A clamp-type pressure cell for high energy x-ray diffraction

We present a clamp-type pressure cell for high energy x-ray diffraction. The pressure cell was specifically designed for studies of weak superstructure reflections at low temperatures in transition metal oxides, resulting from, e.g., charge density modulations. Using a photon energy of E = 100 keV , the bulk properties of single crystals with a volume of typically 2 - 5 mm 3 can be studied in transmission geometry. To demonstrate the performance of the pressure cell, we present data on the charge stripe order in the high-temperature superconductor La 1.875 Ba 0.125 Cu O 4 .