Analysis of NIF experiments with the minimal energy implosion model
We apply a recently developed analytical model of implosion and thermonuclear burn to fusion capsule experiments performed at the National Ignition Facility that used low-foot and high-foot laser pulse formats. Our theoretical predictions are consistent with the experimental data. Our studies, toget...
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creator | Cheng, B. Kwan, T. J. T. Wang, Y. M. Merrill, F. E. Cerjan, C. J. Batha, S. H. |
description | We apply a recently developed analytical model of implosion and thermonuclear burn to fusion capsule experiments performed at the National Ignition Facility that used low-foot and high-foot laser pulse formats. Our theoretical predictions are consistent with the experimental data. Our studies, together with neutron image analysis, reveal that the adiabats of the cold fuel in both low-foot and high-foot experiments are similar. That is, the cold deuterium-tritium shells in those experiments are all in a high adiabat state at the time of peak implosion velocity. The major difference between low-foot and high-foot capsule experiments is the growth of the shock-induced instabilities developed at the material interfaces which lead to fuel mixing with ablator material. Furthermore, we have compared the NIF capsules performance with the ignition criteria and analyzed the alpha particle heating in the NIF experiments. Our analysis shows that alpha heating was appreciable only in the high-foot experiments. |
doi_str_mv | 10.1063/1.4928093 |
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J. T. ; Wang, Y. M. ; Merrill, F. E. ; Cerjan, C. J. ; Batha, S. H.</creator><creatorcontrib>Cheng, B. ; Kwan, T. J. T. ; Wang, Y. M. ; Merrill, F. E. ; Cerjan, C. J. ; Batha, S. H. ; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</creatorcontrib><description>We apply a recently developed analytical model of implosion and thermonuclear burn to fusion capsule experiments performed at the National Ignition Facility that used low-foot and high-foot laser pulse formats. Our theoretical predictions are consistent with the experimental data. Our studies, together with neutron image analysis, reveal that the adiabats of the cold fuel in both low-foot and high-foot experiments are similar. That is, the cold deuterium-tritium shells in those experiments are all in a high adiabat state at the time of peak implosion velocity. The major difference between low-foot and high-foot capsule experiments is the growth of the shock-induced instabilities developed at the material interfaces which lead to fuel mixing with ablator material. Furthermore, we have compared the NIF capsules performance with the ignition criteria and analyzed the alpha particle heating in the NIF experiments. Our analysis shows that alpha heating was appreciable only in the high-foot experiments.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/1.4928093</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; Ablative materials ; adiabatic theorem ; Alpha particles ; Alpha rays ; computer modeling ; data analysis ; Deuterium ; energy efficiency ; experiment design ; Experiments ; Heating ; Ignition ; Image analysis ; inertial confinement ; Mathematical models ; neutron imaging ; neutron sources ; neutrons ; Nuclear fuels ; Plasma physics ; Richtmyer Meshkov instabilities ; Tritium</subject><ispartof>Physics of plasmas, 2015-08, Vol.22 (8)</ispartof><rights>2015 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c284t-baf79f78fcfeceba593b1a012f1415492a63a74c76695e054d3793d86d6ff1083</citedby><cites>FETCH-LOGICAL-c284t-baf79f78fcfeceba593b1a012f1415492a63a74c76695e054d3793d86d6ff1083</cites><orcidid>0000-0002-5168-6845 ; 0000000158737476 ; 0000000251686845 ; 000000030603735X ; 0000000273956527 ; 0000000308036967</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,778,782,883,27911,27912</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1459807$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Cheng, B.</creatorcontrib><creatorcontrib>Kwan, T. J. T.</creatorcontrib><creatorcontrib>Wang, Y. M.</creatorcontrib><creatorcontrib>Merrill, F. E.</creatorcontrib><creatorcontrib>Cerjan, C. J.</creatorcontrib><creatorcontrib>Batha, S. H.