Explanipedia

Evaluation of Neutron Detector Performance Using Geant4 Open

H. Ohshita, Hitoshi Endo, Tomohiro Seya · 2024

Phase correction method in a wide detector plane for MIEZE spectroscopy with pulsed neutron beams Open

T. Oda, Hitoshi Endo, H. Ohshita, Tomohiro Seya, Y. Yasu , et al. · 2021

In this study, we propose a phase correction method for a type of neutron spin echo spectroscopy, known as modulation of intensity with zero effort using a time-of-flight method (TOF-MIEZE). The phase of the MIEZE signal sensitively varies…

A Study of Focusing TOF-MIEZE Spectrometer with Small-angle Neutron Scattering Open

Fumiaki Funama, Masahiro Hino, T. Oda, Hitoshi Endo, Takuya Hosobata , et al. · 2021

Crystallization of magnetic skyrmions in MnSi investigated by neutron spin echo spectroscopy Open

Taro Nakajima, T. Oda, Masahiro Hino, Hitoshi Endo, Kazuki Ohishi , et al. · 2020

We performed neutron resonance spin echo measurements on MnSi to investigate how the magnetic skyrmions crystalize into a lattice on cooling in a magnetic field. We found that the skyrmions aggregate into small skyrmion-lattice (SkL) domai…

Tuning Neutron Resonance Spin-Echo Spectrometers with Pulsed Beams Open

T. Oda, Masahiro Hino, Hitoshi Endo, Hideki Seto, Yuji Kawabata · 2020

The neutron spin-echo spectroscopy technique involving pulsed beams can be used to effectively access a wide range of space-time correlations of condensed matter. In this study, the features of this technique, in particular, the modulation…

Development and application of a He Neutron Spin Filter at J-PARC Open

Takuya Okudaira, Takayuki Oku, Takashi Ino, Hirotoshi Hayashida, H. Kira , et al. · 2020

We are developing a neutron polarizer with polarized $^3$He gas, referred to\nas a $^3$He spin filter, based on the Spin Exchange Optical Pumping (SEOP) for\npolarized neutron scattering experiments at Materials and Life Science\nExperimen…

A study of TOF-MIEZE reflectometry for nanomagnetic dynamics Open

Masahiro Hino, T. Oda, Hitoshi Endo, Norifumi L. Yamada, Hideki Seto , et al. · 2019

Through the combination of neutron reflectometry and modulated intensity by zero effort instrument (MIEZE) technique, it is possible to detect the inelastic and quasi-elastic scattering on the surface and at the interface of thin films. In…

Experimental test of <sup>3</sup>He neutron-spin filter in MIEZE spectrometer Open

Hirotoshi Hayashida, Masahiro Hino, Hitoshi Endo, Takayuki Oku, Takuya Okudaira , et al. · 2019

A modulated intensity by zero effort (MIEZE) spectrometer is a type of neutron-resonance spin-echo spectrometer and can be used to analyze the slow dynamics of condensed matter by measuring the intermediate scattering function I ( Q ,τ). A…

A Telescoping View of Solute Architectures in a Complex Fluid System Open

Ryuhei Motokawa, T. Kobayashi, Hitoshi Endo, Junju Mu, Christopher D. Williams , et al. · 2018

Short- and long-range correlations between solutes in solvents can influence the macroscopic chemistry and physical properties of solutions in ways that are not fully understood. The class of liquids known as complex (structured) fluids-co…

Precision Mechanical Design of 900 mm Long Ellipsoidal Neutron-focusing Supermirror for VIN ROSE at J-PARC/MLF Open

Takuya Hosobata, Masahiro Hino, Hisao Yoshinaga, Toshihide Kawai, Hitoshi Endo , et al. · 2018

This paper describes a mechanical design concept for a large ellipsoidal neutron-focusing supermirror in a full figure of revolution, which is currently under development for its utilization in a neutron resonance spin echo spectrometer VI…

Observation of 400-kHz TOF-MIEZE Signals Open

T. Oda, Masahiro Hino, Hitoshi Endo, Norifumi L. Yamada, Yuji Kawabata , et al. · 2018

Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex II: Neutron Scattering Instruments Open

