Model calculations of gain at 13.5 AA in rapidly expanding cylindrical plasmas

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Abstract
The authors discuss a numerical study of the formation of gains in the Halpha transition of hydrogenic Ti XXII during the recombination of freely expanding, energetic, columns of titanium plasma. The simulations predict that for laser gains greater than or about 10 cm-1 the expansions must commence with initial radii less than or about 1 mu m. They conclude that unless this constraint is significantly relaxed either by certain physical effects neglected in the numerical study or by some technique with this specific aim (e.g. the use of alloy plasmas instead of pure titanium ones) the scheme studied is not within the realms of current technology. It may be possible, in the future, to produce such plasmas through the implosions of hollow or structured shells.

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