Minor radius

In this chapter, some topics of divertor spectroscopy with molecular transport are presented, mainly based on recent studies in JT-60U, which is a large tokamak (the major radius is around 3.4 m, and the minor radius is around 1.0 m) with a W-shaped poloidal divertor in the bottom [4]. (General molecular diagnostics without transport analysis are described in [5].) The plasma parameters in the divertor plasma change as two-dimensional spatial functions, and analysis with consideration of the divertor structure is necessary for understanding the particle behavior. On the other hand, molecular reactions are very complex. Thus, transport codes using Monte Carlo techniques become useful for analysis of the molecular behavior. Applications of molecular data and the data requirements for the analysis are also discussed. In the attached divertor plasma, where the electron temperature is high (> 5eV)... 

Generation dendrimer Molecular volume (nm )" Molecular volume (nm ) Major radius (nm) Minor radius (nm) Molecular volume (nm ) ... 

Nyburg, S. C and Faerman, C. H. (1985) Acta Crystal. B41,274-279 Shapes of many atomic surfaces are elliptical. The major radius a applies to sideways contacts and the minor radius b to "polar" contacts along a covalent bond axis. Distances are for atoms singly bonded to C and may differ slightly if bonds are to other atoms. 

FIGURE 54.1 Truncated ellipsoid representation of ventricular geometry, showing major left ventricular radius (a), minor radius (b), focal length (d) and prolate spheroidal coordinates (A, 0). 

Here, the focal length d defines a family of coordinate systems that vary from spherical polar when d = 0 to cylindrical polar in the limit when d oo. A surface of constant transmural coordinate A (Figure 54.1) is an ellipse of revolution with major radius a = d cosh A and minor radius b = d sinh A. In an ellipsoidal model with a truncation factor of 0.5, the longitudinal coordinate fi varies from zero at the apex to 120° at the base. Integrating the Jacobian in prolate spheroidal coordinates gives the volume of the wall or cavity ... 

Where v—the slurry over the flow rate of the interrupter surface, p —the pressure of the slurry starting sections, />2—the pressure of the slurry starting sectional, R—flow into the radius of the circular tube surface, r—remove the minor radius of the cylindrical fluid, fi the viscosity of the slurry, /—the slurry flow through the length. It can be obtained by the equation (5) flow is ... 

The carbon fiber electrode used in this work is bevelled so that the active sensing area is an ellipse with a minor radius of 5... 

Most of the power flux from DT fusion plasmas will be carried by neutrons that slow down in the blanket of the device in a typically 1 m thick layer. As the final aim of fusion research is the construction of GW class power plants, practical power flux handling limits set the volume of the blanket into the 1,000 m order of magnitude. This means the device linear size must be in the 10 m range. Present day fusion experiments do not produce substantial fusion powers therefore, their sizes can be much smaller the torus major radius R) is 2-3 m, while the minor radius is typically 0.5-1 m. 

Core major radius Core minor radius Thickness of the liner... 

If the Princeton scheme turns out to be extendable to a reactor, the core size would be of 4.0m major radius and 0.8 m minor radius. Stored energy would reach up to 4-8 GJ in the flux core, which is not inferior to that of tokamak OH systems and EF systems. However, the main problem may be how slow the formation can be done. In order to compete with tokamak type reactors (which are supposed to increase the plasma current in 1-3 sec. according to the present design), the instantaneous power should be limited to 4-8 GW. Thus, the formation time scale is preferred to be one second. It is obvious that the 100-GJ stored toroidal energy needed in the tokamak is not required in the spheromak reactor. 

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