Nanosecond x-ray diffraction from polycrystalline and amorphous materials in a pinhole camera geometry suitable for laser shock compression experiments.
Nanosecond pulses of quasimonochromatic x-rays emitted from the K shell of ions within a laser-produced plasma are of sufficient spectral brightness to allow single-shot recording of powder diffraction patterns from thin foils of order millimeter diameter. Strong diffraction signals have been observed in a cylindrical pinhole camera arrangement from both polycrystalline and amorphous foils, and the experimental arrangement and foil dimensions are such that they allow for laser shocking or quasi-isentropic loading of the foil during the diffraction process.
Hawreliak
J
J
Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. hawreliak1@llnl.gov
Lorenzana
H E
HE
Remington
B A
BA
Lukezic
S
S
Wark
J S
JS
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008422:Materials Testing / Q000295:instrumentation* / Q000379:methods; D008567:Membranes, Artificial; D008670:Metals / Q000737:chemistry*; D008968:Molecular Conformation; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013997:Time Factors; D014961:X-Ray Diffraction / Q000295:instrumentation*
D008567:Membranes, Artificial; D008670:Metals