[9p-S5-1~12] 3.5 Ultrashort-pulse and high-intensity lasers

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-S5-9] Microexplosion Experiments Using a Microfocused XFEL Focused inside a Sample

〇Kosuke Nishitani¹, Hirotaka Nakamura¹, Heun Tae Lee¹, Kai Taketoshi¹, Ryosuke Furukawa¹, Naoki Yamagata¹, Akane Oyama², Takahisa Shobu³, Aki Tominaga³, Kohei Miyanishi⁴, Taito Osaka⁴, Toshiki Yabuuchi⁵, Makina Yabashi⁵, Yusuke Seto⁶, Norimasa Ozaki⁷ (1.Grad.Sch.Eng,The Univ.of Osaka, 2.The Univ.of Osaka, 3.JAEA, 4.RIKEN, 5.JASRI, 6.Osaka Metropolitan Univ., 7.ILE, The Univ. of Osaka)

Keywords:

Microexplosion,XFEL,SACLA

We performed micro-explosion experiments using a microfocused XFEL on opaque materials in which internal focusing with visible light is difficult. The XFEL beam was focused to a micrometer-scale spot and irradiated onto the samples, and the post-irradiation morphology was observed using an optical microscope. As a result, irradiation-induced features considered to originate from micro-explosions were observed on the sample surfaces. X-ray diffraction measurements were also performed to investigate structural changes in the irradiated regions.