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Herbert L Berk

Researcher at University of Texas at Austin

Publications -  227
Citations -  8052

Herbert L Berk is an academic researcher from University of Texas at Austin. The author has contributed to research in topics: Instability & Plasma. The author has an hindex of 50, co-authored 227 publications receiving 7631 citations. Previous affiliations of Herbert L Berk include Lawrence Livermore National Laboratory & General Atomics.

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Universal Eigenmode in a Strongly Sheared Magnetic Field

TL;DR: In this paper, it was shown that in the presence of large shear, an unstable universal eigenmode exists and the criterion for the stabilization of this mode for long wavelengths was defined.
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The HAGIS self-consistent nonlinear wave-particle interaction model

TL;DR: In this article, the problem of modeling the selfconsistent interaction of an energetic particle ensemble with a wave spectrum specific to magnetically confined plasmas in a torus is discussed.
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Theoretical Interpretation of Alfvén Cascades in Tokamaks with Nonmonotonic q Profiles

TL;DR: Alfv\'en spectra in a reversed-shear tokamak plasma with a population of energetic ions exhibit a quasiperiodic pattern of primarily upward frequency sweeping as mentioned in this paper.
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Spontaneous hole-clump pair creation in weakly unstable plasmas

TL;DR: In this article, a numerical simulation of a kinetic instability near threshold shows how a hole and clump spontaneously appear in the particle distribution function and support a pair of Bernstein, Greene, Kruskal (BGK) nonlinear waves that last much longer than the inverse linear damping rate while they are upshifting and downshifting in frequency.