Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilities
The feasibility of efficient X-ray sources for radiography on the LMJ (Laser MégaJoule) in the multi-kJ/ns range was demonstrated on the OMEGA laser facility (Univ. Rochester) from 2002 to 2004 [1,2]. We significantly enhanced the conversion efficiency of titanium (4–6 keV), copper (8–10 keV) and ge...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-11-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20135918001 |
| _version_ | 1819349976181899264 |
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| author | Primout M. Girard F. Villette B. Stemmler Ph. Brebion D. Nishimura H. Matsuoka Y. Yamamoto N. Marrs R. Kay J. Fournier K.B. |
| author_facet | Primout M. Girard F. Villette B. Stemmler Ph. Brebion D. Nishimura H. Matsuoka Y. Yamamoto N. Marrs R. Kay J. Fournier K.B. |
| author_sort | Primout M. |
| collection | DOAJ |
| description | The feasibility of efficient X-ray sources for radiography on the LMJ (Laser MégaJoule) in the multi-kJ/ns range was demonstrated on the OMEGA laser facility (Univ. Rochester) from 2002 to 2004 [1,2]. We significantly enhanced the conversion efficiency of titanium (4–6 keV), copper (8–10 keV) and germanium (9–13 keV) foils by using an optimized pre-pulse/pulse combination. Since higher X-ray energy and therefore electronic temperature need hydroconfinement, plastic cylindrical hohlraums internally coated with titanium, copper and germanium with various OMEGA beam configurations were successfully tested from 2005 to 2009 [3–5]. In addition, many shots with metal-doped aerogel (Ti, Fe, Ge) were tested on OMEGA [6]. Recently we tested a new concept of “HYBRID sources” based on the combination of a thin titanium foil at the exit hole of a plastic cylinder filled with very low density SiO2 aerogel (2 and 5 mg/cc). The benefit of the underdense medium is, first, to transport the laser energy to the titanium foil after its conversion into a supersonic ionization front and, second, to prevent foil expansion and excessive kinetic energy losses by longitudinal hydroconfinement. |
| first_indexed | 2024-12-24T19:09:04Z |
| format | Article |
| id | doaj.art-6949f0b494ed4577bc1f096177aec7c0 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-24T19:09:04Z |
| publishDate | 2013-11-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-6949f0b494ed4577bc1f096177aec7c02022-12-21T16:43:02ZengEDP SciencesEPJ Web of Conferences2100-014X2013-11-01591800110.1051/epjconf/20135918001Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilitiesPrimout M.Girard F.Villette B.Stemmler Ph.Brebion D.Nishimura H.Matsuoka Y.Yamamoto N.Marrs R.Kay J.Fournier K.B.The feasibility of efficient X-ray sources for radiography on the LMJ (Laser MégaJoule) in the multi-kJ/ns range was demonstrated on the OMEGA laser facility (Univ. Rochester) from 2002 to 2004 [1,2]. We significantly enhanced the conversion efficiency of titanium (4–6 keV), copper (8–10 keV) and germanium (9–13 keV) foils by using an optimized pre-pulse/pulse combination. Since higher X-ray energy and therefore electronic temperature need hydroconfinement, plastic cylindrical hohlraums internally coated with titanium, copper and germanium with various OMEGA beam configurations were successfully tested from 2005 to 2009 [3–5]. In addition, many shots with metal-doped aerogel (Ti, Fe, Ge) were tested on OMEGA [6]. Recently we tested a new concept of “HYBRID sources” based on the combination of a thin titanium foil at the exit hole of a plastic cylinder filled with very low density SiO2 aerogel (2 and 5 mg/cc). The benefit of the underdense medium is, first, to transport the laser energy to the titanium foil after its conversion into a supersonic ionization front and, second, to prevent foil expansion and excessive kinetic energy losses by longitudinal hydroconfinement.http://dx.doi.org/10.1051/epjconf/20135918001 |
| spellingShingle | Primout M. Girard F. Villette B. Stemmler Ph. Brebion D. Nishimura H. Matsuoka Y. Yamamoto N. Marrs R. Kay J. Fournier K.B. Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilities EPJ Web of Conferences |
| title | Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilities |
| title_full | Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilities |
| title_fullStr | Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilities |
| title_full_unstemmed | Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilities |
| title_short | Multi-keV x-ray sources from HYBRID targets on GEKKO and OMEGA facilities |
| title_sort | multi kev x ray sources from hybrid targets on gekko and omega facilities |
| url | http://dx.doi.org/10.1051/epjconf/20135918001 |
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