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Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 7, Iss 4, p 044402 (2004)
Stable, coherent, longitudinal oscillations have been observed in several accelerators. Within the context of perturbation theory, the beam parameters and machine impedance often suggest these oscillations should be Landau damped. When nonlinear effe
Externí odkaz:
https://doaj.org/article/3edfd7bbc6f949da956b2313cff82504
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 5, Iss 2, p 024201 (2002)
A self-consistent theory of periodic hole structures in coasting beams in synchrotrons and storage rings is presented, extending the theory on localized holes. The analysis reveals new intrinsic nonlinear modes which owe their existence to a deficien
Externí odkaz:
https://doaj.org/article/7700a79c9fa04c20accd99e275eeb178
Autor:
H. Schamel, P. V. Akimov
Publikováno v:
Journal of Applied Physics. 92:1690-1698
An analytical theory is given for the space-charge-limited (SCL) current of an electron diode in the presence of collisions. It extends the improved SCL current formula, which already takes into account the effect of nonzero electron injection veloci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ef4a97ee9ed38bc7850db72995cd6dc
https://doi.org/10.1063/1.1490616
https://doi.org/10.1063/1.1490616
Autor:
H. Schamel, A. R. Karimov
Publikováno v:
Physics of Plasmas. 9:811-815
The initial value problem of an ideal, compressible fluid is investigated in three space dimensions (3D). Starting from a situation where the inertia terms dominate over the force terms in Euler’s equation we explore by means of the Lagrangian flow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::618161a28f20a0b11cb31117b3495811
https://doi.org/10.1063/1.1447255
https://doi.org/10.1063/1.1447255
Autor:
H. Schamel, A. R. Karimov
Publikováno v:
Physics of Plasmas. 7:2790-2797
The initial value problem of an ideal, compressible medium is studied in two-dimensional geometry by the Lagrangian method. It is shown that the nonlinearity of a convection-driven flow can lead to singularities at finite time in density and vorticit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ffb5fd26228e8f6efb3bbd23e88fe52
https://doi.org/10.1063/1.874129
https://doi.org/10.1063/1.874129
Autor:
J. Korn, H. Schamel
Publikováno v:
Journal of Plasma Physics. 56:339-359
New dissipative structural equilibria of the Vlasov-Fokker-Planck-Poisson system in a current-carrying plasma with mobile ions are presented. The dynamical evolution towards these final equilibrium states is explored. First consequences for the paral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::889c485876e1d85ad4045998fcd3d448
https://doi.org/10.1017/s0022377800019292
https://doi.org/10.1017/s0022377800019292
Publikováno v:
Physica Scripta. :63-68
It is shown that intermittent phasespace structures such as electron holes resist weak collisions and hence provide new dissipative equilibria far away from the thermodynamic one. The associated anomalous plasma transport is explored for a current ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e364bc83aedb6d3b4ca5c8e6e1b4a8b
https://doi.org/10.1088/0031-8949/1996/t63/009
https://doi.org/10.1088/0031-8949/1996/t63/009
Autor:
J. Maier, D. Dubbers, C.-D. Schönwiese, G. Kramer, P. Kafka, H. Rauch, A. Mangini, H. Rechenberg, H. Schamel, P. Waloschek, G. Raffelt
Publikováno v:
Physik Journal. 51:35-38
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f0964069db32f469dfe4c2638c74345
https://doi.org/10.1002/phbl.19950510108
https://doi.org/10.1002/phbl.19950510108
Autor:
G. Hübner, H. Schamel
Publikováno v:
Transport Theory and Statistical Physics. 23:971-1000
Transport and relaxation phenomena far away from local thermodynamic equilibrium are studied in the very long mean-free-path regime. A multiple timescale analysis of plasma kinetic equations with an extended Landau collision operator is performed up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcbe6d598dec337ad456f1a769ffa56f
https://doi.org/10.1080/00411459408203536
https://doi.org/10.1080/00411459408203536