R
R. J. Leeper
Researcher at Sandia National Laboratories
Publications - 179
Citations - 5436
R. J. Leeper is an academic researcher from Sandia National Laboratories. The author has contributed to research in topics: Inertial confinement fusion & Hohlraum. The author has an hindex of 42, co-authored 179 publications receiving 5023 citations.
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Journal ArticleDOI
Progress Towards Ignition on the National Ignition Facility
M. J. Edwards,P. K. Patel,J. D. Lindl,L. J. Atherton,Siegfried Glenzer,S. W. Haan,J. D. Kilkenny,O. L. Landen,Edward I. Moses,A. Nikroo,R. D. Petrasso,T. C. Sangster,P. T. Springer,Steven H. Batha,R. Benedetti,L. A. Bernstein,Riccardo Betti,D. L. Bleuel,T. R. Boehly,D. K. Bradley,J. A. Caggiano,D. A. Callahan,P. M. Celliers,C. J. Cerjan,K. C. Chen,Daniel Clark,Gilbert Collins,E. L. Dewald,Laurent Divol,S. N. Dixit,Tilo Doeppner,D. H. Edgell,James E. Fair,Michael Farrell,R. J. Fortner,Johan Frenje,M. Gatu Johnson,E. M. Giraldez,V. Yu. Glebov,Gary Grim,B. A. Hammel,A. V. Hamza,D. R. Harding,S. P. Hatchett,N. Hein,Hans W. Herrmann,Damien Hicks,D. E. Hinkel,M. Hoppe,W. W. Hsing,Nobuhiko Izumi,B. Jacoby,O. S. Jones,Daniel H. Kalantar,Robert L. Kauffman,John Kline,J. P. Knauer,J. A. Koch,B. J. Kozioziemski,G. A. Kyrala,K. N. LaFortune,S. Le Pape,R. J. Leeper,R. A. Lerche,T. Ma,B. J. MacGowan,A. J. Mackinnon,Andrew MacPhee,Evan Mapoles,M. M. Marinak,M. Mauldin,P. W. McKenty,M. Meezan,Pierre Michel,Jose Milovich,J. D. Moody,Matthew Moran,D. H. Munro,C. L. Olson,Kathy Opachich,Art Pak,T. G. Parham,H.-S. Park,Joseph Ralph,Sean Regan,Bruce Remington,H. G. Rinderknecht,Harry Robey,M. D. Rosen,Steven Ross,Jay D. Salmonson,J. D. Sater,D. H. Schneider,Fredrick Seguin,Scott Sepke,D. A. Shaughnessy,V. A. Smalyuk,Brian Spears,Christian Stoeckl,Wolfgang Stoeffl,L. J. Suter,Cliff Thomas,R. Tommasini,Richard Town,S. V. Weber,Paul J. Wegner,K. Widman,Mark D. Wilke,Doug Wilson,Charles Yeamans,Alex Zylstra +110 more
TL;DR: In this paper, a low-Z capsule filled with deuterium-tritium (DT) fuel via laser indirect-drive inertial confinement fusion and demonstrate fusion ignition and propagating thermonuclear burn with a net energy gain of ∼5-10 (fusion yield/input laser energy).
Journal ArticleDOI
Pulsed-power-driven high energy density physics and inertial confinement fusion research
M. Keith Matzen,M. A. Sweeney,R. G. Adams,James R. Asay,James E. Bailey,Guy R. Bennett,David E. Bliss,D.D. Bloomquist,Thomas A. Brunner,R. B. Campbell,Gordon A. Chandler,Christine Anne Coverdale,M. E. Cuneo,J.-P. Davis,C. Deeney,Michael P. Desjarlais,G. L. Donovan,Christopher Joseph Garasi,Thomas A. Haill,C.A. Hall,David Lester Hanson,M. J. Hurst,Brent Manley Jones,Marcus D. Knudson,R. J. Leeper,Raymond W. Lemke,Michael G. Mazarakis,Dillon H. McDaniel,Thomas Alan Mehlhorn,Thomas J. Nash,Craig L. Olson,John L. Porter,Patrick K. Rambo,S.E. Rosenthal,Gregory Rochau,L. E. Ruggles,Chimpén Ruiz,T. W. L. Sanford,J. F. Seamen,D.B. Sinars,S. A. Slutz,Ian C. Smith,Kenneth W. Struve,William A. Stygar,Roger Alan Vesey,E.A. Weinbrecht,David Franklin Wenger,Edmund Yu +47 more
TL;DR: The Z accelerator at Sandia National Laboratories delivers ∼20MA load currents to create high magnetic fields (>1000T) and high pressures (megabar to gigabar) in a z-pinch configuration, the magnetic pressure supersonically implodes a plasma created from a cylindrical wire array, which at stagnation typically generates a plasma with energy densities of about 10MJ∕cm3 and temperatures >1keV at 0.1% of solid density as mentioned in this paper.
