| Автор | J P Marangos |
| Автор | D D Burgess |
| Автор | K G H Baldwin |
| Дата выпуска | 1988-10-28 |
| dc.description | Describes measurements of He II Balmer series line shapes and shifts, using both absorption and emission techniques, in a dense (N<sub>e</sub>=2+or-0.5*10<sup>18</sup> cm<sup>-3</sup>), cool (T<sub>e</sub>=3.4 eV) helium z-pinch plasma. Tunable coherent VUV radiation was generated around 1640 AA by Raman up-conversion in H<sub>2</sub> and around 1215 AA by frequency tripling in krypton. An absorption measurement was made on the near wing profile of the He II Balmer-alpha line (1640 AA) using the Raman up-converted light source. Emission measurements were made on the He II Balmer-beta (1215 AA) line profile; these were complemented by an accurate wavelength calibration using the tunable coherent VUV light from the frequency tripled light source. A shift in the wavelength of the Balmer-beta line centre of 0.7+or-0.2 AA to the red was observed. Discussion is given of this shift in relation to existing theories of the plasma polarisation shift. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | He II Balmer series line shifts in a dense z-pinch plasma |
| Тип | paper |
| DOI | 10.1088/0953-4075/21/20/006 |
| Electronic ISSN | 1361-6455 |
| Print ISSN | 0953-4075 |
| Журнал | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Том | 21 |
| Первая страница | 3357 |
| Последняя страница | 3367 |
| Аффилиация | J P Marangos; Blackett Lab., Imperial Coll., London, UK |
| Аффилиация | D D Burgess; Blackett Lab., Imperial Coll., London, UK |
| Аффилиация | K G H Baldwin; Blackett Lab., Imperial Coll., London, UK |
| Выпуск | 20 |
