Výsledky vyhledávání - "Evan Mapoles"

Prevention of Residual Gas Condensation on the Laser Entry Hole Windows on Cryogenic NIF Targets Using a Protective Warm Film

Autor: Evan Mapoles, Ben Haid, Jeff Atherton, Suhas Bhandarkar, John Moody, Jeremy Kroll, Cliff Thomas, A. Nikroo, J. Fair

Publikováno v: Fusion Science and Technology. 73:380-391

Early shots on the National Ignition Facility (NIF) were plagued by the buildup of a considerable mass of extraneous ice on the laser entry hole (LEH) windows, a consequence of condensation of the residual air. This resulted in higher than desired te

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1734ef2f80ca31e1254cc1190928486f
https://doi.org/10.1080/15361055.2017.1406249

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Technique for Forming Solid D2and D-T Layers for Shock Timing Experiments at the National Ignition Facility

Autor: J. D. Sater, Evan Mapoles, C. F. Walters, B. J. Kozioziemski, Francisco Espinosa-Loza, J. W. Pipes, Rebecca Dylla-Spears

Publikováno v: Fusion Science and Technology. 70:191-195

Capsule implosion experiments on the National Ignition Facility (NIF) are driven with a carefully tailored laser pulse that delivers a sequence of shocks to the ablator and fuel. In order to ensure the shocks converge at the desired position, the sho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::de1dbf92f694527c24a919b6edc6b918
https://doi.org/10.13182/fst15-204

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Cryogenic Target System for Hydrogen Layering

Publikováno v: Fusion Science and Technology. 69:407-419

Here, a cryogenic target positioning system was designed and installed on the National Ignition Facility (NIF) target chamber. This instrument incorporates the ability to fill, form, and characterize the NIF targets with hydrogen isotopes needed for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3602aac259f690d38fe179e7f7a07fd
https://doi.org/10.13182/fst15-162

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Importance of limiting hohlraum leaks at cryogenic temperatures on NIF targets

Autor: Suhas Bhandarkar, Evan Mapoles, Ben Haid, Nick Teslich

Publikováno v: High Power Laser Science and Engineering. 5

Inertial confinement fusion targets are complex systems designed to allow fine control of temperature and pressure for making precise spherical ice layers of hydrogen isotopes at cryogenic temperatures. We discuss the various technical considerations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ca8cc7b45e2d9449945ac6d00d333b7
https://doi.org/10.1017/hpl.2017.19

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First Use of Tritium at the National Ignition Facility

Autor: T. Kohut, R. Beale, Jim Cox, Ray Finucane, R Thacker, S Brereton, T. G. Parham, Evan Mapoles, Pat Epperson, J. Fair, Tom Reitz

Publikováno v: Fusion Science and Technology. 60:879-884

The National Ignition Facility (NIF) at Lawrence Livermore National Laboratory is the world’s largest and most powerful laser system for inertial confinement fusion (ICF) and experiments studying h...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::255f6dbf28e1e5e858e43b4a6e5646d1
https://doi.org/10.13182/fst11-879

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Deuterium-Tritium Fuel Layer Formation for the National Ignition Facility

Autor: B. J. Kozioziemski, J. D. Moody, A. A. Chernov, J. B. Lugten, Michael A. Johnson, Evan Mapoles, J. D. Sater

Publikováno v: Fusion Science and Technology. 59:14-25

Inertial confinement fusion requires very smooth and uniform solid deuterium-tritium (D-T) fuel layers. The National Ignition Facility (NIF) point design calls for a 65- to 75-μm-thick D-T fuel layer inside of a 2-mm-diam spherical ablator shell to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7dda6df9bdc5ed32589c3af3b19aa12
https://doi.org/10.13182/fst10-3697

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Experimental D-T Ice-Layering Target Assembly

Autor: J. W. Florio, Carlos E. Castro, J L Klingmann, E G Dzenitis, K. Segraves, E T Alger, Evan Mapoles, J. G. Reynolds, D. M. Lord, Suhas Bhandarkar

Publikováno v: Fusion Science and Technology. 55:269-275

Inertial confinementfusion ignition experiments in the National Ignition Facility require a capsule containing deuterium-tritium fuel at cryogenic temperatures. To better understand how to produce and control the required uniform fuel ice layer, expe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50bbef88780ad9d6b292305679ef5438
https://doi.org/10.13182/fst08-3506

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Optical and X-Ray Characterization of Groove Profiles in D-T Ice Layers

Autor: L. J. Atherton, A. A. Chernov, Evan Mapoles, E. L. Dewald, J. A. Koch, J. B. Lugten, J. D. Sater, Michael A. Johnson, B. J. Kozioziemski, J. W. Pipes, J. D. Moody, Sergei O. Kucheyev, N. Izumi, D. Stefanescu, Jay D. Salmonson

Publikováno v: ResearcherID

Deuterium-tritium (D-T) single-crystal ice layers in spherical shells often form with localized defects that we believe are vapor-etched grain boundary grooves built from dislocations and accommodating slight misorientations between contacting lattic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a629fa9842f9f2e4caf65012d7765f85
https://doi.org/10.13182/fst08-3455

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Benchmarking X-Ray Phase Contrast Imaging for ICF D-T Ice Characterization Using Roughened Surrogates

Autor: Abbas Nikroo, Richard C. Montesanti, E. L. Dewald, Evan Mapoles, J. D. Sater, S. A. Letts, J. A. Koch, J. D. Moody, K. P. Youngblood, J. Atherton, B. J. Kozioziemski

Publikováno v: Fusion Science and Technology. 55:260-268

We use X-ray phase contrast imaging to characterize the inner surface roughness of deuterium-tritium (D-T) ice layers in capsules for future ignition experiments. It is therefore important to quantify how well the X-ray data correlate with the actual

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1062bca27c10b3fa73016b6cab841a09
https://doi.org/10.13182/fst08-3458

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