Development of soft X-ray imaging spectroscopy technique which simultaneously resolves time and space without repetition

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13631
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: Amemiya Kenta 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (80313196)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 時空間分解 / イメージング / スペクトロスコピー / 軟X線 / 表面化学反応

Outline of Final Research Achievements

A time-resolved imaging spectroscopy technique has been developed, which simultaneously realizes time-resolved soft X-ray spectroscopy and two-dimensional spatial imaging. Two-dimensional spatial distribution of soft X-ray absorption spectra is obtained without scanning the monochromator, by illuminating the sample with wavelength-dispersed X rays and measuring two-dimensional intensity distribution of emitted electrons with a photoelectron emission microscope. The technique was applied to a Pt/Co/Pt thin film, which had been irradiated by a laser in the air, and it was found that the spectra for inside and outside of the laser spot are different. The feasibility of the technique has been thus confirmed.

Free Research Field

放射光科学，表面科学