Toru Matsumura

Proposal of the KOTO II experiment

J. R. Fry, Evgueni Goudzovski, Cristina Lazzeroni, Thomas Reddel et autres

International audience

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Observation of Zigzag-Shaped Magnetic Domain Boundaries in Granular Perpendicular Magnetic Recording Media Using Alternating Magnetic Force Microscopy

Marina V. Makarova, Hanamichi Tanaka, Hiroshi Sonobe, Toru Matsumura et autres

In granular media for perpendicular magnetic recording, zigzag-shaped magnetic domain boundaries form between magnetic grains isolated by a non-magnetic grain boundary phase. They are the main source of jitter noise caused by the position fluctuation of magnetic bit transitions. The imaging of …

jp (code pays fourni par la source)

High-Frequency Magnetic Field Energy Imaging of Magnetic Recording Head by Alternating Magnetic Force Microscopy with Superparamagnetic Tip

Marina V. Makarova, Kaichi Suzuki, Hiroshi Sonobe, Toru Matsumura et autres

Recent progress of high frequency (HF) magnetic materials and devices requires the precise imaging of HF magnetic fields. We have designed Alternating Magnetic Field Microscopy (A-MFM) with a superparamagnetic (SP) tip as a method to image HF magnetic field energy (MFE) near …

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High-Frequency Magnetic Field Energy Imaging of Magnetic Recording Head by Alternating Magnetic Force Microscopy (A-MFM) with Superparamagnetic Tip

Marina V. Makarova, Kaichi Suzuki, Hirofumi Kon, Paritosh Dubey et autres

Recent progress in the development of high-frequency (HF) magnetic materials and devices requires the HF imaging of magnetic field and magnetic field response with high spatial resolution. In this work, we proposed HF Alternating Magnetic Force Microscopy (A-MFM) with a superparamagnetic tip …

jp, cz (code pays fourni par la source)

3D Magnetic Field Vector Measurement by Magneto-Optical Imaging

Hotaka Sakaguchi, Riku Oya, Shu Wada, Toru Matsumura et autres

Magneto-optical (MO) imaging using MO imaging plates is a magnetic imaging technique that enables real-time measurements and is expected to be used for non-destructive testing and for observing the magnetic domains of magnetic materials. In this study, we propose a quantitative measurement …

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Study of the $K_L \!\to\! π^0 ν\overlineν$ Decay at the J-PARC KOTO Experiment

J. K. Ahn, Brian Beckford, M. Campbell, S. H. Chen et autres

CsI calorimeter for the J-PARC KOTO experiment

K. Satô, J.W. Lee, Satomi Banno, M. Campbell et autres

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High resolution Detection of Zigzag Magnetic Reversal Boundary of Perpendicular Magnetic Recording Media Film by Alternating Magnetic Force Microscopy

Hanamichi Tanaka, Shu Wada, Toru Matsumura, Hitoshi Saito

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Development of a new inorganic crystal GAGG for the calorimeter capable of the separation between neutrons and gammas

K. Shiomi, M. Togawa, Y. Tajima, Toru Matsumura et autres

A new inorganic crystal Gd 3 Al 2 Ga 3 O 12 is being developed. This crystal is suitable for electromagnetic calorimeters used in high energy physics experiments because the time constant of light emission is small (90 ns) and the light …

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Construction of Six spans continuous steel box rigid frame Bridge considering deformation by the temperature variations

shusaku takaoka, atsunori tanaka, shuhei hanano, eisuke doi et autres

Conversion of Measuring Magnetic Field Direction by Tip Transfer Function on Magnetic Field Microscopy

Shu Wada, Yue Zhao, Toru Matsumura, Hitoshi Saito

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Development of a novel scheme for rapid screening for environmental micropollutants in emergency situations (REPE) and its application for comprehensive analysis of tsunami sediments deposited by the great east Japan earthquake

Yuki Matsuo, Takashi Miyawaki, Kiwao Kadokami, Kunihiko Nakai et autres

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