[6a-S45-1~8] 3.6 Ultrashort-pulse and high-intensity lasers

[6a-S45-8] Time-zero determination method for X-ray free electron laser

〇(M2)Shouta Mizote¹, Masaki Hada¹, Yasuhiko Hayashi¹, Sascha Epp², Alexander Marx², Yinpeng Zhong², Henrike Mueller-Werkmeister², Robin Owen³, Darren Sherrell³, Shigeki Oowada⁴, Tetsuo Katayama^4,5, Kensuke Tono^4,5, Makina Yabashi^4,5, Taishi Ono⁶, Kouji Motomura^4,6, Yoshiaki Kumagai^4,6, Fukuzawa Hironori^4,6, Kiyoshi Ueda^4,6, Oliver Ernst⁷, Dwayne Miller^2,7 (1.Okayama Univ., 2.MPI, 3.DLS, 4.RIKEN, 5.JASRI, 6.Tohoku Univ., 7.Univ. Toronto)

Keywords:ultrafast phenomena, X-ray free electron laser

Atomic- or molecular-level structural dynamics of materials under photoexcitation have been observed via time-resolve X-ray diffraction experiments with X-ray free electron lasers. Here, one of the important techniques should be highly-precise determination of the arrival time of optical and X-ray pulses at the sample position (time-zero). The time-zero determination method using nonthermal melting of Bi will be given in the presentation.