Investigations of Thermonuclear Magnetized Plasma Generation in the Magnetic Implosion System Mago

Possibility of low-dense magnetized DT plasma ignition threshold achievement in a MAGO system

“…If plasma lifetime in the chamber (with temperature ~0.4 keV) is ~10~5 s, then a ~10 6 cm/s compression rate is acceptable, and the characteristic time involved in the Lawson criterion at the minimal compression radius of -1 cm will be r ~ 10~6 s, which was assumed above. If the time of existence of the above temperature is comparable with experimentally measured (Buyko et al 1993) duration of neutron pulse from the chamber (~10~6 s with effective mean ion temperature ~2 keV), then needed compression rate as well as needed compression degree will be an order of magnitude higher. In principle, one may expect that the amount of plasma admixtures can be reduced.…”

“…However, experiments close to ignition can be performed at considerably lower energies. As it was mentioned in Buyko et al (1983), the MAGO plasma chamber operates not only at a cavity radius of 10 cm, but also at ~2 times and even -3 times less. In such a case, early experiments on plasma compression can be conducted with a similarly reduced system whose m parameter is 2 or 3 times lower than it is needed for the Lawson criterion to be satisfied but needed energy is 10-30 times lower than in a full-scale system.…”

“…Additional articles suggested and experimentally implemented a new technique of magnetized DT plasma heating using a special plasma chamber MAGO (Buyko et al 1983(Buyko et al , 1993. In this chamber a circular contracting-expanding nozzle is used to accelerate magnetized plasma up to ~10 8 cm/s velocities, which results in plasma heating up to kiloelectronvolt range temperatures by collisionless shock waves (Sagdeyev 1964;Garanin & Golubev 1985).…”

“…In this chamber a circular contracting-expanding nozzle is used to accelerate magnetized plasma up to ~10 8 cm/s velocities, which results in plasma heating up to kiloelectronvolt range temperatures by collisionless shock waves (Sagdeyev 1964;Garanin & Golubev 1985). In the experiments where the MAGO chamber is energized from explosive magnetic generators (EMG), at 10-cm chamber cavity radius the neutron output of -4-10 13 DT neutrons was obtained (Buyko et al 1993). In the concept under consideration, the increase in magnetized plasma temperature and density to achieve the Lawson criterion is suggested using plasma compression (Buyko et al 1983(Buyko et al , 1993.…”

“…In the experiments where the MAGO chamber is energized from explosive magnetic generators (EMG), at 10-cm chamber cavity radius the neutron output of -4-10 13 DT neutrons was obtained (Buyko et al 1993). In the concept under consideration, the increase in magnetized plasma temperature and density to achieve the Lawson criterion is suggested using plasma compression (Buyko et al 1983(Buyko et al , 1993. Hereinafter we will consider some techniques of adiabatic plasma compression in the MAGO chamber and discuss a number of difficulties along this line.…”