Double-sided laser heating system at HPCAT for in situ x-ray diffraction at high pressures and high temperatures

• Published in: Journal of physics. Condensed matter Vol. 18; no. 25; pp. S1097 - S1103
• Main Authors: Meng, Y, Shen, G, Mao, H K
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Bristol IOP Publishing 28.06.2006; Institute of Physics
• Subjects: Earth sciences; Earth, ocean, space; Engineering and environment geology. Geothermics; Engineering geology; Exact sciences and technology; High-pressure apparatus and techniques; shock tubes; diamond anvil cells; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Physics; Heat sources; Nondestructive testing; In situ; Laser-radiation heating; Geophysics; Diamond anvil; X radiation; XRD; High temperature; Laser irradiation; X-ray radiography; High pressure
• ISSN: 0953-8984; 1361-648X
• DOI: 10.1088/0953-8984/18/25/S17

An overview of a YLF:Nd laser heating system at the undulator x-ray diffraction station (16ID-B) of the high-pressure collaborative access team (HPCAT) of the Advanced Photon Source is presented. Based on the double-sided laser heating technique, the system is designed with considerable effort on the mechanical and optical stabilities, features for user-friendly operation, and the capability of accommodating diamond anvil cells of various heights up to 68 mm. This system has been used for x-ray diffraction studies of a wide range of materials to over 150 GPa and above 3000 K. Applying the laser heating technique to radial x-ray diffraction studies at simultaneous high-pressure and high-temperature (PT) conditions requires heating to be conducted at variable angles relative to the x-ray direction. A rotation laser heating design is discussed.