Stable sub-micrometre high-flux probe for soft X-ray ARPES using a monolithic Wolter mirror

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   µ m (vertical) × 4   µ m (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.

Source: Journal of Synchrotron Radiation - July 9, 2020 Category: Physics Authors: Senba, Y. Kishimoto, H. Takeo, Y. Yumoto, H. Koyama, T. Mimura, H. Ohashi, H. Tags: focusing optics Wolter mirror monolithic soft X-rays ARPES research papers Source Type: research