Zobrazeno 1 - 9
of 9
pro vyhledávání: '"P W Fontana"'
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Here, Francoiset al. propose a method of remotely shaping particle trajectories by using rotating waves on a liquid gas interface. The superposition of orthogonal standing waves creates angular momentum which is transferred from waves to floating mic
Externí odkaz:
https://doaj.org/article/636f9c9403984d03a3768905d6e40aee
Autor:
Paul W. Fontana
Publikováno v:
Entropy, Vol 24, Iss 1, p 93 (2022)
Maxwell’s demon is an entity in a 150-year-old thought experiment that paradoxically appears to violate the second law of thermodynamics by reducing entropy without doing work. It has increasingly practical implications as advances in nanomachinery
Externí odkaz:
https://doaj.org/article/fe95163dcda046caa28dd2c1d74fb2c1
Publikováno v:
Physics of Plasmas. 9:766-771
Electron plasmas are trapped in a novel “partially” toroidal (or “C”-shaped) trap designed to study issues of equilibrium, stability, and confinement of toroidal nonneutral plasmas. Plasmas with densities as high as 3.3×106 cm−3 are trappe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d68927fbdc69622962d86fa93d4dff7c
https://doi.org/10.1063/1.1445425
https://doi.org/10.1063/1.1445425
Autor:
P. W. Fontana, C. S. Chiang, J. S. Sarff, Neal Crocker, B. E. Chapman, Darren Craig, T. M. Biewer, Stewart C. Prager, Prabal K. Chattopadhyay, G. Fiksel, D.J. Den Hartog
Publikováno v:
Physics of Plasmas. 7:3491-3494
Auxiliary edge current drive is routinely applied in the Madison Symmetric Torus [R. N. Dexter, D. W. Kerst, T. W. Lovell et al., Fusion Technol. 19, 131 (1991)] with the goal of modifying the parallel current profile to reduce current-driven magneti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::698bf2bcab0bc1210e55a3cec0b49aa0
https://doi.org/10.1063/1.1287913
https://doi.org/10.1063/1.1287913
Publikováno v:
Physical Review Letters. 85:566-569
The fluctuation-induced dynamov x bhas been investigated by direct measurement of v and b in the edge of a reversed-field pinch and is found to be significant in balancing Ohm's law. The velocity fluctuations producing the dynamo emf have poloidal mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c8b0b50988082d5bb3e0a9ad1a7987e
https://doi.org/10.1103/physrevlett.85.566
https://doi.org/10.1103/physrevlett.85.566
Autor:
Stewart C. Prager, P. W. Fontana, J. T. Chapman, G. Fiksel, Darren Craig, J. S. Sarff, D.J. Den Hartog
Publikováno v:
Physics of Plasmas. 6:1813-1821
Plasma flow velocity fluctuations have been directly measured in the high temperature magnetically confined plasma in the Madison Symmetric Torus (MST) Reversed-Field Pinch (RFP). These measurements show that the flow velocity fluctuations are correl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b2a2e1d0d94f4f70ace71e041d7b578
https://doi.org/10.1063/1.873439
https://doi.org/10.1063/1.873439
Publikováno v:
Review of Scientific Instruments. 69:2024-2026
A novel insertable probe for local measurements of equilibrium and fluctuating plasma ion flow velocity and temperature via Doppler spectroscopy is described. Optical radiation is collected by two fused silica fiber optic bundles with perpendicular v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::634c7be348f0717823ef2ba0a081a35a
https://doi.org/10.1063/1.1148892
https://doi.org/10.1063/1.1148892
Publikováno v:
AIP Conference Proceedings.
A new experiment seeks to examine equilibrium, stability, and confinement properties of toroidal electron plasmas. Electron plasmas with density about 3×106 cm−3 are trapped for ∼100 μs in a “partially” toroidal (or “C”-shaped) trap (B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8869dfd7f2848f46862562f455b0df3e
https://doi.org/10.1063/1.1454346
https://doi.org/10.1063/1.1454346
Autor:
Stewart C. Prager, J. C. Reardon, D. J. Holly, P. W. Fontana, D. L. Brower, S. Castillo, C. S. Chiang, J. S. Sarff, B. E. Chapman, Cary Forest, D.J. Den Hartog, Jay Anderson, T. M. Biewer, Prabal K. Chattopadhyay, N. E. Lanier, A. K. Hansen, Darren Craig, Stefan Gerhardt, G. Fiksel, Y. Jiang
Publikováno v:
Scopus-Elsevier
Improved confinement has been achieved in the MST through control of the poloidal electric field, but it is now known that the improvement has been limited by bursts of an edge-resonant instability. Through refined poloidal electric field control, pl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdcfa465be2e03c8a697c02c0555418d
https://doi.org/10.1103/physrevlett.87.205001
https://doi.org/10.1103/physrevlett.87.205001