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The effects of stimulated recombination

So far in this section we have artificially excluded the effects of stimulated recombination (by manually setting the rates to zero when calculating total recombination). We illustrate the effect of relaxing this condition in figure 16, which is the equivalent of figure 9 (recombination rates vs. density) but with stimulated recombination included. Again the ionizing spectrum is a $\varepsilon^{-1}$ power law, which has strong flux at the lowest photon energies. Comparison of figures 16 and 9 shows that the rates are greatly enhanced at high densities, and this enhancement is greatest for ions with lowest ionization potentials. This is due to the influence of the low energy photons on the stimulated recombination rate, and a different spectral shape (e.g. a blackbody) would produce a different distribution of recombination with charge state at high densities.

Figure 1: figure 1a

Figure 1: figure 1b

Figure 2: figure 2

Figure 3: figure 3a

Figure 3: figure 3b

Figure 4: figure 4a

Figure 4: figure 4b

Figure 5: figure 5a

Figure 5: figure 5b

Figure 6: figure 6a

Figure 6: figure 6b

Figure 7: figure 7a

Figure 7: figure 7b

Figure 8: figure 8a

Figure 8: figure 8b

Figure 9: figure 9a

Figure 9: figure 9b

next up previous contents
Next: Sample Results, Continued Up: Sample Results: High Density Previous: Recombination emission, high density   Contents
Tim Kallman 2011-05-25