Zobrazeno 1 - 10
of 119
pro vyhledávání: '"N. Rynn"'
Publikováno v:
Ion Acceleration in the Magnetosphere and Ionosphere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65067eb71ede9aee312c9681982ddc38
https://doi.org/10.1029/gm038p0245
https://doi.org/10.1029/gm038p0245
Publikováno v:
Review of Scientific Instruments. 67:3117-3121
An extension to laser‐induced fluorescence is presented. The new technique, called intermodulated optical tagging, can be used to measure multidimensional velocity distribution functions directly as well as to tag ions in two velocity and three spa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::092aeb5403888075d3ee5cfd459cb7ad
https://doi.org/10.1063/1.1147437
https://doi.org/10.1063/1.1147437
Publikováno v:
Sheehan, DP; McWilliams, R; & Rynn, N. (1993). Adjustable levels of strong turbulence in a positive/negative ion plasma. Physics of Fluids B, 5(5), 1523-1528. doi: 10.1063/1.860892. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/6kn5j0mf
Positive/negative ion plasmas, composed of Ba+, SF 6-, and residual electrons, were observed to display characteristics of strong turbulence. Experiments on the UCI Q machine linked the presence of negative ions (and the depletion of electrons) with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::566b6f20b320638fc69efb7c796a6628
https://doi.org/10.1063/1.860892
https://doi.org/10.1063/1.860892
Autor:
P. J. Paris, N. Rynn
Publikováno v:
Review of Scientific Instruments. 61:1095-1100
The development of a new Q‐plasma source is described. Emphasis is given to the novel parts of the system which have been designed to produce long term, constant density plasmas with low fluctuation levels, as well as long machine operation time. R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::628b354def85c2aeacc0f0edf04e862d
https://doi.org/10.1063/1.1141429
https://doi.org/10.1063/1.1141429
Publikováno v:
Physics of Plasmas. 2:4369-4371
In a first step towards generating an electron-positron plasma, a proof-of-principle experiment is reported in which externally injected slow positrons and electrons are trapped in a magnetic mirror configuration by electron (positron) cyclotron reso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80f6113f799c06e5fb34a18b8df92927
https://doi.org/10.1063/1.871466
https://doi.org/10.1063/1.871466
Publikováno v:
Bowles, J; McWilliams, R; & Rynn, N. (1992). Direct measurement of velocity-space transport in a fully ionized plasma. Physical Review Letters, 68(8), 1144-1147. doi: 10.1103/PhysRevLett.68.1144. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/7pc8g12t
Direct measurements of velocity-space transport coefficients, which may be interpreted as the Fokker-Planck coefficients, in the direction of the confining magnetic field are reported. The measurements were made using the techniques of laser-induced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3bb6a6e3eb0996506e79db0a5cc96a3
http://www.escholarship.org/uc/item/7pc8g12t
http://www.escholarship.org/uc/item/7pc8g12t
Publikováno v:
Bowles, J; McWilliams, R; & Rynn, N. (1992). Velocity Space Diffusion in Q-Machine Plasmas. IEEE Transactions on Plasma Science, 20(6), 651-654. doi: 10.1109/27.199507. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/6z85270d
We report measurements of test particle diffusion in velocity space. Test particles are created and examined using the method of optical tagging, an extension of laser-induced fluorescence. In quiet plasma conditions (δn/n ≤ 0.01%) results show di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::726867ac2c542b5d9353395013443f3e
http://www.escholarship.org/uc/item/6z85270d
http://www.escholarship.org/uc/item/6z85270d
Publikováno v:
Journal of Plasma Physics. 19:237-252
Ion-cyclotron waves are excited by cesium and potassium ion beams in cesium and potassium Q-machine plasmas. The ion beams are injected along the magnetic field with care to avoid beam transverse velocities. The observed ion-cyclotron mode frequencie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e213eb8253cab660729c26e3dd337a95
https://doi.org/10.1017/s0022377800023217
https://doi.org/10.1017/s0022377800023217
Publikováno v:
Journal of Plasma Physics. 15:175-195
The theory of ion heating in a Q-machine Barium plasma by the electrostatic ion cyclotron instability is considered in some detail. Linear and quasi-linear theories are considered. The effect on resistivity of the instability is also considered. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::410973dac3169f2309af8ffd8b7e9d52
https://doi.org/10.1017/s0022377800019723
https://doi.org/10.1017/s0022377800019723
Publikováno v:
Plasma Physics and Controlled Fusion. 31:1569-1578
Chaos in the context of wave-particle interactions has been shown to produce particle acceleration and nonresonant wave absorption. High resolution plasma diagnostics involving laser-induced fluorescence and optical tagging are applied to test the ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::124b58fa64a0de8273f7454d3811ec0e
https://doi.org/10.1088/0741-3335/31/10/007
https://doi.org/10.1088/0741-3335/31/10/007