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Featured researches published by Riichirou Negishi.


Journal of Physics: Condensed Matter | 1995

Bragg reflection and transmission of X-rays induced by the imaginary part of the atomic scattering factor

Xu Zhang-Cheng; Zhao Zongyan; Guo Changlin; Zhou Sheng-Ming; Tomoe Fukamachi; Riichirou Negishi; Tetsuo Nakajima

Formulae for X-ray dynamical Bragg diffraction are derived for a plane-parallel crystal with arbitrary thickness. These formulae are applicable even when the contribution of the real part of the atomic scattering factors to the structure factor vanishes. Based on these formulae, dynamical Bragg reflection and transmission induced only by the imaginary part of the atomic scattering factor are studied in detail.


Meeting abstracts of the Physical Society of Japan | 2008

24aWG-1 Diffractions of Bragg-(Bragg)^m-Laue Case

Kenji Hirano; Tomoe Fukamachi; Riichirou Negishi; Masami Yoshizawa; Keiichi Hirano; Takaaki Kawamura


Meeting abstracts of the Physical Society of Japan | 2006

23aYK-9 Properties of Output Beam from Crystal X-ray Waveguide

Kenji Hirano; Tsuyoshi Oba; Tomoe Fukamachi; Riichirou Negishi; Masami Yoshizawa; Keiichi Hirano; Takaaki Kawamura


Meeting abstracts of the Physical Society of Japan | 2005

24pYS-11 Interference Fringe in Bragg-(Bragg)^m-Laue Case II

Riichirou Negishi; Tomoe Fukamachi; Masami Yoshizawa; Toshiyuki Tanaka; Kenji Hirano; Keiichi Hirano; Takaaki Kawamura


Meeting abstracts of the Physical Society of Japan | 2003

Anomalous scattering factors near K-absorption edge in Ge

Masami Yoshizawa; Riichirou Negishi; Sheng Ming Zhou; Tomoe Fukamachi; Takaaki Kawamura; Kuniko Hayakawa; Takashi Fujikawa


Meeting abstracts of the Physical Society of Japan | 2002

Determination of the anomalous scattering factors near Ge K absorption edge by using the phase change method

Masami Yoshizawa; ShenMing Zhou; Riichirou Negishi; Isao Matsumoto; Tomoe Fukamachi; Takaaki Kawamura


Abstracts for Annual Meeting of the Mineralogical Society of Japan Abstracts for the 50th Anniversary Meeting (2002) of the Mineralogical Society of Japan | 2002

Nepheline syenite from Pocos de Caldas

Masayasu Tokonami; Nobuyuki Aikawa; Riichirou Negishi; Masami Yoshizawa; Takamoto Okudaira


Acta Physica Sinica | 1998

RESONANT X-RAY DYNAMICAL DIFFRACTION METHOD FOR DETERMINING TEMPERATURE FACTOR

Xu Zhang-Cheng; Guo Changlin; Zhao Zongyan; Xu Jia-Yue; Zhou Sheng-Ming; Qi Ze-Ming; Tomoe Fukamachi; Riichirou Negishi; Tetsuo Nakajima


Acta Physica Sinica | 1998

ANOMALOUS TRANSMISSION OF X RAYS UNDER ASYMMETRICAL REFLECTION CONDITION NEAR THE ABSORPTION EDGE

Xu Zhang-Cheng; Guo Changlin; Zhao Zongyan; Tomoe Fukamachi; Riichirou Negishi


Acta Physica Sinica | 1997

DIRECTION OF THE ENERGY FLOW IN PERFECT CRYSTALS-NEAR THE ATOMIC ABSORPTION EDGE

Xu Zhang-Cheng; Guo Changlin; Zhao Zongyan; Zhou Sheng-Ming; Tomoe Fukamachi; Riichirou Negishi

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Masami Yoshizawa

Saitama Institute of Technology

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Takaaki Kawamura

Takeda Pharmaceutical Company

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Kenji Hirano

Saitama Institute of Technology

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Qi Ze-Ming

Chinese Academy of Sciences

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