Fig 10 - uploaded by Andrey V. Anikeev
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Results of diamagnetic measurements (a) before (shot 176, June 11, 1996) and (b) after (shot 314, May 30, 1997) the optimization of the NBI system.
Source publication
Results are presented from experiments on the production of a dense hot-ion plasma in a gasdynamic trap. Optimization of the plasma-heating conditions permitted obtaining an energy content of 600-800 J in the fast-ion population at a density of about 10(13) cm(-3) and an average energy of 5-8 keV. The value of the plasma beta (the ratio of the plas...
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An interpretation of high-frequency (20--2400 Hz) fast quasi-periodic oscillations of magnetars in terms of an equivalent electric circuit is given. Observed periods and the very high quality of quasi-periodic oscillations are explained. The oscillation source is represented as a hot electron-positron plasma in a `trapped fireball', a system of cur...
Citations
The evolution of open traps brought them from simple solenoids to highly sophisticated and huge tandem mirrors with quadrupole magnetic stabilizers. They tried to compete with toroidal devices using ambipolar confinement and thermal barriers, but were too late and failed, and are almost extinct. A side branch of open traps went for simplicity and good fast-ion confinement inherent in axially symmetric mirrors. Since simplicity means lower cost of construction and servicing, and lower engineering and materials demands, such type of traps might still have an edge. Axially symmetric mirrors at the Budker Institute of Nuclear Physics in Novosibirsk currently represent the frontline of mirror research. We discuss recent experimental results from the multiple-mirror trap, GOL-3 [1], and the gas-dynamic trap, GDT [2]. The next step in this line of research is the GDMT program that will combine the GDT-style fast-ion-dominated central mirror with multiple-mirror end plugs. This superconducting device will be modular and built in stages. The first stage, GDMT-T, will be based on 5m, 7T superconducting solenoid (multiple-mirror plug of the full device). Its 3-year scientific program is oriented primarily on PMI studies.
