X-ray Thomson scattering measurements from hohlraum-driven spheres on the OMEGA laser.

X-ray Thomson scattering (XRTS) is a powerful diagnostic for probing warm and hot dense matter. We present the design and results of the first XRTS experiments with hohlraum-driven CH2 targets on the OMEGA laser facility at the Laboratory for Laser Energetics in Rochester, NY. X-rays seen directly from the XRTS x-ray source overshadow the elastic scattering signal from the target capsule but can be controlled in future experiments. From the inelastic scattering signal, an average plasma temperature is inferred that is in reasonable agreement with the temperatures predicted by simulations. Knowledge gained in this experiment shows a promising future for further XRTS measurements on indirectly driven OMEGA targets.

[1]  Roger W. Falcone,et al.  Shock Hugoniot measurements of CH at Gbar pressures at the NIF , 2013 .

[2]  Gilbert W. Collins,et al.  Simulating x-ray Thomson scattering signals from high-density, millimetre-scale plasmas at the National Ignition Facility , 2014 .

[3]  L. Divol,et al.  Observations of continuum depression in warm dense matter with x-ray Thomson scattering. , 2013, Physical review letters.

[4]  L. Divol,et al.  Platform for spectrally resolved x-ray scattering from imploding capsules at the National Ignition Facility , 2016 .

[5]  V. Fortov Extreme States of Matter , 2011 .

[6]  Y. P. Opachich,et al.  Backlighter development at the National Ignition Facility (NIF). Zinc to Zirconium , 2013 .

[7]  Andrea Kritcher,et al.  X-ray Radiography and Scattering Diagnosis of Dense Shock-Compressed Matter , 2010 .

[8]  O. Landen,et al.  In-flight measurements of capsule shell adiabats in laser-driven implosions. , 2011, Physical review letters.

[9]  Probing matter at Gbar pressures at the NIF , 2014 .

[10]  D. A. Callahan,et al.  Fuel gain exceeding unity in an inertially confined fusion implosion , 2014, Nature.

[11]  H. J. Lee,et al.  X-ray Thomson scattering as a temperature probe for Gbar shock experiments , 2014 .

[12]  S. Glenzer,et al.  X-ray Thomson scattering in high energy density plasmas , 2009 .

[13]  Gilbert W. Collins,et al.  X-ray scattering measurements on imploding CH spheres at the National Ignition Facility. , 2016, Physical review. E.