</creatorcontrib><creatorcontrib>Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</creatorcontrib><title>Analysis of NIF experiments with the minimal energy implosion model</title><title>Physics of plasmas</title><description>We apply a recently developed analytical model of implosion and thermonuclear burn to fusion capsule experiments performed at the National Ignition Facility that used low-foot and high-foot laser pulse formats. Our theoretical predictions are consistent with the experimental data. Our studies, together with neutron image analysis, reveal that the adiabats of the cold fuel in both low-foot and high-foot experiments are similar. That is, the cold deuterium-tritium shells in those experiments are all in a high adiabat state at the time of peak implosion velocity. The major difference between low-foot and high-foot capsule experiments is the growth of the shock-induced instabilities developed at the material interfaces which lead to fuel mixing with ablator material. Furthermore, we have compared the NIF capsules performance with the ignition criteria and analyzed the alpha particle heating in the NIF experiments. Our analysis shows that alpha heating was appreciable only in the high-foot experiments.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>Ablative materials</subject><subject>adiabatic theorem</subject><subject>Alpha particles</subject><subject>Alpha rays</subject><subject>computer modeling</subject><subject>data analysis</subject><subject>Deuterium</subject><subject>energy efficiency</subject><subject>experiment design</subject><subject>Experiments</subject><subject>Heating</subject><subject>Ignition</subject><subject>Image analysis</subject><subject>inertial confinement</subject><subject>Mathematical models</subject><subject>neutron imaging</subject><subject>neutron sources</subject><subject>neutrons</subject><subject>Nuclear fuels</subject><subject>Plasma physics</subject><subject>Richtmyer Meshkov instabilities</subject><subject>Tritium</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNotkD1PwzAQQC0EEqUw8A8smBhS7Njxx1hVFCpVsIDEZrnOmbpK4hC7gv57UpXpbng63XsI3VIyo0SwRzrjulREszM0oUTpQgrJz4-7JIUQ_PMSXaW0I4RwUakJWsw72xxSSDh6_LpaYvjtYQgtdDnhn5C3OG8Bt6ELrW0wdDB8HXBo-yamEDvcxhqaa3ThbZPg5n9O0cfy6X3xUqzfnleL-bpwpeK52FgvtZfKOw8ONrbSbEMtoaWnnFbj21YwK7mTQugKSMVrJjWrlaiF96MLm6K7092YcjDJhQxu62LXgcuG8korIkfo_gT1Q_zeQ8pmF_fDKJlMSUs25iDVkXo4UW6IKQ3gTT9K2-FgKDHHkIaa_5DsD2XfY7o</recordid><startdate>20150801</startdate><enddate>20150801</enddate><creator>Cheng, B.</creator><creator>Kwan, T. 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J. T.</creatorcontrib><creatorcontrib>Wang, Y. M.</creatorcontrib><creatorcontrib>Merrill, F. E.</creatorcontrib><creatorcontrib>Cerjan, C. J.</creatorcontrib><creatorcontrib>Batha, S. H.</creatorcontrib><creatorcontrib>Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cheng, B.</au><au>Kwan, T. J. T.</au><au>Wang, Y. M.</au><au>Merrill, F. E.</au><au>Cerjan, C. J.</au><au>Batha, S. H.</au><aucorp>Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Analysis of NIF experiments with the minimal energy implosion model</atitle><jtitle>Physics of plasmas</jtitle><date>2015-08-01</date><risdate>2015</risdate><volume>22</volume><issue>8</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><abstract>We apply a recently developed analytical model of implosion and thermonuclear burn to fusion capsule experiments performed at the National Ignition Facility that used low-foot and high-foot laser pulse formats. Our theoretical predictions are consistent with the experimental data. Our studies, together with neutron image analysis, reveal that the adiabats of the cold fuel in both low-foot and high-foot experiments are similar. That is, the cold deuterium-tritium shells in those experiments are all in a high adiabat state at the time of peak implosion velocity. 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subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY Ablative materials adiabatic theorem Alpha particles Alpha rays computer modeling data analysis Deuterium energy efficiency experiment design Experiments Heating Ignition Image analysis inertial confinement Mathematical models neutron imaging neutron sources neutrons Nuclear fuels Plasma physics Richtmyer Meshkov instabilities Tritium |
title | Analysis of NIF experiments with the minimal energy implosion model |
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