Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2017-08-01

Journal: NUCLEAR MATERIALS AND ENERGY

Included Journals: EI、SCIE、Scopus

Volume: 12

Issue: ,SI

Page Number: 1236-1242

ISSN: 2352-1791

Key Words: Tokamak; Speckle interferometry; Plasma-facing materials; Topography measurement

Abstract: Temporal phase-shifting speckle interferometry is proposed to measure plasma-facing materials' (PFMs) topography variation in tokamak. In this approach, laser ablation method is used to simulate erosion and redeposition, and polished molybdenum/tungsten (Mo/W) samples which are related to PFMs have been tested. The geometric topography of the ablated area was reconstructed successfully via a numerical model developed in this work. The results demonstrate the feasibility of temporal phase-shifting speckle interferometry applied to topography measurement of PFMs. (C) 2017 Published by Elsevier Ltd.