Zobrazeno 1 - 10
of 55
pro vyhledávání: '"R. E. Aamodt"'
Publikováno v:
Physics of Plasmas. 7:1417-1420
To conserve transformer volt-seconds, power to toroidal magnetic field coils, and to trigger an early transition into high confinement (H) mode, where the requirements on auxiliary power are lower, rf heating during the B-field ramp phase of ignition
Autor:
R. E. Aamodt
Publikováno v:
Physics of Plasmas. 1:6-12
The geometric optics approximation is the commonly used description for wave propagation in media where the usual local Wentzel–Kramers–Brillouin (WKB) condition is satisfied. However, diffraction phenomena can give important corrections to a ray
Autor:
R. E. Aamodt, D. A. Russell
Publikováno v:
Review of Scientific Instruments. 61:3211-3213
Motivated by the possibility of diagnosing alpha particles in a burning fusion plasma by scattering radiation off of the fluctuations that they induce, we model the linear Maxwell–Vlasov theory of the scattering in a homogeneous plasma consisting o
Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c70b52821fa58de5a3332ede0e5b4805
https://doi.org/10.2172/6601972
https://doi.org/10.2172/6601972
Autor:
M. C. Vella, R. E. Aamodt
Publikováno v:
Physical Review Letters. 39:1273-1276
The kinetic treatment of the ponderomotive force concept is found from nonresonant quasilinear theory for waves with spatially dependent amplitude. In general, the ponderomotive effect appears as a velocity-space diffusion term, not just as a force.
Autor:
R. E. Aamodt, B. Hafizi
Publikováno v:
Physical Review A. 29:2656-2668
Single particle trajectories in a free electron laser device consisting of a linear periodic wiggler superimposed on a strong uniform axial guide field are examined by a formalism suitable for perturbation analysis and adaptable to wigglers of arbitr
Autor:
R. E. Aamodt
Publikováno v:
Physical Review A. 28:2895-2899
In studies of free electron lasers (FEL) systems, in which emission gain is induced through wiggler magnetic field modulation of the electron motion, detailed knowledge of the electron orbits is necessary in order to evaluate the critical features of
Autor:
C. S. Liu, R. E. Aamodt
Publikováno v:
Physical Review Letters. 36:95-98
We examine the parametric coupling of the negative-energy drift-cone mode near the ion-cyclotron frequency with lower-frequency positive-energy modes through the electronic nonlinearity. This parametric process is shown to be stabilized by azimuthal
Publikováno v:
Fusion Technology. 12:230-237
Autor:
R E Aamodt
Publikováno v:
Plasma Physics. 9:573-584
The dispersion relation for longitudinal oscillations in a system with a loss-cone velocity space distribution function is studied. For wavelengths short compared to the ion Larmor radius or frequencies high compared to the ion cyclotron frequencies,