Journal ArticleDOI
Spectrometry of charged particles from inertial-confinement-fusion plasmas
Fredrick Seguin,Johan Frenje,Chikang Li,Damien Hicks,S. Kurebayashi,J. R. Rygg,B. E. Schwartz,R. D. Petrasso,S. Roberts,J. M. Soures,D. D. Meyerhofer,T. C. Sangster,J. P. Knauer,C. Sorce,V. Yu. Glebov,Christian Stoeckl,T. W. Phillips,R. J. Leeper,K. A. Fletcher,S. Padalino +19 more
TL;DR: Boehly et al. as mentioned in this paper used CR-39 nuclear track detectors in conjunction with magnets and/or special ranging filters for high-resolution spectrometry of charged particles from inertial confinement-fusion (ICF) experiments.
Journal ArticleDOI
Architecture of petawatt-class z-pinch accelerators.
William A. Stygar,M. E. Cuneo,Daniel Headley,H. C. Ives,R. J. Leeper,Michael G. Mazarakis,Craig L. Olson,John L. Porter,T. C. Wagoner,Joseph Ray Woodworth +9 more
TL;DR: In this article, an accelerator architecture that can serve as the basis of the design of petawatt-class $z$-pinch drivers is presented. But it does not include intermediate store transmission lines, multimegavolt gas switches, or a laser trigger system.
Journal ArticleDOI
The experimental plan for cryogenic layered target implosions on the National Ignition Facility--The inertial confinement approach to fusion
M. J. Edwards,J. D. Lindl,Brian Spears,S. V. Weber,L. J. Atherton,D. L. Bleuel,D. K. Bradley,Debra Callahan,C. J. Cerjan,David C. Clark,Gilbert Collins,James E. Fair,R. J. Fortner,Siegfried Glenzer,S. W. Haan,B. A. Hammel,A. V. Hamza,S. P. Hatchett,Nobuhiko Izumi,B. Jacoby,O. S. Jones,J. A. Koch,B. J. Kozioziemski,Otto Landen,R. A. Lerche,B. J. MacGowan,A. J. Mackinnon,Evan Mapoles,M. M. Marinak,Michael J. Moran,Edward I. Moses,D. H. Munro,D. H. Schneider,Scott Sepke,D. A. Shaughnessy,P. T. Springer,R. Tommasini,L. A. Bernstein,Wolfgang Stoeffl,Riccardo Betti,T. R. Boehly,T. C. Sangster,V. Yu. Glebov,P. W. McKenty,Sean Regan,D. H. Edgell,J. P. Knauer,Christian Stoeckl,D. R. Harding,Steven H. Batha,Gary Grim,Hans W. Herrmann,G. A. Kyrala,Mark D. Wilke,Doug Wilson,Johan Frenje,R. D. Petrasso,K. A. Moreno,H. Huang,K. C. Chen,E. M. Giraldez,J. D. Kilkenny,M. Mauldin,N. Hein,M. Hoppe,A. Nikroo,R. J. Leeper +66 more
TL;DR: The National Ignition Campaign includes low yield implosions with dudded fuel layers to study and optimize the hydrodynamic assembly of the fuel in a diagnostics rich environment as mentioned in this paper.