Hydrogen two-photon emission spectrum of moderately dense plasma

The physical conditions in which two-photon emission is a nonnegligible contributor to the continuous spectrum of hydrogen have been examined. This process can make a significant contribution to the continuous spectral energy distribution for electron densities as high as 1011 cm-3 and for temperatures and geometrical thicknesses that are of astrophysical interest. We present quantitative results define the region of parameter space over which the emission from this process might be detectable