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| Beyond the Coronal Regime (cont.) |
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| Density Diagnostics |
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| v | Collisional depletion of the |
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| upper levels of forbidden |
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| lines |
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| v | Most popular are the He- |
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| like triplets (Gabriel & Jordan |
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| 1969). The 1s-2s forbidden |
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| line is suppressed at high |
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| densities. |
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| v | Critical density increases |
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| with Z. |
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| Ness, Mewe,
Schmitt et al. 2001 |
| 16 |