1. Stable sub‐micrometre high‐flux probe for soft X‐ray ARPES using a monolithic Wolter mirror.
- Author
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Senba, Yasunori, Kishimoto, Hikaru, Takeo, Yoko, Yumoto, Hirokatsu, Koyama, Takahisa, Mimura, Hidekazu, and Ohashi, Haruhiko
- Subjects
- *
SOFT X rays , *FOCUS (Optics) , *PHOTOELECTRON spectroscopy , *MIRRORS - Abstract
A focusing optics that can provide a sub‐micrometre high‐flux probe for soft X‐ray micrometre‐scale angle‐resolved photoemission spectroscopy (ARPES) is proposed. A monolithic Wolter‐type mirror with a large acceptance, achromatism and small comatic aberration was designed and evaluated. A focused beam size of 0.4 µm (vertical) × 4 µm (horizontal), a high throughput of 59% and a high tolerance of 1.6 mrad to the pitching error were realized at a photon energy of 1000 eV. A Wolter‐type mirror can be practically employed as a stable sub‐micrometre focusing mirror with high throughput in ARPES applications. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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