Modeling Species Transport across a V/CH Interface*

We are developing a platform on Z to measure species transport across a V/CH interface, using an x-ray driven hohlraum to drive the sample to ~150 eV over 5 ns. Preliminary results show a change in the edge profiles over the ~5 ns heating time. Efforts to model this experiment take advantage of recent theoretical developments in multi-species plasma kinetics^1,2 that have enabled development of computational tools³ for studying transport at material interfaces in experimentally relevant conditions. Here, we describe the application of this method to V/CH interface experiments conducted at the Z-facility at Sandia National laboratories, highlighting the role played by the development of strong electric fields at material interfaces and the sensitivity of these fields to interface conditions.

¹Stanton & Murillo (2016): 10.1103/PhysRevE.93.043203

²Haack et al. (2017a): 10.1007/s10955-017-1824-9

³Haack et al. (2017b): 10.1103/PhysRevE.96.063310