Development of a novel soft X-ray absorption spectroscopy setup under the normal atmospheric pressure condition

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So far, the application of soft X-ray analysis is highly restricted. Since soft X-rays below 2.0 keV are fairly absorbed in atmospheric air, the standard procedure in a soft X-ray analysis is to install all equipment necessary for experiments inside the high-vacuum chamber. In the present research, we have developed "the ambient pressure soft X-ray photoabsorption spectroscopy" for the observation of electronic and structural properties of matters under the normal atmospheric pressure condition. We have successfully indicated the capabilities of the XAS analysis under the more real environment, and the unique power of this technique to probe significant aspect of chemical reactions.