Research on open traps in the Soviet Union

Yushmanov, E.E.

doi:10.1088/0029-5515/25/9/038

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…For small spindle cusp devices the confinement times have been r-0.1-1 ms. Little distinction has been made experimentally between particle confinement and energy confinement. For ring cusps the conhement time is assumed to scale roughly in accordance with equation (40) zdie = 0.09TeiaR/pbp,. (40) This equation predicts z d i p 0.8 ms for Jupiter-2M parameters of table 2.…”

Section: Density Temperature and Confinement Time Scalingsmentioning

confidence: 99%

“…For ring cusps the conhement time is assumed to scale roughly in accordance with equation (40) zdie = 0.09TeiaR/pbp,. (40) This equation predicts z d i p 0.8 ms for Jupiter-2M parameters of table 2. The experimentally measured co&nement time was 2-3 ms. (If the central electron temperature were higher than d e 15 eV reported from a Langmuir probe under the magnet coils, then the theroretical zdin would be longer.)…”

Section: Density Temperature and Confinement Time Scalingsmentioning

confidence: 99%

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Magnetic electrostatic plasma confinement

Dolan¹

1994

Plasma Phys. Control. Fusion

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Electrostatic plasma confinement and magnetic electrostatic plasma confinement (MEPC) have been studied for four decades. The multiple potential well hypothesis, postulated to explain high neutron yields from Hinch's colliding beam experiment, has been supported by several pieces of evidence, but results were inconclusive. Magnetic shielding of the grid was developed to reduce the required beam current and to prevent grid overheating. Electrostatic plugging of magnetic cusps evolved to a similar confipuration. Due to low budgets, early MEPC experiments used spindle cusps, which are poor for plasma confinement. Later experiments used multipole cusps or a linear set of ring cusps, which have larger volnmes of field-free plasma. To keep the self-shielding voltage drop A+ S 100 kV, the electron density n, in the anode gap should be less than about 10'9m-3. The central plasma density can be an order of magnitude higher. The ATOLL toroidal quadrupole had anomalous electron energy transport, but the Jupiter-2M linear set of ring cusps achieved a transport rate about a factor of two above the classical rate. With near-classical transport, a power gain ratio Q = 1 0 is predicted for a reactor with r p = 3 m , B,=6T, and applied voltage + , =400 kV. Besides producing electricity and synthetic fuels, MEPC reactors could be used for heavy ion beams sources and neutIon generators. The main issues of concern for MEPC reactor development are electron transport, plasma purity and electrode alignment and voltage holding.= 100 kV, zP = 0.1 s and d = 0.001 m, this equation gives R > 2.5 m. E y r e 7. Cutaway view of a few grid wires with currents flowing out (+) and into (-) the plane of the drawing. The ellipses represent magnetic field lines.

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Section: Density Temperature and Confinement Time Scalingsmentioning

confidence: 99%

Section: Density Temperature and Confinement Time Scalingsmentioning

confidence: 99%

Magnetic electrostatic plasma confinement

Dolan¹

1994

Plasma Phys. Control. Fusion

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“…This cold-plasma beam is prepared outside the trap in special gas-discharge sources. The high thermal conductivity of electrons in the direction of the magnetic field then ensures that their temperature is equal to the electron temperature of the plasma outside the trap, but is small in comparison with the value given by (18). Accordingly, since the ion slowing down time r?…”

Section: Steady State Of Plasma In a Mirror Trapmentioning

confidence: 98%

Open-ended traps

Ryutov¹

1988

Sov. Phys. Usp.

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Research on open traps in the Soviet Union

Abstract: A survey of Soviet research on open traps over the past 25 years is given.

Cited by 2 publications

References 26 publications

Magnetic electrostatic plasma confinement

Magnetic electrostatic plasma confinement

Open-ended traps

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