Experimental evidence of the plasma flow suppression by the helical magnetic mirror is presented. Reported experiments were done during the first plasma campaign in the SMOLA helical mirror device at self-consistent floating potentials of all in-vessel electrodes and at minimal magnetic fields suitable for confinement regime. The experimental results are consistent with two main theory predictions for the helical mirror confinement: a reduction of the axial plasma flow and the inward particle pinch. The helical mirror technology can dramatically improve fusion reactor prospects of open magnetic configurations.
A multiple-mirror confinement is an alternative concept in the fusion energy development that improves the particle and energy confinement times in open traps (linear magnetic systems). The paper discusses the development progress of the GOL-NB multiple-mirror experiment that was recently commissioned in BINP. The reference description of the GOL-NB hardware is presented. Properties of a low-temperature start plasma are discussed. The first results from test experiments with injection of one 25 keV neutral beam are shown. Methods of plasma stabilization in the non-min-B configuration are discussed. In general, the on-going commissioning progress and results of the preliminary experiments are modestly optimistic for the expected device performance.
From June 1 8 to 24, 1979 at VNIIM comparisons were made of He-Ne/lZ7Iz lasers belonging to VNIIM* and BIPM.Frequency separations of the hyperfine components d, e, f, g of the R( 127) line of iodine were measured and investigations carried out of the influence of amplitude modulation and the pressure of iodine, and of the power shifts. The frequency separations of d, e, f, g components were also measured for the VNIIM stabilized laser, using a BIPM servo loop. Lasers VNIIM7, VNIIMI, BIPM3 and BIPM6 were used.
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