Plasma and Fusion Research

Volume 20, 1302055 (2025)

Letters

Formation of a Tungsten Co-Deposition Layer with Microparticles Using Pulsed Laser Deposition
Shogo KODATE, Yuki HAYASHI, Shin KAJITA
Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
(Received 29 August 2025 / Accepted 17 October 2025 / Published 16 December 2025)

Abstract

This study performed tungsten (W) co-deposition experiments using pulsed laser deposition under exposure to helium/argon plasma in a linear plasma device. Micron-sized spherical W particles were formed under co-deposition conditions. It was suggested that these particles grew from nanoparticles via the electrostatic collection of W ions in the plasma plume before deposition.

Keywords

divertor, plasma-material interaction, laser ablation, edge-localized modes (ELMs)

DOI: 10.1585/pfr.20.1302055

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