X-ray Thomson-scattering measurements of density and temperature in shock-compressed beryllium.

We present the first x-ray scattering measurements of the state of compression and heating in laser irradiated solid beryllium. The scattered spectra at two different angles show Compton and plasmon features indicating a dense Fermi-degenerate plasma state with a Fermi energy above 30 eV and with temperatures in the range of 10-15 eV. These measurements indicate compression by a factor of 3 in agreement with Hugoniot data and detailed radiation-hydrodynamic modeling.

[1]  O. Landen,et al.  The physics basis for ignition using indirect-drive targets on the National Ignition Facility , 2004 .

[2]  O. Landen,et al.  Probing warm dense lithium by inelastic X-ray scattering , 2008 .

[3]  Junzo Chihara,et al.  Interaction of photons with plasmas and liquid metals - photoabsorption and scattering , 1999, cond-mat/9909372.

[4]  D. Gericke,et al.  Structure of strongly coupled multicomponent plasmas. , 2008, Physical review. E, Statistical, nonlinear, and soft matter physics.

[5]  O. Landen,et al.  Theoretical model of x-ray scattering as a dense matter probe. , 2003, Physical review. E, Statistical, nonlinear, and soft matter physics.

[6]  O. Landen,et al.  X-ray probe development for collective scattering measurements in dense plasmas , 2006 .

[7]  T. S. Perry,et al.  X‐ray radiographic measurements of radiation‐driven shock and interface motion in solid density material , 1993 .

[8]  O. Landen,et al.  K-alpha conversion efficiency measurements for X-ray scattering in inertial confinement fusion plasmas , 2006 .

[9]  Weber,et al.  Measurements of the equation of state of deuterium at the fluid insulator-metal transition , 1998, Science.

[10]  R. Redmer,et al.  Theory of X-ray Thomson scattering in dense plasmas , 2005, IEEE Transactions on Plasma Science.

[11]  O. Landen,et al.  Demonstration of spectrally resolved x-ray scattering in dense plasmas. , 2003, Physical review letters.

[12]  V. Fortov,et al.  Phase transition in a strongly nonideal deuterium plasma generated by quasi-isentropical compression at megabar pressures. , 2007, Physical review letters.

[13]  Barukh Yaakobi,et al.  Diagnosing direct-drive, shock-heated, and compressed plastic planar foils with noncollective spectrally resolved x-ray scattering , 2007 .

[14]  R Thiele,et al.  Plasmon resonance in warm dense matter. , 2008, Physical review. E, Statistical, nonlinear, and soft matter physics.

[15]  O. Landen,et al.  Angular sensitivity of gated microchannel plate framing cameras , 2000 .

[16]  S. Cheong,et al.  Optically induced lattice dynamics probed with ultrafast x-ray diffraction , 2008 .

[17]  O. Landen,et al.  Finite temperature dense matter studies on next-generation light sources , 2003 .

[18]  Ian C. Smith,et al.  Enhancement of x-ray yield from the Z-Beamlet laser for monochromatic backlighting by using a prepulse , 2006 .

[19]  Hypernetted Chain Calculations for Two‐Component Plasmas , 2006, physics/0612157.

[20]  O. Landen,et al.  Observations of plasmons in warm dense matter. , 2006, Physical review letters.

[21]  A quantum fluid of metallic hydrogen suggested by first-principles calculations , 2004, Nature.

[22]  G. Zimmerman,et al.  A new quotidian equation of state (QEOS) for hot dense matter , 1988 .

[23]  D. Neely,et al.  Spectrally resolved X-ray scatter from laser-shock-driven plasmas , 2007 .

[24]  S. Skupsky,et al.  Progress in direct-drive inertial confinement fusion , 2004 .

[25]  J. Knauer,et al.  The Role of the Laboratory for Laser Energetics in the National Ignition Facility Project , 1996 .

[26]  Roger W. Falcone,et al.  Ultrafast X-ray Thomson Scattering of Shock-Compressed Matter , 2008, Science.

[27]  A. Ravasio,et al.  Direct observation of strong ion coupling in laser-driven shock-compressed targets. , 2007, Physical review letters.

[28]  O. Landen,et al.  Generalized x-ray scattering cross section from nonequilibrium plasmas. , 2006, Physical review. E, Statistical, nonlinear, and soft matter physics.

[29]  Bruce A. Hammel,et al.  Dense matter characterization by X-ray Thomson scattering , 2001 .

[30]  Weaver,et al.  X-Ray diffraction from a dense plasma , 2000, Physical review letters.