X-ray stimulated Raman scattering in Li and He

We propose to use initially neutral Li and He gases to observe x-ray stimulating Raman scattering. We solve the Maxwell–Bloch equations for the Raman scattering in the presence of a strong photoionization atomic depletion and show that very high conversion efficiencies can be obtained, although the required intensities are significantly high to cause very fast photoionization.