Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus
For operation of the plasma focus in nitrogen, a focus pinch compression temperature range of 74–173 eV (0.86 × 106–2 × 106 K) is found to be suitable for good yield of nitrogen soft X-rays in the water window region. Using this temperature window, numerical experiments using five phase Lee model ha...
| Main Authors: | , |
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| Format: | Article |
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Springer US
2013
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| Online Access: | http://eprints.intimal.edu.my/84/ |
| _version_ | 1848766394334707712 |
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| author | Akel, M. Lee, S. |
| author_facet | Akel, M. Lee, S. |
| author_sort | Akel, M. |
| building | INTI Institutional Repository |
| collection | Online Access |
| description | For operation of the plasma focus in nitrogen, a focus pinch compression temperature range of 74–173 eV (0.86 × 106–2 × 106 K) is found to be suitable for good yield of nitrogen soft X-rays in the water window region. Using this temperature window, numerical experiments using five phase Lee model have been investigated on UNU/ICTP PFF and APF plasma focus devices with nitrogen filling gas. The Lee model was applied to characterize and optimize these two plasma focus devices. The optimum nitrogen soft X-ray yield was found to be Ysxr = 2.73 J, with the corresponding efficiency of 0.13 % for UNU/ICTP PFF device, while for APF device it was Ysxr = 4.84 J, with the corresponding efficiency of 0.19 % without changing the capacitor bank, merely by changing the electrode configuration and operating pressure. The Lee model code was also used to run numerical experiments for optimizing soft X-ray yield with reducing L0, varying z0 and ‘a’. From these numerical experiments we expect to increase the nitrogen soft X-ray yield of low energy plasma focus devices to maximum value of near 8 J, with the corresponding efficiency of 0.4 %, at an achievable L0 = 10 nH. |
| first_indexed | 2025-11-14T11:50:27Z |
| format | Article |
| id | intimal-84 |
| institution | INTI International University |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:50:27Z |
| publishDate | 2013 |
| publisher | Springer US |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | intimal-842016-10-06T05:37:52Z http://eprints.intimal.edu.my/84/ Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus Akel, M. Lee, S. QC Physics For operation of the plasma focus in nitrogen, a focus pinch compression temperature range of 74–173 eV (0.86 × 106–2 × 106 K) is found to be suitable for good yield of nitrogen soft X-rays in the water window region. Using this temperature window, numerical experiments using five phase Lee model have been investigated on UNU/ICTP PFF and APF plasma focus devices with nitrogen filling gas. The Lee model was applied to characterize and optimize these two plasma focus devices. The optimum nitrogen soft X-ray yield was found to be Ysxr = 2.73 J, with the corresponding efficiency of 0.13 % for UNU/ICTP PFF device, while for APF device it was Ysxr = 4.84 J, with the corresponding efficiency of 0.19 % without changing the capacitor bank, merely by changing the electrode configuration and operating pressure. The Lee model code was also used to run numerical experiments for optimizing soft X-ray yield with reducing L0, varying z0 and ‘a’. From these numerical experiments we expect to increase the nitrogen soft X-ray yield of low energy plasma focus devices to maximum value of near 8 J, with the corresponding efficiency of 0.4 %, at an achievable L0 = 10 nH. Springer US 2013 Article PeerReviewed Akel, M. and Lee, S. (2013) Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus. Journal of Fusion Energy, 32 (1). pp. 121-127. ISSN 1572-9591 http://link.springer.com/article/10.1007%2Fs10894-012-9536-2 10.1007/s10894-012-9536-2 |
| spellingShingle | QC Physics Akel, M. Lee, S. Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus |
| title | Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus |
| title_full | Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus |
| title_fullStr | Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus |
| title_full_unstemmed | Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus |
| title_short | Soft X-Ray Emission in the Water Window Region with Nitrogen Filling in a Low Energy Plasma Focus |
| title_sort | soft x-ray emission in the water window region with nitrogen filling in a low energy plasma focus |
| topic | QC Physics |
| url | http://eprints.intimal.edu.my/84/ http://eprints.intimal.edu.my/84/ http://eprints.intimal.edu.my/84/ |