Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility
We present the first results from an experimental campaign to measure the atomic ablator-gas mix in the deceleration phase of gas-filled capsule implosions on the National Ignition Facility. Plastic capsules containing CD layers were filled with tritium gas; as the reactants are initially separated,...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/85083 https://orcid.org/0000-0002-1020-3501 |
| _version_ | 1826208512394395648 |
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| author | Frenje, Johan A. Gatu Johnson, Maria Petrasso, Richard D. |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Frenje, Johan A. Gatu Johnson, Maria Petrasso, Richard D. |
| author_sort | Frenje, Johan A. |
| collection | MIT |
| description | We present the first results from an experimental campaign to measure the atomic ablator-gas mix in the deceleration phase of gas-filled capsule implosions on the National Ignition Facility. Plastic capsules containing CD layers were filled with tritium gas; as the reactants are initially separated, DT fusion yield provides a direct measure of the atomic mix of ablator into the hot spot gas. Capsules were imploded with x rays generated in hohlraums with peak radiation temperatures of ~294 eV. While the TT fusion reaction probes conditions in the central part (core) of the implosion hot spot, the DT reaction probes a mixed region on the outer part of the hot spot near the ablator–hot-spot interface. Experimental data were used to develop and validate the atomic-mix model used in two-dimensional simulations. |
| first_indexed | 2024-09-23T14:06:30Z |
| format | Article |
| id | mit-1721.1/85083 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:06:30Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/850832022-09-28T18:31:42Z Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility Frenje, Johan A. Gatu Johnson, Maria Petrasso, Richard D. Massachusetts Institute of Technology. Plasma Science and Fusion Center Frenje, Johan A. Gatu Johnson, Maria Petrasso, Richard D. We present the first results from an experimental campaign to measure the atomic ablator-gas mix in the deceleration phase of gas-filled capsule implosions on the National Ignition Facility. Plastic capsules containing CD layers were filled with tritium gas; as the reactants are initially separated, DT fusion yield provides a direct measure of the atomic mix of ablator into the hot spot gas. Capsules were imploded with x rays generated in hohlraums with peak radiation temperatures of ~294 eV. While the TT fusion reaction probes conditions in the central part (core) of the implosion hot spot, the DT reaction probes a mixed region on the outer part of the hot spot near the ablator–hot-spot interface. Experimental data were used to develop and validate the atomic-mix model used in two-dimensional simulations. United States. Dept. of Energy (Lawrence Livermore National Laboratory Contract DE-AC52-07NA27344) 2014-02-24T19:05:48Z 2014-02-24T19:05:48Z 2014-01 2013-07 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/85083 Smalyuk, V. A., R. E. Tipton, J. E. Pino, D. T. Casey, G. P. Grim, B. A. Remington, D. P. Rowley, et al. “Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility.” Physical Review Letters 112, no. 2 (January 2014). © 2014 American Physical Society https://orcid.org/0000-0002-1020-3501 en_US http://dx.doi.org/10.1103/PhysRevLett.112.025002 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 American Physical Society |
| spellingShingle | Frenje, Johan A. Gatu Johnson, Maria Petrasso, Richard D. Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility |
| title | Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility |
| title_full | Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility |
| title_fullStr | Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility |
| title_full_unstemmed | Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility |
| title_short | Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility |
| title_sort | measurements of an ablator gas atomic mix in indirectly driven implosions at the national ignition facility |
| url | http://hdl.handle.net/1721.1/85083 https://orcid.org/0000-0002-1020-3501 |
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