Utilizing multiple fusion-reaction histories, x-ray-emission histories, and charged-particle stopping to evaluate high-energy-density-plasma (HEDP) transport properties at OMEGA

We present a new technique that is used to evaluate HEDP transport properties, including stopping power and ion-electron equilibration, in D3He thin-glass exploding pushers. This technique is based on measurements of DD and D3He reaction histories, and x-ray emission histories in different energy bands from which time-resolved ion and electron temperatures are inferred. It is also based on measurements of energy loss of the low-velocity ions: DD-3He, DD-triton and D3He-alpha, which is directly related to ion-electron equilibration. From these two complementary measurements, the ion-electron equilibration rate can be determined. Long term, this technique will be extended to more broadly explore transport properties in HEDP at various conditions. The work was supported by DOE, LLNL and LLE.