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Dive into the research topics where Naoyuki Yamashita is active.

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Featured researches published by Naoyuki Yamashita.


Japanese Journal of Applied Physics | 2008

Position Sensitive Element for Hypervelocity Microparticles Using a Piezoelectric Plate

Takashi Miyachi; G. Kuraza; A. Nagashima; Masayuki Fujii; Nobuyuki Hasebe; Naoyuki Yamashita; K.-I. Nogami; Takeo Iwai; Hideo Ohashi; Hiromi Shibata; Shigeyuki Minami; Seiji Takechi; Toshiyuki Onishi; E. Grün; Ralf Srama; Nagaya Okada

The propagation of transverse waves generated acoustically in a piezoelectric element by colliding it with hypervelocity microparticles was studied. The propagation times were measured by a set of multiple electrodes on the surface of the element. The coordinates that the particles struck were determined by combining the propagation times and the velocity of the waves. By using the position-sensitive element, significant deviations between the prior indicated and actually measured orbits were observed. The potential of the present element as part of a steering system is discussed.


Archive | 2009

Precise Observation of Uranium, Thorium, and Potassium on the Moon by the SELENE GRS

Naoyuki Yamashita; Nobuyuki Hasebe; Eido Shibamura; M. Kobayashi; Yuzuru Karouji; Makoto Hareyama; Shingo Kobayashi; Osamu Okudaira; Tsutomu Takashima; C. D'Uston; S. Maurice; O. Gasnault; Olivier Forni; Benedicte Diez; Robert C. Reedy; Kyeong Ja Kim; Tamio Arai; M. Ebihara; Tomomichi Sugihara; Hiroyuki Takeda; Kanako Hayatsu; Kazuya Iwabuchi; Shinpei Nemoto; Yuko Takeda; K. Tsukada; Hitoshi Nagaoka; Takeshi Hihara; Shinpei Nakazawa; Hisashi Otake


Archive | 2010

The Lowest Thorium Region on the Lunar Surface Imaged by Kaguya Gamma-Ray Spectrometer

Shingo Kobayashi; M. Kobayashi; Makoto Hareyama; Nobuyuki Hasebe; Eido Shibamura; Naoyuki Yamashita; Yuzuru Karouji; Takashi Okada; C. D'Uston; O. Gasnault; Olivier Forni; Robert C. Reedy; Kyeong Ja Kim; Hiroyuki Takeda; Tamio Arai; Tomomichi Sugihara; James M. Dohm


Archive | 2005

Global Mapping of Elemental Abundance on Lunar Surface by SELENE Gamma-Ray Spectrometer

M. Kobayashi; Alexey A. Berezhnoy; C. D'Uston; M. Fujii; Nobuyuki Hasebe; T. Hiroishi; H. Kaneko; Takashi Miyachi; K. Mori; Sylvestre Maurice; M. Nakazawa; Katsuhiro Narasaki; Osamu Okudaira; Eido Shibamura; Tsutomu Takashima; Naoyuki Yamashita


Archive | 2010

Large Scale Potassium-Thorium Fractionation Around Imbrium

Olivier Forni; O. Gasnault; C. D'Uston; S. Maurice; Nobuyuki Hasebe; Naoyuki Yamashita; Shingo Kobayashi; Yuzuru Karouji; Makoto Hareyama; M. Kobayashi; Robert C. Reedy; Kyeong Ja Kim


Archive | 2011

Prospects for Deriving Lunar Elemental Maps by Inelastic Scattering Gamma Rays

Naoyuki Yamashita; O. Gasnault; Olivier Forni; C. D'Uston; Serge Chevrel; Robert C. Reedy; Nobuyuki Hasebe; Yuzuru Karouji; Osamu Okudaira; Shingo Kobayashi; Makoto Hareyama; M. Kobayashi; Eido Shibamura; Kyeong Ja Kim


Archive | 2010

Observation of Elemental Compositions on the Moon by the Kaguya Gamma-Ray Spectrometer

Naoyuki Yamashita; O. Gasnault; Olivier Forni; C. D'Uston; Nobuyuki Hasebe; Yuzuru Karouji; Shingo Kobayashi; Morishita Makoto; Robert C. Reedy


113th Annual GSA Cordilleran Section Meeting - 2017 | 2017

HIDDEN ICE ON DWARF PLANET CERES: RESULTS FROM THE DAWN MISSION

Norbert Schorghofer; Thomas Humphrey Prettyman; A. I. Ermakov; Erwan Mazarico; Thomas Platz; Stefan Ewoud Schroeder; Jean-Philippe Combe; Naoyuki Yamashita; C.A. Raymond; C. T. Russell


GSA Annual Meeting in Denver, Colorado, USA - 2016 | 2016

ELEMENTAL CONSTRAINTS ON CERES' EVOLUTION

Thomas Humphrey Prettyman; Naoyuki Yamashita; Michael J. Toplis; Harry Y. McSween; Norbert Schorghofer; S. Marchi; William C. Feldman; Julie C. Castillo-Rogez; Olivier Forni; D. J. Lawrence; E. Ammannito; Bethany L. Ehlmann; Hanna G. Sizemore; Steven Peter Joy; C. Polanskey; Marc D. Rayman; C.A. Raymond; C. T. Russell


Archive | 2011

The GIS-based geologic investigation of the South Pole-Aitken basin region of the Moon using SELENE elemental information

Kyeong Ja Kim; James M. Dohm; Jean-Pierre Williams; Javier Ruiz Pérez; Byeong-Hyeok Yu; Trent M. Hare; Nobuyuki Hasebe; Naoyuki Yamashita; Yuzuru Karouji; Shingo Kobayashi; Makoto Hareyama; Eido Shibamura; Masanori Kobayashi; Claude d’Uston; O. Gasnault; Olivier Forni; R. C. Reedy

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Shingo Kobayashi

National Institute of Radiological Sciences

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Yuzuru Karouji

Japan Aerospace Exploration Agency

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Takashi Miyachi

Chiba Institute of Technology

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C. D'Uston

Paul Sabatier University

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