MAX IV Staff R&D. Takashi Tokushima. How to get along well with samples under atmospheric pressure using soft x-rays: a method applicable to liquids, solutions, gases, electrochemistry, high-temperature solid and so on using an ultrathin film as a window

by Takashi Tokushima

Tuesday 12 Mar 2019, 13:00 → 13:45 Europe/Stockholm

MAX III meeting room (MAX IV Laboratory)

How to get along well with samples under atmospheric pressure using soft x-rays: a method applicable to liquids, solutions, gases, electrochemistry, high-temperature solid and so on using an ultrathin film as a window

Abstract

Experiments using soft x-rays is easy if you use a proper vacuum chamber. However, it is not easy in the air because of strong absorption by oxygen and nitrogen molecules in the air. Owing to recent technological developments, such as ultra-thin film windows, differential pumping, a combination of soft x-ray absorption and emission spectroscopy is becoming one of a choice for the experimental study of samples under atmospheric pressure.

In the presentation, a method using ultra-thin (around 150nm thickness) film as a window will be introduced. One of the example is the atmospheric pressure cell using ultra-thin (~150nm) film windows, which enable photon-in photon-out experiments of soft x-rays, becomes available for liquids and solutions. Since x-ray absorption and emission spectroscopies are known as the methods to observe valence electronic state, these methods will provide important information on electronic structures that gather interests for broad fields of science including chemistry. I will present liquid cell studies from liquid water to the electrochemical cell, and recent trial to using Helium path using SPring-8, NewSubaru, HiSOR synchrotrons in Japan. It will be also discussed future studies here in MAX IV.

 

References

1.   T. Tokushima, Y. Harada, O. Takahashi, Y. Senba, H. Ohashi, L. G. M. Pettersson, A. Nilsson and S. Shin, Chemical Physics Letters, 2008, 460, 387-400.

2.   T. Tokushima, Y. Horikawa, H. Arai, Y. Harada, O. Takahashi, L. G. M. Pettersson, A. Nilsson and S. Shin,  Journal of Chemical Physics, 2012, 136, 044517-044517.

3.   Y. Horikawa, T. Tokushima, Y. Harada, O. Takahashi, A. Chainani, Y. Senba, H. Ohashi, A. Hiraya and S. Shin, Physical Chemistry Chemical Physics, 2009, 11, 8676-8679.

4.   Y. Horikawa, T. Tokushima, A. Hiraya and S. Shin, Physical Chemistry Chemical Physics, 2010, 12, 9165-9168.

5.   H. Arai, Y. Horikawa, K. Sadakane, T. Tokushima, Y. Harada, Y. Senba, H. Ohashi, Y. Takata and S. Shin, Physical Chemistry Chemical Physics, 2012, 14, 1576-1580.

6.   T. Tokushima, Y. Horikawa, O. Takahashi, H. Arai, K. Sadakane, Y. Harada, Y. Takata and S. Shin, Physical Chemistry Chemical Physics, 2014, 16, 10753-10761.

7.   Y. Horikawa, T. Tokushima, O. Takahashi, H. Hoke and T. Takamuku, Journal of Physical Chemistry B, 2016, 120, 7480-7487.

8.   Y Horikawa, T Tokushima, O Takahashi, Y Harada, A Hiraya, S Shin, Physical Chemistry Chemical Physics 20 (36), 23214-23221.

9.   T. Ishihara, T. Tokushima, Y. Horikawa, M. Kato, I. Yagi, Review of Scientific Instruments, 2017, 88, 104101.