1. Pump-probe X-ray Diffraction Technique for Irreversible Phase Change Materials.
- Author
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Fukuyama, Yoshimitsu, Yasuda, Nobuhiro, Kimura, Shigeru, Tanaka, Yoshihito, Osawa, Hitoshi, Kim, Jungeun, Murayama, Haruno, Moritomo, Yutaka, Toriumi, Koshiro, Tanaka, Hitoshi, and Takata, Masaki
- Subjects
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OPTICAL measurements , *OPTICAL diffraction , *X-rays , *LASER beams , *CRYSTALLIZATION - Abstract
We have developed a pump-probe X-ray diffraction measurement system for a sample with irreversible reaction at BL40XU in the SPring-8. The system mainly consists of a time-resolved measurement system, a sample disk rotation system, and an X-ray microbeam system. The time-resolved measurement system gives time resolution of 50 ps in laser-pump and X-ray probe method. A sample disk rotation system for repetitive measurements was made to give a virgin sample for every measurement. The number of repetitions for one sample disk was increased by using the X-ray microbeam technique. To keep the overlap of the X-ray microbeam and the laser beam on the sample surface during the disk rotation, the sample disk rotation system was constructed by a low-eccentric spindle motor. By using this system, the pump-probe X-ray diffraction measurement was demonstrated for a crystallization process of a DVD material. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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