Loading...
Please wait, while we are loading the content...
Similar Documents
Electron impact excitation of Fe+using the R-matrix method incorporating fine-structure effects
| Content Provider | Scilit |
|---|---|
| Author | Berrington, K. A. Burke, P. G. Hibbert, A. Mohan, M. Baluja, K. L. |
| Copyright Year | 1988 |
| Description | Journal: Journal of Physics B: Atomic, Molecular and Optical Physics Calculations, using the CRAY X-MP/48 at the SERC Rutherford Appleton Laboratory, are presented for electron impact excitation of $Fe^{+}$, in which the sixteen fine-structure levels arising from the four lowest states $3d^{6}$4s$ ^{6}$D, $3d^{7} ^{4}$F, $3d^{6}$4s$ ^{4}$D and $3d^{7} ^{4}$P are included. The R-matrix method is used in which terms of the Breit-Pauli Hamiltonian are explicitly included in both the target and the scattering descriptions. Fine-structure collision strengths are thus calculated and comparisons made with the four-state calculations of Nussbaumer and Storey (1980), and with Baluja et al (1986), who used the R-matrix method in LS coupling. The role of the 4p orbital, included in the $L^{2}$ basis of the Baluja et al calculation, is investigated: it is concluded that their approach is inconsistent unless the corresponding collision channels are also included. It is also inferred that the excitation of the third state, $3d^{6}$4s$ ^{4}$D, could be strongly affected by coupling to the $3d^{6}$4p odd parity states, which are not included in any calculation. Excitation rates are therefore presented only for fine-structure transitions between the two lowest states $(^{6}$D and$ ^{4}$F). |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-4075/21/2/017/pdf |
| Ending Page | 350 |
| Page Count | 12 |
| Starting Page | 339 |
| ISSN | 09534075 |
| e-ISSN | 13616455 |
| DOI | 10.1088/0953-4075/21/2/017 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Issue Number | 2 |
| Volume Number | 21 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1988-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics B: Atomic, Molecular and Optical Physics Atomic, Molecular and Chemical Physics Nuclear Physics Fine Structure Electron Impact |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics |
