Highly intense monochromatic X-ray diffraction facility for high-pressure research at SPring-8

• Published in: High pressure research 2008-09, Vol.28 (3), p.163-173
• Main Authors: Ohishi, Yasuo, Hirao, Naohisa, Sata, Nagayoshi, Hirose, Kei, Takata, Masaki
• Format: Article
• Language: English
• Subjects: beamline; diamond anvil cell; double-sided laser-heating; SPring-8; synchrotron radiation X-ray diffraction
• ISSN: 0895-7959; 1477-2299
• DOI: 10.1080/08957950802208910

Beamline BL10XU at SPring-8, designed for X-ray diffraction experiments using diamond anvil cells at high pressure and low/high temperature, is continuously upgraded. The X-ray source, optics, and attractive experimental equipment such as simultaneous measurement systems have been optimized over the past years. The high energy and high intensity monochromatic X-ray beams emitted by an undulator source, focused using a characteristic X-ray refractive lens, have enabled us to obtain excellent counting statistics and high-resolution X-ray diffraction data even from a highly compressed sample under multi-megabar pressure. At BL10XU, low- and high-temperature conditions are achieved using a cryostat (10-300 K) and double-sided laser-heating system (1000-4000 K), respectively. Numerous results have been obtained in the fields of high-pressure materials science and mineral physics: for instance, the structural information on novel materials under pressure, including new pressure-induced structural phase transitions, the measurements of equations of states, and the phase-equilibrium data of Earth interior minerals.