Direct Measurements of DT Fuel Preheat from Hot Electrons in Direct-Drive Inertial Confinement Fusion
Hot electrons generated by laser-plasma instabilities degrade the performance of laser-fusion implosions by preheating the DT fuel and reducing core compression. The hot-electron energy deposition in the DT fuel has been directly measured for the first time by comparing the hard x-ray signals betwee...
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| creator | Christopherson, A.R. Betti, R. Forrest, C.J. Howard, J. Theobald, W. Delettrez, J.A. Rosenberg, M.J. Solodov, A.A. Stoeckl, C. Patel, D. Gopalaswamy, V. Cao, D. Peebles, J.L. Edgell, D.H. Seka, W. Epstein, R. Wei, M.S. Gatu Johnson, M. Simpson, R. Regan, S.P. Campbell, E.M. |
| description | Hot electrons generated by laser-plasma instabilities degrade the performance of laser-fusion implosions by preheating the DT fuel and reducing core compression. The hot-electron energy deposition in the DT fuel has been directly measured for the first time by comparing the hard x-ray signals between DT-layered and mass-equivalent ablator-only implosions. The electron energy deposition profile in the fuel is inferred through dedicated experiments using Cu-doped payloads of varying thickness. The measured preheat energy accurately explains the areal-density degradation observed in many OMEGA implosions. This technique can be used to assess the viability of the direct-drive approach to laser fusion with respect to the scaling of hot-electron preheat with laser energy. |
| doi_str_mv | 10.7910/dvn/peh7op |
| format | Dataset |
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The hot-electron energy deposition in the DT fuel has been directly measured for the first time by comparing the hard x-ray signals between DT-layered and mass-equivalent ablator-only implosions. The electron energy deposition profile in the fuel is inferred through dedicated experiments using Cu-doped payloads of varying thickness. The measured preheat energy accurately explains the areal-density degradation observed in many OMEGA implosions. This technique can be used to assess the viability of the direct-drive approach to laser fusion with respect to the scaling of hot-electron preheat with laser energy.</description><identifier>DOI: 10.7910/dvn/peh7op</identifier><language>eng</language><publisher>Harvard Dataverse</publisher><subject>areal densities ; direct measurement ; electron energies ; fusion implosions ; hot electron energy deposition ; laser energies ; laser-plasma instabilities ; Physics ; varying thickness</subject><creationdate>2022</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>777,1888</link.rule.ids><linktorsrc>$$Uhttps://commons.datacite.org/doi.org/10.7910/dvn/peh7op$$EView_record_in_DataCite.org$$FView_record_in_$$GDataCite.org$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Christopherson, A.R.; Betti, R.; Forrest, C.J.; Howard, J.; Theobald, W.; Delettrez, J.A.; Rosenberg, M.J.; Solodov, A.A.; Stoeckl, C.; Patel, D.; Gopalaswamy, V.; Cao, D.; Peebles, J.L.; Edgell, D.H.; Seka, W.; Epstein, R.; Wei, M.S.; Gatu Johnson, M.; Simpson, R.; Regan, S.P.; Campbell, E.M.</creatorcontrib><title>Direct Measurements of DT Fuel Preheat from Hot Electrons in Direct-Drive Inertial Confinement Fusion</title><description>Hot electrons generated by laser-plasma instabilities degrade the performance of laser-fusion implosions by preheating the DT fuel and reducing core compression. The hot-electron energy deposition in the DT fuel has been directly measured for the first time by comparing the hard x-ray signals between DT-layered and mass-equivalent ablator-only implosions. The electron energy deposition profile in the fuel is inferred through dedicated experiments using Cu-doped payloads of varying thickness. The measured preheat energy accurately explains the areal-density degradation observed in many OMEGA implosions. This technique can be used to assess the viability of the direct-drive approach to laser fusion with respect to the scaling of hot-electron preheat with laser energy.