High-Energy-Density Physics: Fundamentals, Inertial Fusion, by R. Paul Drake Dr. (auth.), Lee Davison Dr., Yasuyuki Horie PDF

Read or Download High-Energy-Density Physics: Fundamentals, Inertial Fusion, and Experimental Astrophysics PDF

Best nonfiction_7 books

• Fundamentals of Information Systems
• Mental Imagery
• Transactions on Edutainment III
• Component Models and Systems for Grid Applications: Proceedings of the Workshop on Component Models and Systems for Grid Applications held June 26, 2004 in Saint Malo, France.
• Current and New Directions in Discourse and Dialogue

Extra resources for High-Energy-Density Physics: Fundamentals, Inertial Fusion, and Experimental Astrophysics

Example text

30) as the divergence of a heat flux, Q. The heat flux is very important in the heating of plasma by laser light, and in some of the phenomena observed in plasmas produced from gases at a low enough (less than atmospheric) pressure. It is not important in the behavior of plasmas at near solid density or (for reasons discussed in Chap. 10) in the behavior of most astrophysical plasmas. 31) Q = −κth ∇T, in which the coefficient of heat conduction is κth . In a stationary fluid in which only the temperature variation is important and ∝ T, this yields a diffusion equation, ∂T /∂t ∝ −∇2 T , so the heat transport from such a description is essentially diffusive.

For a discussion of this last point see for example Chap. 6 of the electrodynamics text by Jackson). 10) from which one sees that cs is both the phase velocity (ω/k) and the group velocity (∂ω/∂k) of these waves. Note that the fluctuating amplitude ρ1 cancels out of the dispersion relation. 2), until it becomes large enough that linearization becomes invalid. 10). 9), the actual, mathematical Fourier transform of the spectral density ρ˜(k, ω). 10). Indeed, one aspect of the behavior of acoustic waves of larger amplitude is worth mentioning.

First, the presence of a field implies the presence of current, generally carried by particles. 48) in which Lmm is L in mm and TeV is T in eV, and the Coulomb logarithm ln Λ is also defined in Sect. 5. 48) are quite interesting and are illustrated in Fig. 2. Plasmas with sub-mm scale lengths tend to have 1–10 ns magnetic diffusion times, while plasmas with scale lengths of a few mm and temperatures above 100 eV have µs-scale diffusion times. Highenergy-density systems that are magnetized can be found in either of these regimes.

Download PDF sample