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Your search keyword '"McDevitt, C J"' showing total 3 results
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3 results on '"McDevitt, C J"'

1. Self-similar structure and experimental signatures of suprathermal ion distribution in inertial confinement fusion implosions

Author

Kagan, Grigory, Svyatskiy, D., Rinderknecht, H. G., Rosenberg, M. J., Zylstra, A. B., Huang, C. -K., and McDevitt, C. J.

Subjects
Physics - Plasma Physics
Abstract

The distribution function of suprathermal ions is found to be self-similar under conditions relevant to inertial confinement fusion hot-spots. By utilizing this feature, interference between the hydro-instabilities and kinetic effects is for the first time assessed quantitatively to find that the instabilities substantially aggravate the fusion reactivity reduction. The ion tail depletion is also shown to lower the experimentally inferred ion temperature, a novel kinetic effect that may explain the discrepancy between the exploding pusher experiments and rad-hydro simulations and contribute to the observation that temperature inferred from DD reaction products is lower than from DT at National Ignition Facility., Comment: Revised version accepted for publication in PRL. "Copyright (2015) by the American Physical Society."

Published
2015
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2. Kinetic studies of ICF implosions

Author

Kagan, Grigory, primary, Herrmann, H. W., additional, Kim, Y.-H., additional, Schmitt, M. J., additional, Hakel, P., additional, Hsu, S. C., additional, Hoffman, N. M., additional, Svyatsky, D., additional, Baalrud, S. D., additional, Daligault, J. O., additional, Sio, H., additional, Zylstra, A. B., additional, Rosenberg, M. J., additional, Rinderknecht, H. G., additional, Johnson, M. Gatu, additional, Frenje, J. A., additional, Séguin, F. H., additional, Li, C. K., additional, Petrasso, R. D., additional, Albright, B. J., additional, Taitano, W., additional, Kyrala, G.A., additional, Bradley, P. A., additional, Huang, C.-K., additional, McDevitt, C. J., additional, Chacon, L., additional, Srinivasan, B., additional, McEvoy, A. M., additional, Joshi, T. R., additional, and Adams, C. S., additional

Published
2016
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3. Transport of parallel momentum by collisionless drift wave turbulence

Author

Diamond, P. H., Mcdevitt, C. J., Gurcan, O. E., Hahm, T. S., Volker Naulin, and Benkadda, S.

Subjects
Physics, Momentum diffusion, Momentum, Classical mechanics, Total angular momentum quantum number, Momentum transfer, Angular momentum of light, Angular momentum coupling, Rotational transition, Orbital angular momentum of light
Abstract

This paper presents a novel, unified approach to the theory of turbulent transport of parallel momentum by collisionless drift waves. The physics of resonant and non‐resonant off‐diagonal contributions to the momentum flux is emphasized, and collisionless momentum exchange between waves and particles is accounted for. Two related momentum conservation theorems are derived. These relate the resonant particle momentum flux, the wave momentum flux and the refractive force. A perturbative calculation, in the spirit of Chapman‐Enskog theory, is used to obtain the wave momentum flux, which contributes significantly to the residual stress. A general equation for mean κ∥(〈κ∥〉) is derived and used to develop a generalized theory of symmetry breaking. The resonant particle momentum flux is calculated, and pinch and residual stress effects are identified. The implications of the theory for intrinsic rotation and momentum transport bifurcations are discussed.

Published
2008

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