</description><subject>areal densities</subject><subject>direct measurement</subject><subject>electron energies</subject><subject>fusion implosions</subject><subject>hot electron energy deposition</subject><subject>laser energies</subject><subject>laser-plasma instabilities</subject><subject>Physics</subject><subject>varying thickness</subject><fulltext>true</fulltext><rsrctype>dataset</rsrctype><creationdate>2022</creationdate><recordtype>dataset</recordtype><sourceid>PQ8</sourceid><recordid>eNotj7FugzAURb10qJIu_YI3VyLB2MRkrCBpIiVqB3b0wM-KJbCRcSL170tLp3uHe490GHvl6UbtebrVD7cd6ab8-MyosoG6CFfC6R5oIBcn8AaqGo536uEr0I0wggl-gJOPcOjnefBuAutgOSdVsA-Cs6MQLfZQemes-2PNkMl6t2ZPBvuJXv5zxerjoS5PyeXz41y-XxKt-JjILJc7pUzLeSF51glss7m3rVI8S7UkRCrMzoi9yLnUWBSdElIZpfNUCaHFir0tWI0ROxupGYMdMHw3PG1-1ZtZvVnUxQ_IalRh</recordid><startdate>2022</startdate><enddate>2022</enddate><creator>Christopherson, A.R.; Betti, R.; Forrest, C.J.; Howard, J.; Theobald, W.; Delettrez, J.A.; Rosenberg, M.J.; Solodov, A.A.; Stoeckl, C.; Patel, D.; Gopalaswamy, V.; Cao, D.; Peebles, J.L.; Edgell, D.H.; Seka, W.; Epstein, R.; Wei, M.S.; Gatu Johnson, M.; Simpson, R.; Regan, S.P.; Campbell, E.M.</creator><general>Harvard Dataverse</general><scope>DYCCY</scope><scope>PQ8</scope></search><sort><creationdate>2022</creationdate><title>Direct Measurements of DT Fuel Preheat from Hot Electrons in Direct-Drive Inertial Confinement Fusion</title><author>Christopherson, A.R.; Betti, R.; Forrest, C.J.; Howard, J.; Theobald, W.; Delettrez, J.A.; Rosenberg, M.J.; Solodov, A.A.; Stoeckl, C.; Patel, D.; Gopalaswamy, V.; Cao, D.; Peebles, J.L.; Edgell, D.H.; Seka, W.; Epstein, R.; Wei, M.S.; Gatu Johnson, M.; Simpson, R.; Regan, S.P.; Campbell, E.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-d71p-4254677fb118412c3ab2b11bb77120d4eaae8f6f393514da88c7347f7d50733d3</frbrgroupid><rsrctype>datasets</rsrctype><prefilter>datasets</prefilter><language>eng</language><creationdate>2022</creationdate><topic>areal densities</topic><topic>direct measurement</topic><topic>electron energies</topic><topic>fusion implosions</topic><topic>hot electron energy deposition</topic><topic>laser energies</topic><topic>laser-plasma instabilities</topic><topic>Physics</topic><topic>varying thickness</topic><toplevel>online_resources</toplevel><creatorcontrib>Christopherson, A.R.; Betti, R.; Forrest, C.J.; Howard, J.; Theobald, W.; Delettrez, J.A.; Rosenberg, M.J.; Solodov, A.A.; Stoeckl, C.; Patel, D.; Gopalaswamy, V.; Cao, D.; Peebles, J.L.; Edgell, D.H.; Seka, W.; Epstein, R.; Wei, M.S.; Gatu Johnson, M.; Simpson, R.; Regan, S.P.; Campbell, E.M.</creatorcontrib><collection>DataCite (Open Access)</collection><collection>DataCite</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Christopherson, A.R.; Betti, R.; Forrest, C.J.; Howard, J.; Theobald, W.; Delettrez, J.A.; Rosenberg, M.J.; Solodov, A.A.; Stoeckl, C.; Patel, D.; Gopalaswamy, V.; Cao, D.; Peebles, J.L.; Edgell, D.H.; Seka, W.; Epstein, R.; Wei, M.S.; Gatu Johnson, M.; Simpson, R.; Regan, S.P.; Campbell, E.M.</au><format>book</format><genre>unknown</genre><ristype>DATA</ristype><title>Direct Measurements of DT Fuel Preheat from Hot Electrons in Direct-Drive Inertial Confinement Fusion</title><date>2022</date><risdate>2022</risdate><abstract>Hot electrons generated by laser-plasma instabilities degrade the performance of laser-fusion implosions by preheating the DT fuel and reducing core compression. The hot-electron energy deposition in the DT fuel has been directly measured for the first time by comparing the hard x-ray signals between DT-layered and mass-equivalent ablator-only implosions. The electron energy deposition profile in the fuel is inferred through dedicated experiments using Cu-doped payloads of varying thickness. The measured preheat energy accurately explains the areal-density degradation observed in many OMEGA implosions. This technique can be used to assess the viability of the direct-drive approach to laser fusion with respect to the scaling of hot-electron preheat with laser energy.</abstract><pub>Harvard Dataverse</pub><doi>10.7910/dvn/peh7op</doi><oa>free_for_read</oa></addata></record> |
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| identifier | DOI: 10.7910/dvn/peh7op |
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| language | eng |
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| subjects | areal densities direct measurement electron energies fusion implosions hot electron energy deposition laser energies laser-plasma instabilities Physics varying thickness |
| title | Direct Measurements of DT Fuel Preheat from Hot Electrons in Direct-Drive Inertial Confinement Fusion |
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