Magnetized Cylindrial Targets for Heavy Ion Fusion
Cylindrical targets are promising as an alternative approach to heavy ion fusion (HIF)[1], as well as for basic science-oriented experiments in the near future [2]. In my PhD thesis (available as download), I have investigated basic properties of such targets. In difference to spherical heavy ion fusion targets, the cylindrical targets can be driven directly by a single ion beam, while axial magnetic fields (for heat insulation) can be applied to the targets prior to implosions. In cylindrical targets, the magnetic field geometry is consistent with the target; this is the main difference to other approaches to magnetized target fusion [3].
Figure: Schematic view of a magnetized cylindrical target. The target consists of a metallic tube filled with fuel plasma at low density. An axial magnetic field ( indicated by B) is applied externally before the implosion. The driving ion beam then heats the outer part of of the hollow cylinder; it expands radially and drives the inner part of the tube (pusher) towards the axis, as indicated by arrows. A typical size of the targets is approximately 1-3mm in radius and 10-30mm in length.
The most prominent features of magnetized cylindrical fusion targets are:
References:
[1] R.Ramis, J.Honrubia and J.Meyer-ter-Vehn, Hohlraum targets for HIDIF. In C.Labaune, W.Hogan and K.Tanaka (Eds)
Inertial Fusion Sciences and Applications, p.88, Elsevier, Paris (1988)
[2] M.M. Basko, Magnetized implosions driven by intense ion beams, Physics of Plasmas 7, 4579 (2000)
[3] Kirkpatrick et al, Magnetized Target Fusion: An Overview, Fusion Technology 27, 201 (1995)
[4] A.Caruso and C.Strangio, The injected entropy approach for the ignition and high targets by heavy ion beams or incoherent x-ray pulses, in C.Labaune, WHogan and K.Tanaka (Eds) ibid.
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Figure: Schematic view of a magnetized cylindrical target. The target consists of a metallic tube filled with fuel plasma at low density. An axial magnetic field ( indicated by B) is applied externally before the implosion. The driving ion beam then heats the outer part of of the hollow cylinder; it expands radially and drives the inner part of the tube (pusher) towards the axis, as indicated by arrows. A typical size of the targets is approximately 1-3mm in radius and 10-30mm in length.
The most prominent features of magnetized cylindrical fusion targets are:
- ignition at reduced fuel \rhor,
- relaxed demands on the driver pulse duration and power,
- total energies comparable to standard ICF
References:
[1] R.Ramis, J.Honrubia and J.Meyer-ter-Vehn, Hohlraum targets for HIDIF. In C.Labaune, W.Hogan and K.Tanaka (Eds)
Inertial Fusion Sciences and Applications, p.88, Elsevier, Paris (1988)
[2] M.M. Basko, Magnetized implosions driven by intense ion beams, Physics of Plasmas 7, 4579 (2000)
[3] Kirkpatrick et al, Magnetized Target Fusion: An Overview, Fusion Technology 27, 201 (1995)
[4] A.Caruso and C.Strangio, The injected entropy approach for the ignition and high targets by heavy ion beams or incoherent x-ray pulses, in C.Labaune, WHogan and K.Tanaka (Eds) ibid.
--> go back to Andreas Kemp's home page
-->go back to the MPQ Theory home page
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