+ and O-like W66+ ions have been considered. A fully relativistic distorted wave (RDW) theory has been used to calculate the excitation cross-sections for an electric and magnetic dipole, as well as for the quadrupole transitions for these ions, which were observed recently in the measurements taken from an electron-beam-ion trap (EBIT-I) at the Livermore laboratory. We have performed calculations in the electron impact energy range from a threshold excitation energy of up to 60 keV. Our results, where possible, have been compared with the few previous theoretical calculations that are available. Analytic fits to our calculated excitation cross-sections have also been done for plasma modeling purposes. Our calculated cross-sections have been further employed to obtain the linear polarization of the photon emissions for dipole-allowed transitions due to the decay of the electron impact excited anisotropic states to the ground state for all five of the tungsten ions that are considered in the present work. © 2014 The Royal Swedish Academy of Sciences.
Citation: Physica Scripta (2014), 89(8): -
URI: https://doi.org/10.1088/0031-8949/89/8/085403
http://repository.iitr.ac.in/handle/123456789/14057
Issue Date: 2014
Publisher: Institute of Physics Publishing
Keywords: electron
excitation, tungsten ions
plasma
relativistic-distorted-wave theory
ISSN: 318949
Author Scopus IDs: 23767790900
57208822973
14046198100
7401868829
Author Affiliations: Dipti, Department of Physics, Indian Institute of Technology Roorkee, Roorkee-247667, India
Das, T., Department of Physics, Indian Institute of Technology Roorkee, Roorkee-247667, India
Sharma, L., Department of Physics, Indian Institute of Technology Roorkee, Roorkee-247667, India
Srivastava, R., Department of Physics, Indian Institute of Technology Roorkee, Roorkee-247667, India
Appears in Collections:Journal Publications [PH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.