Electron-Impact Excitation of Fe-peak Ions for Astrophysical Applications
Contribuinte(s) |
Orel, AE Starace, AF Nikolic, D Berrah, N Gorczyca, TW Kamber, EY Tanis, JA |
---|---|
Data(s) |
2009
|
Resumo |
<p>This paper discusses one of the major outstanding problems in atomic collision physics, namely the accurate theoretical treatment of electron scattering from open d-shell systems, and explores how this issue has been addressed over recent years with the development of the new parallel R-matrix suite of codes. It focuses on one code in particular - the new parallel R-matrix package PRMAT, which has recently been extended to account for relativistic fine-structure effects. This program facilitates the determination of accurate electron-impact excitation rates for complex open 3d-shell systems including the astrophysically important Fe-peak ions such as Ni II, Fe II and Fe III. Results are presented for collision strengths and Maxwellian averaged effective collision strengths for the optically forbidden fine-structure transitions of Ni II. To our knowledge this is the most extensive calculation completed to date for this ion.</p> |
Identificador | |
Idioma(s) |
eng |
Publicador |
IOP PUBLISHING LTD |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Cassidy , C M , Ramsbottom , C A , Scott , M P , Burke , P G & Ramsbottom , C 2009 , Electron-Impact Excitation of Fe-peak Ions for Astrophysical Applications . in A E Orel , A F Starace , D Nikolic , N Berrah , T W Gorczyca , E Y Kamber & J A Tanis (eds) , XXVI INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS . Journal of Physics Conference Series , vol. 194 , IOP PUBLISHING LTD , BRISTOL , 26th International Conference on Photonic, Electronic and Atomic Collisions , United Kingdom , 22-28 July . DOI: 10.1088/1742-6596/194/1/012019 |
Palavras-Chave | #PROGRAM |
Tipo |
contributionToPeriodical |