Zobrazeno 1 - 10
of 16
pro vyhledávání: '"P. D. Lepell"'
Publikováno v:
Physical Review Accelerators and Beams, Vol 20, Iss 10, p 100401 (2017)
A gigawatt-class nonlinear transmission line based electron beam driver is experimentally demonstrated. Four experimental series, each with a different Marx bank charge voltage (15, 20, 25, and 30 kV), were completed. Within each experimental series,
Externí odkaz:
https://doaj.org/article/44ad278de382430b8ac0720a0f72b1c5
Autor:
C. Wakefield, P. Lake, T. W. L. Sanford, J. Mills, R. Mock, Gary Wayne Cooper, R. Adams, J. Asay, D. L. Fehl, P. D. LePell, L. A. Ruggles, R. Hawn, D. Schroen-Carey, M. Cuneo, T. Cutler, P. Riley, M. Douglas, J. Armijo, D. Hebron, R. J. Leeper, D. Jobe, Gordon A. Chandler, Carlos L. Ruiz, S. Lazier, J. E. Bailey, C. Hall, S. Dropinski, T. Wagoner, T. Gilliland, G. Idzorek, Jose A. Torres, C. Deeney, C. A. Coverdale, John L. Porter, J. Seaman, R. French, D. Hanson, B. Stygar, T. Dinwoodie, M. Knudson, J. A. Seaman, R. B. Spielman, Kenneth W. Struve, J. Slopek, T. J. Nash, M. Hurst, A. Carlson, W. A. Simpson, M. S. Derzon, J. McKenney, D. Nielsen, J. McGurn, D. Wenger
Publikováno v:
Review of Scientific Instruments. 72:1167-1172
The 100 ns, 20 MA pinch-driver Z is surrounded by an extensive set of diagnostics. There are nine radial lines of sight set at 12° above horizontal and each of these may be equipped with up to five diagnostic ports. Instruments routinely fielded vie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25d087fc073449d69de405562360ed19
https://doi.org/10.1063/1.1322618
https://doi.org/10.1063/1.1322618
Autor:
John P. Apruzese, J.W. Thornhill, N. Loter, Christopher Deeney, J. J. Moschella, E. J. Yadlowsky, J. C. Davis, R. C. Hazelton, Thomas J. Nash, P. D. Lepell, S.L. Wong, B.H. Failor, K.G. Whitney
Publikováno v:
Physical Review E. 51:4823-4832
Magnesium-coated aluminum wire array Z pinch plasmas have been tested on a 4-MA, 6-TW pulsed electrical generator. A mixture of 80% aluminum and 20% magnesium is observed to maximize the radiated kilovolt x-ray yield at \ensuremath{\ge}50 kJ, which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b53b579bda891b1a8d60bd46e4c7ef37
https://doi.org/10.1103/physreve.51.4823
https://doi.org/10.1103/physreve.51.4823
Autor:
J.W. Thornhill, M. C. Coulter, P. D. Lepell, S.L. Wong, C. Deeney, J. Meachum, K.G. Whitney, B.H. Failor
Publikováno v:
Journal of Applied Physics. 75:2781-2788
Argon gas puff experiments on a 3–4 MA generator show that the K‐shell x‐ray yield is optimized for a 2.5 cm initial diameter and 110 ns implosion time. By varying the driver current, the K‐shell yield varies from 13 to 18 kJ following a curr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b02d00bfb332608aca60d2d144e94d4a
https://doi.org/10.1063/1.356217
https://doi.org/10.1063/1.356217
Publikováno v:
Physics of Fluids B: Plasma Physics. 5:992-1001
The K‐shell x ray yields from argon gas puff Z pinches are observed to increase from 3.5±1.0 kJ to 13±1.0 kJ when inwardly tilted nozzles are used on a 6 TW, 4 MA generator. This increase is associated with the elimination of the zipper effect an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bab233c18168b1e494c6ff00a2259c55
https://doi.org/10.1063/1.860949
https://doi.org/10.1063/1.860949
Autor:
P. D. Lepell, L. Warren, F.K. Childers, K.G. Whitney, I. Roth, C. McDonald, Ramjee Prasad, M. C. Coulter, P. S. Sincerny, Thomas J. Nash, C. Deeney
Publikováno v:
Journal of Applied Physics. 72:1297-1305
Implosions of 2.5‐cm‐diam neon gas shells on a 1.2 μs quarter‐period, 3 MA driver, FALCON, have produced no more than 7.6 kJ of kilovolt neon K‐shell radiation. The incorporation of a plasma opening switch produces faster current pulses: up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1425a718a4e5a9af1659e7fd56f53f7d
https://doi.org/10.1063/1.351736
https://doi.org/10.1063/1.351736
Autor:
A. S. Safronova, V. L. Kantsyrev, U. I. Safronova, A. A. Esaulov, M. F. Yilmaz, N. D. Ouart, I. Shrestha, K. W. Williamson, G. C. Osborne, P. G. Wilcox, M. E. Weller, V. Shlyaptseva, C. A. Coverdale, B. Jones, D. J. Ampleford, P. D. LePell, C. Deeney, Kevin B. Fournier
Publikováno v:
AIP Conference Proceedings.
University‐scale Z‐pinch generators are able to produce plasmas with a broad range of temperatures, densities, and opacity properties depending on the type, size, and mass of wire‐array loads and wire materials. Experiments with very different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dddd5ada144cacafe1f4c57aa9858ff0
https://doi.org/10.1063/1.3241193
https://doi.org/10.1063/1.3241193
Autor:
C. A. Coverdale, C. Deeney, B. Jones, D. J. Ampleford, P. D. LePell, A. S. Safronova, V. Kantsyrev, N. Ouart, V. V. Ivanov, A. Haboub, K. Williamson, I. Shrestha, G. Osborne
Publikováno v:
2007 IEEE 34th International Conference on Plasma Science (ICOPS).
Summary form only given. Precursor plasmas, both the early time precursor flow of mass and the accumulation of this material on axis, have been observed on many z-pinch experiments at various facilities, including low current ( 15 MA, Z) facilities.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73f756613918189495058904ae8f6460
https://doi.org/10.1109/ppps.2007.4345901
https://doi.org/10.1109/ppps.2007.4345901
Autor:
J. P. Apruzese, C. A. Coverdale, P. D. LePell, C. J. Meyer, B. Jones, R. W. Clark, K. J. Peterson, C. Deeney, J. Davis
Publikováno v:
AIP Conference Proceedings.
The Z machine at Sandia National Laboratories drives 20 MA in 100 ns through a cylindrical array of fine wires which implodes due to the strong j × B force, generating up to 250 TW of soft x‐ray radiation when the z‐pinch plasma stagnates on axi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92de53560b3dd8195fc4b8b208475ae9
https://doi.org/10.1063/1.2768855
https://doi.org/10.1063/1.2768855
Publikováno v:
Physical review letters. 96(7)
Pulsed power driven metallic wire-array Z pinches are the most powerful and efficient laboratory x-ray sources. Furthermore, under certain conditions the soft x-ray energy radiated in a 5 ns pulse at stagnation can exceed the estimated kinetic energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7ea93965ceb9cb5325b4a638a4899161
https://pubmed.ncbi.nlm.nih.gov/16606100
https://pubmed.ncbi.nlm.nih.gov/16606100