27 research outputs found

    Zur normalen und pathologischen Morphologie der Coronararterien

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    Morphologic and regulatory aspects of prostatic function

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    Analysis of damping rate measurements of toroidal Alfven eigenmodes as a function of n: part II (vol 52, 023014, 2012)

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    Study of fast-ion transport induced by fishbones on JET

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    The impact of fishbone oscillations onto a confined fast-ion population is simulated for a JET plasma and benchmarked against experiment quantitatively with the help of neutron rate measurements. The transient drops in volume integrated neutron emission are found to be mainly caused by the spatial redistribution of the (neutral beam injected) fast-ion population confined in the plasma rather than by fast-ion loss. The simulations yield a quadratic dependence of the neutron drop on the fishbone amplitude. It is found that the simulations are able to correctly reproduce the magnitude of the experimentally observed drop in volume integrated neutron emission to within a factor 2. Furthermore, frequency chirping is found to be important. Omitting the fishbone frequency chirp in the simulations reduces the magnitude of the neutron rate drop (and hence fast-ion redistribution) to about half its original value

    Non-resonant magnetic braking on JET and TEXTOR

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    The non-resonant magnetic braking effect induced by a non-axisymmetric magnetic perturbation is investigated on JET and TEXTOR. The collisionality dependence of the torque induced by the n = 1, where n is the toroidal mode number, magnetic perturbation generated by the error field correction coils on JET is observed. The observed torque is located mainly in the plasma core (normalized radius

    Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas

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    Wave-particle resonances and redistribution/losses of fast ions in tokamaks

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    High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET He-4 plasmas

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    Fast-ion distributions from third harmonic ICRF heating studied with neutron emission spectroscopy

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    Ubiquity of non-diffusive momentum transport in JET H-modes

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