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3,365 results on '"Matsuo S"'

1. Detection of current-sheet and bipolar ion flows in a self-generated antiparallel magnetic field of laser-produced plasmas for magnetic reconnection research

Author

Morita, T., Matsukiyo, S., Isayama, S., Kojima, T., Matsuo, S., Pan, Y., Yamazaki, R., Tanaka, S. J., Aihara, K., Sato, Y., Shiota, J., Tomita, K., Takezaki, T., Kuramitsu, Y., Sakai, K., Egashira, S., Ishihara, H., Kuramoto, O., Matsumoto, Y., Maeda, K., and Sakawa, Y.

Subjects
Physics - Plasma Physics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

Magnetic reconnection in laser-produced magnetized plasma is investigated by using optical diagnostics. The magnetic field is generated via Biermann battery effect, and the inversely directed magnetic field lines interact with each other. It is shown by self-emission measurement that two colliding plasmas stagnate on a mid-plane forming two planar dense regions, and that they interact later in time. Laser Thomson scattering spectra are distorted in the direction of the self-generated magnetic field, indicating asymmetric ion velocity distribution and plasma acceleration. In addition, the spectra perpendicular to the magnetic field show different peak intensity, suggesting an electron current formation. These results are interpreted as magnetic field dissipation, reconnection, and outflow acceleration. Two-directional laser Thomson scattering is, as discussed here, a powerful tool for the investigation of microphysics in the reconnection region., Comment: 13 pages, 12 figures, Physical Review E, in press

Published
2022
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3. Implosion and heating experiments of fast ignition targets by Gekko-XII and LFEX lasers

Author

Shiraga H., Fujioka S., Nakai M., Watari T., Nakamura H., Arikawa Y., Hosoda H., Nagai T., Koga M., Kikuchi H., Ishii Y., Sogo T., Shigemori K., Nishimura H., Zhang Z., Tanabe M., Ohira S., Fujii Y., Namimoto T., Sakawa Y., Maegawa O., Ozaki T., Tanaka K.A., Habara H., Iwawaki T., Shimada K., Key M., Norreys P., Pasley J., Nagatomo H., Johzaki T., Sunahara A., Murakami M., Sakagami H., Taguchi T., Norimatsu T., Homma H., Fujimoto Y., Iwamoto A., Miyanaga N., Kawanaka J., Kanabe T., Jitsuno T., Nakata Y., Tsubakimoto K., Sueda K., Kodama R., Kondo K., Morio N., Matsuo S., Kawasaki T., Sawai K., Tsuji K., Murakami H., Sarukura N., Shimizu T., Mima K., and Azechi H.

Subjects
Physics, QC1-999
Abstract

The FIREX-1 project, the goal of which is to demonstrate fuel heating up to 5 keV by fast ignition scheme, has been carried out since 2003 including construction and tuning of LFEX laser and integrated experiments. Implosion and heating experiment of Fast Ignition targets have been performed since 2009 with Gekko-XII and LFEX lasers. A deuterated polystyrene shell target was imploded with the 0.53- μm Gekko-XII, and the 1.053- μm beam of the LFEX laser was injected through a gold cone attached to the shell to generate hot electrons to heat the imploded fuel plasma. Pulse contrast ratio of the LFEX beam was significantly improved. Also a variety of plasma diagnostic instruments were developed to be compatible with harsh environment of intense hard x-rays (γ rays) and electromagnetic pulses due to the intense LFEX beam on the target. Large background signals around the DD neutron signal in time-of-flight record of neutron detector were found to consist of neutrons via (γ,n) reactions and scattered gamma rays. Enhanced neutron yield was confirmed by carefully eliminating such backgrounds. Neutron enhancement up to 3.5 × 107 was observed. Heating efficiency was estimated to be 10–20% assuming a uniform temperature rise model.

Published
2013
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4. Gate tunable parallel double quantum dot in InAs double-nanowire junctions

Author

Baba, S., Matsuo, S., Kamata, H., Deacon, R. S., Li, A. Oiwa K., Xu, H. Q., and Tarucha, S.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We report fabrication and measurement of a device where closely-placed two parallel InAs nanowires (NWs) are contacted by source and drain normal metal electrodes. Established technique includes selective deposition of double nanowires onto a previously defined gate region. By tuning the junction with the finger bottom gates, we confirmed the formation of parallel double quantum dots, one in each NW, with a finite electrostatic coupling between each other. With the fabrication technique established in this study, devices proposed for more advanced experiments, such as Cooper-pair splitting and the observation of parafermions, can be realized.