Kenji Nakajima, Yukinobu Kawakita, Shinichi Itoh, Jun Abe, Kazuya Aizawa , et al. · 2017

The neutron instruments suite, installed at the spallation neutron source of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), is reviewed. MLF has 23 neutron beam ports a…

Introductory Lectures on How to Produce Neutrons Open

K. Kino, Hitoshi Endo, K. Hirota, Yoshifumi Sakaguchi · 2017

Neutron Polarization Analysis for Biphasic Solvent Extraction Systems Open

Ryuhei Motokawa, Hitoshi Endo, Michihiro Nagao, William T. Heller · 2016

Here we performed neutron polarization analysis (NPA) of extracted organic phases containing complexes, comprised of Zr(NO₃)₄ and tri-n-butyl phosphate, which enabled decomposition of the intensity distribution of sma…

Inelastic and quasi-elastic neutron scattering spectrometers in J-PARC Open

Hideki Seto, Shinichi Itoh, Tetsuya Yokoo, Hitoshi Endo, Kenji Nakajima , et al. · 2016

J-PARC, Japan Proton Accelerator Research Complex provides short pulse proton beam at a repetition rate 25Hz and the maximum power is expected to be 1MW. Materials and Life Science Experimental Facility (MLF) has 23 neutron beam ports and …

Neutron Spin Echo Spectrometers at J-PARC (BL06 VIN ROSE) Open

Hitoshi Endo, Masahiro Hino, T. Oda · 2016

The neutron spin echo (NSE) technique is an essential spectroscopic method, which has achieved the highest neutron energy resolution at the present moment. NSE with a pulsed neutron source makes it possible to scan a wide spatiotemporal sp…

Small-angle neutron scattering study of specific interaction and coordination structure formed by mono-acetyl-substituted dibenzo-20-crown-6-ether and cesium ions Open

Ryuhei Motokawa, T. Kobayashi, Hitoshi Endo, Takashi Ikeda, Tsuyoshi Yaita , et al. · 2015

This study uses small-angle neutron scattering (SANS) to elucidate the coordination structure of the complex of mono-acetyl-substituted dibenzo-20-crown-6-ether (ace-DB20C6) with cesium ions (Cs⁺). SANS profiles obtained for the…

Spin Fluctuations from Hertz to Terahertz on a Triangular Lattice Open

Yusuke Nambu, J. S. Gardner, D. E. MacLaughlin, Chris Stock, Hitoshi Endo , et al. · 2015

The temporal magnetic correlations of the triangular-lattice antiferromagnet NiGa_{2}S_{4} are examined through 13 decades (10^{-13}-1 sec) using ultrahigh-resolution inelastic neutron scattering, muon spin relaxation, and ac and nonlinear…

Direct Gold Plating Selectively on UV Modified Polymer Film Using Tiopronin-Gold Open

Hitoshi Endo, Katsuhiko TASHIRO, Hengyi Ma, Shoei Mizuhashi, Taibo Yamamoto , et al. · 2015

An economic and low toxicity gold plating process for bio-compatible device fabrication was investigated. A tiopronin-gold complex altered by mercaptothiodiazole or mercaptotriazole derivatives gave a form of the complex that could be redu…

Erratum: Direct Gold Plating Selectively on UV Modified Polymer Film Using Tiopronin-Gold [<i>J. Electrochem. Soc.</i>, 162, D193 (2015)] Open

Hitoshi Endo, Katsuhiko TASHIRO, Hengyi Ma, Shoei Mizuhashi, Taibo Yamamoto , et al. · 2015

IV-1-2　Polymer Dynamics in Solution Explored by Quasielastic Neutron Scattering Open

Hitoshi Endo · 2015

中性子準弾性散乱，特に中性子スピンエコー法を用いての高分子溶液ダイナミクス研究について解説する。観測結果を定量的に評価するのに必要な中間相関関数について，Rouse・Zimm・レプテーションの各理論に基づいてその概略を説明する。また，中性子スピンエコー分光器の高度化が高分子溶液ダイナミクス研究の進展に大きく寄与した事実を，実験例で紹介する。

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