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2 results on '"Sanpei, Akio"'

1. Initial Result of 3-D Reconstruction of Dusty Plasma Through Integral Photography Technique.

Author

Sanpei, Akio, Takao, Naoki, Kato, Yusuke, and Hayashi, Yasuaki

Subjects
*DIGITAL photography, *DUSTY plasmas, *IMAGE reconstruction, *PARTICLES, *THREE-dimensional imaging
Abstract

The initial result of 3-D reconstruction of dusty plasma obtained through the integral photography technique has been reported. Integral photography has been applied to observe fine particles floating in a horizontally parallel-plate radio-frequency plasma. By using a simple system with a lens array and a standard charge-coupled device camera, we can identify the 3-D position of dust particles from a single exposure image obtained from one viewing port. [ABSTRACT FROM PUBLISHER]

Published
2016
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2. Tangential Image of Helical SXR Emissivity Structure in Low-Aspect-Ratio RFP.

Author

Sanpei, Akio, Oki, Kensuke, Nakamura, Mitsuru, Higashi, Akio, Motoi, Hidehiko, Fukahori, Daisuke, Himura, Haruhiko, Masamune, Sadao, Ohdachi, Satoshi, Nishino, Nobuhiro, Onchi, Takumi, and Ikezoe, Ryuya

Subjects
*GRENZ rays, *ASPECT ratio (Images), *EMISSIVITY, *MICROSTRUCTURE, *REVERSED field pinches, *PLASMA gases, *CAMERAS, *MAGNETIC resonance imaging, *PLASMA diagnostics
Abstract

A hot helical structure in low-aspect-ratio (A) reversed field pinch (RFP) is obtained with the soft X-ray (SXR) imaging technique. Tangential SXR imaging camera and high-speed camera system is applied to low-A RFP for studying quasi-single-helicity RFP state. The helical structure correlated with m = 1/n = 4 tearing mode is identified by means of a subtraction technique. [ABSTRACT FROM AUTHOR]

Published
2011
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