Plasma and Fusion Research is an electronic journal published by The Japan Society of Plasma Science and Nuclear Fusion Research. The journal, covering the wide disciplines of plasma science and technology, is intended to provide an accessible and comprehensive source for analysis and contemporary information and data in all areas of plasma and fusion research.

Cover Image

Multiple-pass Thomson scattering system is believed to be useful for improving the S/N ratio and for detecting temperature anisotropy. We have analyzed a system consisting of two confocal spherical mirrors, and estimated the maximum roundtrip number for a practical configuration. A proof-of-principle experiment was carried out using a He-Ne laser. The photograph shows the laser spots (numbered in order) on one of the two mirrors.

Cover image from Junichi HIRATSUKA et al., Plasma and Fusion Research Vol.5, 044 (2010).