抄録
We performed XRD observations of laser-shock compressed highly oriented pyrolytic graphite along the
[002] orientation using an x-ray free electron laser: SACLA. The x-ray diffraction detector recorded
x-rays that are diffracted from multiple lattice planes. These diffracted x-rays indicate both
uncompressed and compressed states. We observed diffraction lines from the (002) plane in both states
as spots that resembled single crystals. From our analysis, we successfully observed the uniaxial
compression anomalous lattice state in which the interlayer distance of graphite was compressed by
about 16%. The diffraction line, such as the compressed (103) plane, also shows that the (002) plane is
almost ideal to the compressed uniaxial.
