Zobrazeno 1 - 10
of 63
pro vyhledávání: '"J. H. Malmberg"'
Publikováno v:
Review of Scientific Instruments. 67:2157-2162
A warm beam is produced by passing a cold electron beam through a system of three closely spaced parallel grids. The beam and the grid structure are immersed in a magnetic field. The middle grid is biased at a large positive potential, and the result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b01026c564787cc3d0e4fbbe8897baba
https://doi.org/10.1063/1.1147030
https://doi.org/10.1063/1.1147030
Publikováno v:
Physics of Plasmas. 3:1250-1258
Plasma temperatures in the range 25 to 2×106 K have been measured using a cryogenic, ultra‐high vacuum, pure‐electron plasma trap. The rate ν at which the temperatures parallel and perpendicular to the applied magnetic field relax to a common v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95f0999c370b54b851135351824c3a5e
https://doi.org/10.1063/1.871749
https://doi.org/10.1063/1.871749
Autor:
J H Malmberg
Publikováno v:
Plasma Physics and Controlled Fusion. 34:1767-1774
Two examples of recent research using pure electron plasmas are discussed. Various phenomena of two-dimensional fluid dynamics were investigated including vortex dynamics, vortex merger, shear-induced instability, and the decay of turbulence. In a se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f531984f52f8ae76fbe53dda364e565
https://doi.org/10.1088/0741-3335/34/13/004
https://doi.org/10.1088/0741-3335/34/13/004
Publikováno v:
Physics of Fluids B: Plasma Physics. 4:3432-3439
A technique is presented for measuring the parallel energy distribution of magnetically confined electrons in a cylindrically symmetric pure electron plasma. In essence, the technique measures how many electrons are energetic enough to escape past ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a568a062790c91b99bb7708d61fa2ca7
https://doi.org/10.1063/1.860399
https://doi.org/10.1063/1.860399
Publikováno v:
Physical Review Letters. 68:317-320
The rate at which the temperatures parallel and perpendicular to a magnetic field relax to a common value has been measured in a pure electron plasma. This rate was measured over the temperature range 28 to ${10}^{4}$ K and for magnetic fields in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beac190083fd49cc45188cce708f68e1
https://doi.org/10.1103/physrevlett.68.317
https://doi.org/10.1103/physrevlett.68.317
Publikováno v:
Physics of Fluids B: Plasma Physics. 3:2747-2757
The use of the random phase approximation in quasilinear theory has been controversial for some time. For the bump‐on‐tail instability this approximation leads to the neglect of mode coupling effects mediated by the resonant particles. Recently,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6de5d826ecf935a01d0c2efd65bb604d
https://doi.org/10.1063/1.859911
https://doi.org/10.1063/1.859911
This document gives an overview of the scientific results obtained under the DOE grant, and references the journal articles which give more complete descriptions of the various topics. Recently, the research has been focused on 2-dimensional vortices
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4905913b5c4f0dd97a38596ae6dfb78f
https://doi.org/10.2172/463660
https://doi.org/10.2172/463660
The AASERT supplement N00014-93-1-0824 provided partial support for three graduate students. The students performed research on an existing pure electron plasma containment apparatus, on a new laser diagnosed ion plasma apparatus, and on a new camera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bbe23e7d3e43e1af66825bf2a94d200
https://doi.org/10.21236/ada310481
https://doi.org/10.21236/ada310481
Autor:
J. H. Malmberg, J. D. Moody
Publikováno v:
Physical review letters. 69(25)
The collective free expansion of a magnetized pure electron plasma column along the confining axial magnetic field is experimentally and theoretically investigated. A new hydrodynamic theory for nonlinear plasma wave evolution in a bounded cylinder i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fde296a8637781d7d4705af798ad4649
https://pubmed.ncbi.nlm.nih.gov/10046875
https://pubmed.ncbi.nlm.nih.gov/10046875
Publikováno v:
Physical review letters. 67(5)
Magnetically confined columns of electrons are excellent experimental realizations of extended two-dimensional vortices in an inviscid fluid. Here, we consider two nearly identical vortices orbiting around one another inside a cylindrical wall. The v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6745972d83e77b719d1f3f8ef7112fa
https://pubmed.ncbi.nlm.nih.gov/10044936
https://pubmed.ncbi.nlm.nih.gov/10044936