Observation of Low-Energy Positron Diffraction Patterns with a Linac-Based Slow-Positron Beam

Ken Wada; Tetsuroh Shirasawa; Izumi Mochizuki; Masanori Fujinami; Masaki Maekawa; Atsuo Kawasuso; Toshio Takahashi; Toshio Hyodo

doi:10.1380/ejssnt.2018.313

Conference -ISSS-8-

Observation of Low-Energy Positron Diffraction Patterns with a Linac-Based Slow-Positron Beam

Ken Wada, Tetsuroh Shirasawa, Izumi Mochizuki, Masanori Fujinami, Masaki Maekawa, Atsuo Kawasuso, Toshio Takahashi, Toshio Hyodo

Author information

Ken Wada
Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology
Tetsuroh Shirasawa
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology
Izumi Mochizuki
Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)
Masanori Fujinami
Department of Applied Chemistry, Chiba University
Masaki Maekawa
Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology
Atsuo Kawasuso
Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology
Toshio Takahashi
Department of Physics, Tokyo Gakugei University
Toshio Hyodo
Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)

Keywords: Low energy positron diffraction (LEPD), Low energy electron diffraction (LEED), Positron spectroscopy, Germanium

JOURNAL FREE ACCESS

2018 Volume 16 Pages 313-319

DOI https://doi.org/10.1380/ejssnt.2018.313

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Abstract

An experimental system has been developed for the study of low-energy positron diffraction (LEPD) with a slow-positron beam generated by a linear-electron-accelerator (linac). Diffraction patterns of a Ge(001)-2 × 1 surface structure have been observed with a normal positron incidence. This is the first LEPD observation with a linac-based high-intensity pulsed slow-positron beam. [DOI: 10.1380/ejssnt.2018.313]

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