Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography
We report on the first proton radiography of laser-irradiated hohlraums. This experiment, with vacuum gold (Au) hohlraums, resulted in observations of self-generated magnetic fields with peak values ~10[superscript 6] G. Time-gated radiographs of monoenergetic protons with discrete energies (15.0 a...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/51804 https://orcid.org/0000-0002-6919-4881 https://orcid.org/0000-0002-1020-3501 |
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| author | Betti, R. Back, C. A. Frenje, Johan A. Kilkenny, J. D. Nikroo, A. Town, R. P. Seguin, Fredrick Hampton Landen, O. L. Amendt, P. A. Petrasso, Richard D. Rygg, J. R. Soures, J. M. Meyerhofer, D. D. Knauer, J. P. Li, Chikang |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Betti, R. Back, C. A. Frenje, Johan A. Kilkenny, J. D. Nikroo, A. Town, R. P. Seguin, Fredrick Hampton Landen, O. L. Amendt, P. A. Petrasso, Richard D. Rygg, J. R. Soures, J. M. Meyerhofer, D. D. Knauer, J. P. Li, Chikang |
| author_sort | Betti, R. |
| collection | MIT |
| description | We report on the first proton radiography of laser-irradiated hohlraums. This experiment, with vacuum gold (Au) hohlraums, resulted in observations of self-generated magnetic fields with peak values ~10[superscript 6] G. Time-gated radiographs of monoenergetic protons with discrete energies (15.0 and 3.3 MeV) reveal dynamic pictures of field structures and plasma flow. Near the end of the 1-ns laser drive, a stagnating Au plasma (~10 mg cm [superscript -3]) forms at the center of the hohlraum. This is a consequence of supersonic, radially directed Au jets (~1000 μm ns[superscript -1], ~Mach 4) that arise from the interaction of laser-driven plasma bubbles expanding into one another. |
| first_indexed | 2024-09-23T16:46:19Z |
| format | Article |
| id | mit-1721.1/51804 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:46:19Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/518042022-09-29T21:23:23Z Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography Betti, R. Back, C. A. Frenje, Johan A. Kilkenny, J. D. Nikroo, A. Town, R. P. Seguin, Fredrick Hampton Landen, O. L. Amendt, P. A. Petrasso, Richard D. Rygg, J. R. Soures, J. M. Meyerhofer, D. D. Knauer, J. P. Li, Chikang Massachusetts Institute of Technology. Plasma Science and Fusion Center Petrasso, Richard D. Li, Chikang Seguin, Fredrick Hampton Frenje, Johan A. Petrasso, Richard D. We report on the first proton radiography of laser-irradiated hohlraums. This experiment, with vacuum gold (Au) hohlraums, resulted in observations of self-generated magnetic fields with peak values ~10[superscript 6] G. Time-gated radiographs of monoenergetic protons with discrete energies (15.0 and 3.3 MeV) reveal dynamic pictures of field structures and plasma flow. Near the end of the 1-ns laser drive, a stagnating Au plasma (~10 mg cm [superscript -3]) forms at the center of the hohlraum. This is a consequence of supersonic, radially directed Au jets (~1000 μm ns[superscript -1], ~Mach 4) that arise from the interaction of laser-driven plasma bubbles expanding into one another. University of Rochester Fusion Science Center Laboratory for Laser Energetics Lawrence Livermore National Laboratory General Atomics U.S. Department of Energy 2010-02-24T14:41:28Z 2010-02-24T14:41:28Z 2009-05 2009-01 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/51804 Li, C. K. et al. “Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography.” Physical Review Letters 102.20 (2009): 205001. © 2009 The American Physical Society. https://orcid.org/0000-0002-6919-4881 https://orcid.org/0000-0002-1020-3501 en_US http://dx.doi.org/10.1103/PhysRevLett.102.205001 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Betti, R. Back, C. A. Frenje, Johan A. Kilkenny, J. D. Nikroo, A. Town, R. P. Seguin, Fredrick Hampton Landen, O. L. Amendt, P. A. Petrasso, Richard D. Rygg, J. R. Soures, J. M. Meyerhofer, D. D. Knauer, J. P. Li, Chikang Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography |
| title | Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography |
| title_full | Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography |
| title_fullStr | Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography |
| title_full_unstemmed | Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography |
| title_short | Observations of Electromagnetic Fields and Plasma Flow in Hohlraums with Proton Radiography |
| title_sort | observations of electromagnetic fields and plasma flow in hohlraums with proton radiography |
| url | http://hdl.handle.net/1721.1/51804 https://orcid.org/0000-0002-6919-4881 https://orcid.org/0000-0002-1020-3501 |
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