Controlled Nuclear Fusion Current Research and Potential Progress (1978) / Chapter Skim
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METHODS OF APPROACH
METHODS OF APPROACH
Pages 5-8
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From page 5... ...
most magnetic confinement schemes require nT values in the range of l0 trillion to l00 trillion to reach the "energy break-even" conditions, where the energy released through fusion reactions just equals the energy invested in the plasma. An operating fusion reactor would have to achieve nT values somewhat higher than the break-even condition (or Lawson criterion)
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From page 6... ...
Tokamak is a toroidal device in which a combination of externally applied toroidal magnetic fields and poloidal magnetic fields induced by toroidal currents flowing in the plasma create the desired magnetic configurations. Another promising confinement concept is the magnetic mirror, in its simplest configuration an open-ended device in which the confining magnetic fields are generated externally by suitably shaped coils.
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From page 7... ...
The first energy source tried in an attempt to initiate these microexplosions was the laser; consequently, the inertial confinement approach is often referred to as laser fusion. More recently, energetic electron beams have also been used to drive the implosion; and ion beams, produced by technology borrowed from the electron beam work or by more conventional accelerators, have also been proposed as drivers.
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From page 8... ...
To this extent, the reactor cycle might be thought of as resembling the cycle in an internal combustion engine. The reactor, as in the magnetic confinement approach, would also include a blanket for breeding tritium and a coolant for converting fusion-product energy to thermal energy.
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