Medium range structure studied by X-ray free electron laser

2014 Fiscal Year Final Research Report

• Project/Area Number: 23241033
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanostructural science
• Research Institution: Kyoto University
• Principal Investigator: YAO Makoto 京都大学, 理学(系)研究科(研究院), 教授 (70182293)
• Co-Investigator(Kenkyū-buntansha): NAGAYA Kiyonobu 京都大学, 大学院理学研究科, 助教 (30273436) ; MATSUDA Kazuhiro 京都大学, 大学院理学研究科, 准教授 (50362447)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: Ｘ線自由電子レーザー / 液体 / クラスター / 単粒子構造解析

Outline of Final Research Achievements

We constructed the experimental apparatus and analysis methods for the three dimensional structural determination of disordered materials using coherent x-ray pulses of free electron laser (X-FEL). We succeeded in the coincidence measurements of small angle x-ray scattering, fluorescence x-ray emission and ion time-of-flight spectra on giant (~200nm) rare-gas clusters at SACLA. Time resolved measurements of X-FEL induced phenomena in sub-ps temporal resolution were achieved by using X-FEL pump – near infrared laser probe method.
The medium-range order (MRO) of room temperature ionic liquids (RTILs), which have the domain structures on the nm spatial scale, was studied by small angle x-ray scattering experiments. We found that the MRO of RTIL is modified by adding the dopant aromatic molecules in a manner that subtly depends on the bonding nature.

Free Research Field

不規則系物理学