Results 11 to 20 of about 566,131 (69)

Novel internal measurements of ion cyclotron frequency range fast-ion driven modes [PDF]

, 2022
Novel internal measurements and analysis of ion cyclotron frequency range fast-ion driven modes in DIII-D are presented. Observations, including internal density fluctuation (˜n) measurements obtained via Doppler backscattering, are presented for modes ...
Dendy, R. O., Crocker, N. A., Zalzali, A., Pinsker, R. I., Lestz, J. B., Peebles, W. A., Wang, G., Heidbrink, W. W., Hong, R., Zeng, L., Tang, S. X., Barada, K. K., Carter, T. A., DeGrandchamp, G. H., Thome, K. E., Belova, E. V., Rhodes, T. L., E.V. Belova, N.A. Crocker, S.X. Tang, R. Hong, L. Zeng, G.H. DeGrandchamp, R.O. Dendy, K.K. Barada, K.E. Thome, W.A. Peebles, G. Wang, T.L. Rhodes, J.B. Lestz, A. Zalzali, T.A. Carter, R.I. Pinsker, W.W. Heidbrink   +33 more
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Velocity-space sensitivity and inversions of synthetic ion cyclotron emission [PDF]

, 2023
This paper introduces a new model to find the velocity-space location of energetic ions generating ion cyclotron emission (ICE) in plasmas. ICE is thought to be generated due to inverted gradients in the v⊥ direction of the velocity distribution function
Dendy, R., Järleblad, H., Reman, B. C. G., Valentini, A., Dendy, R. O., Schmidt, B., Moseev, D. ; https://orcid.org/, Rud, M., Ochoukov, R., Moseev, D., Schmidt, B. S., Salewski, M., Reman, B. C.G., Dong, Y., Reman, B., Ochoukov, R. ; https://orcid.org/   +15 more
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Laboratory astrophysics : investigation of planetary and astrophysical maser emission [PDF]

, 2013
This paper describes a model for cyclotron maser emission applicable to planetary auroral radio emission, the stars UV Ceti and CU Virginus, blazar jets and astrophysical shocks.
Ronald K, Phelps, A.D.R., Phelps, Alan, Kellett BJ, McConville SL, Phelps ADR, Speirs DC, Ronald, Kevin, McConville, S.L., Cross, Adrian, Cairns RA, Speirs, D.C., Cairns, R Alan, Cross, A.W., Cross AW, Kellett, Barry, McConville, Sandra, Cairns, R.A., Bingham, Robert, Vorgul I, Vorgul, Irena, Kellett, B.J., Ronald, K., Bingham R, Spiers DC, Vorgul, I., Speirs, David, Bingham, R., K. Ronald, B. J. Kellett, R. Bingham, A. W. Cross, S. L. McConville, I. Vorgul, D. C. Speirs, R. A. Cairns, A. D. R. Phelps   +36 more
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Destabilization of Fast Magnetoacoustic Waves by Circulating Energetic Ions in Toroidal Plasmas [PDF]

, 2003
An instability of fast magnetoacoustic waves (FMW) driven by circulating energetic ions in axisymmetric toroidal plasmas and characterized by the frequencies below the ion gyrofrequency is considered.
Kolesnichenko, Ya. I., White, R. B., V. S. Belikov, Ya. I. Kolesnichenko, R. B. White, Belikov, V.S.   +5 more
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Collisional effects on the drift-cyclotron instability [PDF]

, 1976
The drift-cyclotron instability in a weakly collisional plasma is considered including temperature perturbations. Collisions are described by a model Fokker-Planck equations. The growth rate of the instability is obtained analytically.Peer Reviewedhttp://
Shukla, P. K., Yu, Ming-Young, Ong, Rudi Siong Bwee   +2 more
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Alfven cyclotron instability and ion cyclotron emission [PDF]

, 1995
Two-dimensional solutions of compressional Alfven eigenmodes (CAE) are studied in the cold plasma approximation. For finite inverse aspect ratio tokamak plasmas the two-dimensional eigenmode envelope is localized at the low magnetic field side with the ...
Cheng, C. Z., Gorelenkov, N. N.
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Overview of plasma emissions observed in the ion cyclotron frequency range on ASDEX upgrade

, 2023
In this work we present an overview of ion cyclotron emission (ICE) signals observed on ASDEX Upgrade (AUG) with a B-dot probe array [1]. The array was recently augmented with an 8 channel digitizer (up to 250 MHz sampling rate) that makes it possible to
Faugel, H., Dendy, R., Dreval, M., McClements, K. G., Kappatou, A., Schneider, P., Ochoukov, R., Kazakov, Ye, Bobkov, V., Moseev, D., Salewski, M., Weiland, M., Bilato, R.   +12 more
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Quantifying fusion born ion populations in magnetically confined plasmas using ion cyclotron emission [PDF]

, 2017
Ion cyclotron emission (ICE) offers unique promise as a diagnostic of the fusion born alpha-particle population in magnetically confined plasmas. Pioneering observations from JET and TFTR found that ICE intensity PICE scales approximately linearly with ...
Cook, James William S., Dendy, R. O., Carbajal, L., S. C. Chapman, L. Carbajal, J. W. S. Cook, R. O. Dendy, Chapman, Sandra C.   +7 more
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3D WKB solution for fast magnetoacoustic wave behaviour around an X-line [PDF]

, 2016
Context - We study the propagation of a fast magnetoacoustic wave in a 3D magnetic field created from two magnetic dipoles. The magnetic topology contains an X-line.
G. J. J. Botha, J. A. McLaughlin, D. L. Spoors, Botha, Gert, McLaughlin, James, Regnier, Stephane, S. Régnier, Spoors, David   +7 more
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High-frequency Alfven waves in multi-ion coronal plasma : observational implications [PDF]

, 2005
We investigate the effects of high-frequency (of order ion gyrofrequency) Alfvén and ion-cyclotron waves on ion emission lines by studying the dispersion of these waves in a multi-ion coronal plasma.
Ofman, L. (Leon), Davila, J. M. (Joseph M.), Viñas, A.-F., Nakariakov, V. M. (Valery M.)   +3 more
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