Important Notice

１．We will continue to operate NanoESCA after April 2025.
＜Details＞
Regarding the introduction of the soft X-ray multimodal operando microscopy spectrometer, we had previously announced that the operation of NanoESCA would be terminated at the end of fiscal year 2024. However, due to requests to continue using it, we have considered the matter and, as a result, have decided to continue its operation by relocating the installation position several meters upstream.
Please note that the relocation of the installation position may cause changes in the focused beam size of the NanoESCA.
Since focused beam usage with NanoESCA is classified as advanced measurement, so if you have any questions about the detailes, please contact Professor Yoshihisa Harada or Assistant Professor Hisao Kiuchi of the University of Tokyo, who are the experts of the experimental techniques and the related science.
If you do not know their contact information, please contact your concierge in charge.

２．If it becomes necessary to suspend or terminate the use of a measuring device, we will notify you on this website.
＜Details＞
For existing measurement devices and other equipment on the beamlines, we may suspend or terminate their use in cases of serious malfunction, significant aging, or notably low usage frequency. In such cases, we will make an announcement on this website.

Experimental Techniques

• Soft X-ray absorption spectroscopy (XAS)
• Resonant inelastic soft X-ray scattering (RIXS) : Advanced measurement
• Soft X-ray photoelectron spectroscopy (XPS)
• Nano X-ray photoelectron spectroscopy (NanoESCA) : Advanced measurement

Overview

BL07U is a beamline dedicated to analyzing the electronic states of materials using soft X-rays in the energy range of 50 to 1000 eV. It is designed to utilize vertical and horizontal linearly polarized light, as well as left and right circularly polarized light, generated by an APPLE-II type elliptical undulator. The optical system employed has no energy dependence on the deflection angle or divergence.
As for experimental stations, a nano-X-ray photoelectron spectroscopy system (3DNanoESCA) and a high-resolution resonant inelastic soft X-ray scattering spectrometer (HORNET) are placed in tandem, enabling the chemical state analysis of solids, liquids, and gases.

Beam Characteristics

Energy Range

50 - 1000 eV (Circular Polarization)
250 - 1000 eV (Horizontal Linear Polarization)

Flux

> 1x10¹² photons/s
(calculated value, depends on energy and experimental conditions)

Light Source and Optics

The light source is a 53-pole, 75 mm period APPLE-II type undulator, and monochromatic soft X-ray beams are available via a grating monochromator. The exit slit is located downstream of the monochromator, which can be used to adjust the energy resolution and as a virtual light source point in scanning-type imaging.

Experimental Station

【HORNET】

Measurement Methods

・X-ray Absorption Spectroscopy (XAS) (TEY, PFY, Automated Measurement):
Approximately 10 minutes per spectrum [Standard Measurement]

・X-ray Absorption Imaging (TEY, PFY): [Standard Measurement]

・Resonant Inelastic soft X-ray Scattering (RIXS): [Advanced Measurement]

Beam Size

・Approx. 20 µm (horizontal) × 5 µm (vertical)

Samples

・Solid　　　　　　　 [Standard Measurement]

・Solid, Liquid, Gas 　 [Advanced Measurement]

・Mount Samples

【3DNanoESCA】

Measurement Methods

・X-ray Photoelectron Spectroscopy (XPS): Approximately 15 minutes per spectrum

・X-ray Absorption Spectroscopy (XAS) (TEY): Approximately 10 minutes per spectrum

Beam Size

・1 mm square: [Standard Measurement]

・Φ100 nm (using FZP) : [Advanced Measurement]

Samples

・Solid (electrically conductive, with the observation target located within 2 nm depth from the surface)

・Mount Samples

Layout

Advanced Measurement

As advanced measurements, we offer:
・HORNET: Resonant Inelastic soft X-ray Scattering, capable of measuring liquids and gases using a solution cell.
・3DNanoESCA: Nano-X-ray Photoelectron Spectroscopy.

Furthermore, operando measurements of devices such as transistors and batteries can be performed using these instruments.
For further details, please contact the appropriate personnel: Professor Harada or Assistant Professor Kiuchi at the Institute for Solid State Physics, The University of Tokyo.

Links
Synchrotron Radiatiom Science YOSHIHISA HARADA LAB.
The Institute For Solid State Physics Synchrotron Orbit Radiation HARADA LAB.