| Автор | E Kimura |
| Автор | S Nakazaki |
| Автор | K A Berrington |
| Автор | P H Norrington |
| Дата выпуска | 2000-09-14 |
| dc.description | The Dirac R-matrix theory is used to calculate the collision strengths for electron impact excitation of He-like ions (S<sup>14+</sup>, Ca<sup>18+</sup> and Fe<sup>24+</sup>) using the Dirac atomic R-matrix code, which has been developed mainly by Norrington and Grant (Norrington P H and Grant I P 1987 J. Phys. B: At. Mol. Phys. 20 4869). The lowest 31 target levels are included in the calculation. Rate coefficients are obtained for transitions from the ground 1s<sup>2</sup> <sup>1</sup>S<sub>0</sub> state to the fine-structure levels of all excited states of 1s2ℓ (ℓ = 0,1) and 1s3ℓ (ℓ = 0,1,2) configurations. We compare our results for rate coefficients with the results of previous calculations, and indicate where significant differences arise because of our more accurate representation of resonance and relativistic effects. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Rate coefficients for electron impact excitation of helium-like ions within the Dirac R-matrix approach |
| Тип | paper |
| DOI | 10.1088/0953-4075/33/17/322 |
| Electronic ISSN | 1361-6455 |
| Print ISSN | 0953-4075 |
| Журнал | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Том | 33 |
| Первая страница | 3449 |
| Последняя страница | 3466 |
| Выпуск | 17 |
