Výsledky vyhledávání

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Testing the conservative character of particle simulations: I. Canonical and noncanonical guiding center model in Boozer coordinates

Autor: Bierwage, Andreas, White, Roscoe B., Matsuyama, Akinobu

Publikováno v: Phys. Plasmas 29, 113905 (2022)

The guiding center (GC) Lagrangian in Boozer coordinates for toroidally confined plasmas can be cast into canonical form by eliminating a term containing the covariant component $B_{\Psi_{\rm P}}$ of the magnetic field vector with respect to the polo

Externí odkaz: http://arxiv.org/abs/2205.11280

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On the effect of beating during nonlinear frequency chirping

Autor: Bierwage, Andreas, White, Roscoe B., Duarte, Vinícius N.

Publikováno v: Plasma and Fusion Research, Volume 16, 1403087 (2021), p.1-61

Spectral analyses of energetic particle (EP) driven bursts of MHD fluctuations in magnetically confined plasmas often exhibit multiple simultaneous chirps. While the superposition of oscillations at multiple frequencies necessarily causes beating in

Externí odkaz: http://arxiv.org/abs/2103.12561

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Effect of Noise on the Standard Mapping

Autor: Karney, Charles F. F., Rechester, Alexander B., White, Roscoe B.

Publikováno v: Physica 4D(3), 425-438 (Mar. 1982)

The effect of a small amount of noise on the standard mapping is considered. Whenever the standard mapping possesses accelerator modes (where the action increases approximately linearly with time), the diffusion coefficient contains a term proportion

Externí odkaz: http://arxiv.org/abs/nlin/0501021

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Akademický článek

The impact of food prices on the welfare of households in South Africa

Autor: Roscoe B. van Wyk, Cliff S. Dlamini

Publikováno v: South African Journal of Economic and Management Sciences, Vol 21, Iss 1, Pp e1-e9 (2018)

Background and setting: The global food price surge of 2006 to 2008 has negatively impacted South African households. Rising food prices adversely affect food security in South Africa. The ever-increasing prices for food commodities and lack of acces

Externí odkaz: https://doaj.org/article/fdb3e167d47b4458926e278ab4ce633e

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Particle resonances in toroidal fusion devices (and implications for 'alpha channeling')

Autor: Bierwage, Andreas, Roscoe, B. White (PPPL)

Resonant interaction between fast ions and electromagnetic modes has been considered as a means to remove partially slowed-down alpha particles (helium ash) from a burning plasma, which is one aspect of so-called “alpha channeling”. This motivate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=jairo_______::30ad6a7aff07e59cbf98414d17addf9d
https://repo.qst.go.jp/records/82851

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