J
J.J. Ramirez
Researcher at Sandia National Laboratories
Publications - 40
Citations - 667
J.J. Ramirez is an academic researcher from Sandia National Laboratories. The author has contributed to research in topics: Ion beam & Linear particle accelerator. The author has an hindex of 14, co-authored 40 publications receiving 643 citations.
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Journal ArticleDOI
X-ray emission from z pinches at 10 7 A: current scaling, gap closure, and shot-to-shot fluctuations.
William A. Stygar,H. C. Ives,D. L. Fehl,M. E. Cuneo,Michael G. Mazarakis,James E. Bailey,G. R. Bennett,David E. Bliss,Gordon A. Chandler,R. J. Leeper,Maurice Keith Matzen,Dillon H. McDaniel,J. S. McGurn,John Lee McKenney,L. P. Mix,D. J. Muron,John L. Porter,J.J. Ramirez,L. E. Ruggles,J. F. Seamen,Walter W. Simpson,C. S. Speas,R. B. Spielman,Kenneth W. Struve,Jose A. Torres,Roger Alan Vesey,T. C. Wagoner,T. L. Gilliland,M. L. Horry,D. O. Jobe,S. Lazier,J. A. Mills,T. D. Mulville,J. Pyle,T. M. Romero,J. J. Seamen,R. M. Smelser +36 more
TL;DR: Three-dimensional radiative-magnetohydrodynamic simulations be performed to quantify the sensitivity of the x-ray emission to various initial conditions, and to determine whether an imploding z pinch is a spatiotemporal chaotic system.
Journal ArticleDOI
Improved design of a high-voltage vacuum-insulator interface
William A. Stygar,J. A. Lott,T. C. Wagoner,V. Anaya,H.C. Harjes,H. C. Ives,Z. R. Wallace,G. R. Mowrer,R. W. Shoup,J.P. Corley,R. A. Anderson,G. E. Vogtlin,Mark E. Savage,J.M. Elizondo,Brian Stoltzfus,D. M. Andercyk,D. L. Fehl,T. F. Jaramillo,D.L. Johnson,Dillon H. McDaniel,D. A. Muirhead,J. M. Radman,J.J. Ramirez,L. E. Ramirez,R. B. Spielman,Kenneth W. Struve,D. E. Walsh,E. D. Walsh,M. D. Walsh +28 more
TL;DR: In this article, a series of experiments designed to measure the flashover strength of various azimuthally symmetric $45\ifmmode^\circ\else\text degree\fi{}$ vacuum-insulator configurations was conducted.
Journal ArticleDOI
Theoretical z-pinch scaling relations for thermonuclear-fusion experiments
William A. Stygar,M. E. Cuneo,Roger Alan Vesey,H. C. Ives,Michael G. Mazarakis,Gordon A. Chandler,D. L. Fehl,R. J. Leeper,Maurice Keith Matzen,Dillon H. McDaniel,J. S. McGurn,John Lee McKenney,D. J. Muron,Craig L. Olson,John L. Porter,J.J. Ramirez,J. F. Seamen,C. S. Speas,R. B. Spielman,Kenneth W. Struve,Jose A. Torres,Eduardo Waisman,T. C. Wagoner,T. L. Gilliland +23 more
TL;DR: The results suggest that the performance of an ablation-dominated pinch, and the efficiency of a coupled pinch-accelerator system, can be improved substantially by decreasing the implosion time tau(i).
Journal ArticleDOI
55-TW magnetically insulated transmission-line system: Design, simulations, and performance
William A. Stygar,P.A. Corcoran,H. C. Ives,R. B. Spielman,J. W. Douglas,B. A. Whitney,M.A. Mostrom,T. C. Wagoner,C. S. Speas,T. L. Gilliland,G. A. Allshouse,R. E. Clark,G. L. Donovan,Thomas Patrick Hughes,D. R. Humphreys,D. M. Jaramillo,M. F. Johnson,J. W. Kellogg,R. J. Leeper,F. W. Long,T.H. Martin,T. D. Mulville,M. D. Pelock,B. P. Peyton,J. W. Poukey,J.J. Ramirez,P. G. Reynolds,J. F. Seamen,David B. Seidel,A. P. Seth,A. W. Sharpe,R.W. Shoup,J.W. Smith,D. M. Van De Valde,R.W. Wavrik +34 more
TL;DR: This paper presents a meta-modelling study of how nanofiltration affects the response of the immune system to foreign substances, using a model developed by the USGS in the 1990s and refined by the UK.
Proceedings ArticleDOI
Performance of the hermes-III gamma ray simulator
J.J. Ramirez,K.R. Prestwich,D.L. Johnson,J.P. Corley,G.J. Denison,J.A. Alexander,T.L. Franklin,P. Pankuch,T.W.L. Sanford,T. Sheridan,L. L. Torrison,G.A. Zawadzkas +11 more
TL;DR: Hermes III as discussed by the authors is a 22-MV, 730-kA, 40-ns pulsed power accelerator that drives an electron beam diode/converter to generate an intense pulse of bremsstrahlung radiation.