Category Archives: Principles of Fusion Energy

Gravitational Confinement

A most spectacular display of fusion energy is associated with stars, where confinement comes about because of the gravitational pressure of an enormous mass. High density and temperature thereby result toward the stellar centre enabling the fusile ions to bum. While energy leakage and particle escape occurs from the star’s surface, the interior retains most of the reaction power and […]

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Instabilities in Mirror Fields

In deriving the relative requirements of the magnetic field strength and the plasma pressure for effective confinement-Sec. 9.1-we considered, in the fluid model, the case of magnetohydrodynamic equilibrium. However, we did not examine whether this equilibrium state is stable or not. In an equilibrium state all forces are balanced allowing thus for a steady-state solution of the set of magnetohydrodynamic […]

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JiDT Channel

The first wall for a muon catalyzed fusion reaction will need to withstand pressures of the order of 108 Pa at moderate temperatures of about 103 K. Hence, this wall may be viewed as a thick cladding not unlike pressure tubes used in some fission reactors. However, while the design concept suggests some simplifications, significant problems remain to be studied; […]

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Principles of. Fusion Energy

A. A. Harms McMaster University K. F. Schoepf University of Innsbruck G. H. Miley University of Illinois D. R. Kingdon McMaster University Fusion energy is widely perceived as the ultimate terrestrial energy source. This appealing prospect has emerged by reason of scientific experiment, by the expectation of continuing scientific and technological progress, and by intriguing observations such as the following: […]

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Cyclotron Radiation

We have established that the helical motion of a charged particle, guided by magnetic field lines as suggested in Fig. 5.5, involves a centripetal acceleration and therefore leads to the emission of radiation called cyclotron radiation and evidently involves an energy loss for the particle. We assess the associated power loss starting with the classical expression for the radiation emission […]

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Inertial Confinement Fusion

An additional approach to confining fusion reactants, completely distinct from that of magnetically confined systems, is inertial confinement fusion which involves compressing a small fuel pellet to very high density by an intense pulse of energy. This compressive pulse of energy may be supplied by lasers or ion beams. We now investigate several issues fundamental to this approach to fusion.

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Hybrid Power Flow

The dominant power flow for steady-state hybrid operation is suggested in Fig. 15.2 and the corresponding station electrical output is given by Pnet ~ Ць Ph, t Pin • (15.6) Here Pbit* is the thermal power extracted from the blanket and converted into electrical form with efficiency г|ь while Pin is the input power supplied with efficiency Г|щ to the […]

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Distribution Parameters

It is most important to recognize that while the particles possess a range of velocities, speeds, and energies, the temperature T describes a particular distribution function and is a fixed parameter for a given thermal state; changing the temperature of the medium will alter the various moments of the function but its characteristic shape is retained, Fig.2.2.

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Energy Viability

An assessment of the energy liberated in a nuclear reaction-or in a sequence of reactions-relative to the energy cost of causing that reaction, is fundamental for evaluating the attractiveness of any nuclear energy system. Recall that such a criterion was employed in the energy balance assessment for magnetic and inertial confinement fusion. We now seek to formulate a similar energy […]

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