LASNEX simulations of ETA-II and laser target experiments

D. Ho1, F. Chambers1, Yu-Jiuan Chen1, S. Falabella1, F. Goldin1, G. Guethlein1, J. McCarrick1, R. Richardson1, S. Sampayan1, J. Weir2
1Lawrence Livermore National Laboratory, Livermore, CA, US
2Lawrence Livermore Nat. Lab., Berkeley, CA, USA

Tóm tắt

Summary form only given, as follows. In order to have confidence in the radiation converter target design for DARHT-II using LASNEX and our equation of state (EOS) for Ta, we need to compare the LASNEX simulations with experimental results from ETA-II and laser target experiments. ETA-II experiments include the following measurements: integrated line density, plasma expansion velocity, temperature requirement for hole formation, thermal images of the plasma plume, and foil heating. We will show that agreement between LASNEX simulations and experiments on ETA-II and laser-target experiments is good for essentially all the measurements obtained so far for solid Ta targets. This provides us confidence in the design of the DARHT-II radiation converter target using LASNEX and our eos for Ta. We will also report the comparison of simulations of the latest ETA-II foamed target experiments.

Từ khóa

#Plasma measurements #Plasma temperature #Plasma density #Plasma simulation #Optical design #Equations #Earth Observing System #Density measurement #Velocity measurement #Thermal expansion