The Diagnostics of Density Distribution for Dense Hot DT Plasmas Using Fast Protons

Abstract

The density reconstruction for dense DT plasmas with high temperature has been studied. In the simulation of a plasma density diagnostics, the energy loss of fast protons going through the plasmas is crucial. The fast protons used for the diagnostics may be generated in the laser-plasma interaction and the number of the proton sources is four. If the original and final energies of protons are given, we can do the density reconstruction using simultaneous iterative reconstruction technique (SIRT) without knowing the noise level of the final energy. It turns out that the accuracy is better than that of the Tikhonov regularization method based on the deviation principle of Morozov's principle. In addition, the SIRT is suitable when the data is incomplete.