Published
2017
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5. Termination without global capture: electrocardiographic and anatomical characteristics using 3D-electroanatomical mapping system in reentrant ventricular tachycardia

Author

Katsume, Y, primary, Hasegawa, K, additional, Ikewaki, H, additional, Mohri, T, additional, Tashiro, M, additional, Nonoguchi, N, additional, Hoshida, K, additional, Togashi, I, additional, Ueda, A, additional, Matsuo, S, additional, Sato, T, additional, Soejima, K, additional, and Stevenson, W G, additional

Published
2024
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7. Fast Purcell-enhanced single photon source in 1,550-nm telecom band from a resonant quantum dot-cavity coupling

Author

Birowosuto, M. D., Sumikura, H., Matsuo, S., Taniyama, H., van Veldhoven, P. J., Nötzel, R., and Notomi, M.

Subjects
Physics - Optics, Condensed Matter - Materials Science, Quantum Physics
Abstract

High-bit-rate nanocavity-based single photon sources in the 1,550-nm telecom band are challenges facing the development of fibre-based long-haul quantum communication networks. Here we report a very fast single photon source in the 1,550-nm telecom band, which is achieved by a large Purcell enhancement that results from the coupling of a single InAs quantum dot and an InP photonic crystal nanocavity. At a resonance, the spontaneous emission rate was enhanced by a factor of 5 resulting a record fast emission lifetime of 0.2 ns at 1,550 nm. We also demonstrate that this emission exhibits an enhanced anti-bunching dip. This is the first realization of nanocavity-enhanced single photon emitters in the 1,550-nm telecom band. This coupled quantum dot cavity system in the telecom band thus provides a bright high-bit-rate non-classical single photon source that offers appealing novel opportunities for the development of a long-haul quantum telecommunication system via optical fibres., Comment: 16 pages, 4 figures

Published
2012
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8. Odd-frequency Cooper pairs and zero-energy surface bound states in superfluid 3He

Author

Higashitani, S., Matsuo, S., Nagato, Y., Nagai, K., Murakawa, S., Nomura, R., and Okuda, Y.

Subjects
Condensed Matter - Superconductivity
Abstract

We study the odd-frequency Cooper pairs formed near the surface of superfluid 3He. The odd-frequency pair amplitude is closely related to the local density of states in the low energy limit. We derive a formula relating explicitly the two quantities. This formula holds for arbitrary boundary condition at the surface. We also present some numerical results on the surface odd-frequency pair amplitude in superfluid 3He-B. Those analytical and numerical results allow one to interpret the midgap surface density of states, observed recently by transverse acoustic impedance measurements on superfluid 3He-B, as the manifestation of the surface odd-frequency state., Comment: 5 pages, 3 figures, published in Phys. Rev. B 85, 024524 (2012)

Published
2012
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9. P1.25-01 Real-World Data of Completely Resected Lung Adenocarcinoma Harboring Common EGFR Mutation in Japan (CReGYT-01 EGFR study)

Author

Katsumata, S., primary, Hamada, A., additional, Haratake, N., additional, Takamori, S., additional, Takanashi, Y., additional, Hayasaka, K., additional, Nomura, K., additional, Toda, M., additional, Kaiho, T., additional, Hoshino, H., additional, Ozawa, H., additional, Matsuo, S., additional, Suzuki, J., additional, Nakahashi, K., additional, Fujino, K., additional, Takegahara, K., additional, Kinoshita, I., additional, Takada, K., additional, Yoshikawa, M., additional, Tomioka, Y., additional, Koki, Y., additional, Shimokawa, M., additional, Soh, J., additional, Shiono, S., additional, and Ohde, Y., additional

Published
2023
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10. Effects of hydrogen concentration in ablator material on stimulated Raman scattering, two-plasmon decay, and hot electrons for direct-drive inertial confinement fusion

Author

Kawasaki, K., primary, Cristoforetti, G., additional, Idesaka, T., additional, Hironaka, Y., additional, Tanaka, D., additional, Batani, D., additional, Fujioka, S., additional, Gizzi, L. A., additional, Hata, M., additional, Johzaki, T., additional, Katagiri, K., additional, Kodama, R., additional, Matsuo, S., additional, Nagatomo, H., additional, Nicolai, Ph., additional, Ozaki, N., additional, Sentoku, Y., additional, Takizawa, R., additional, Yogo, A., additional, Yamada, H., additional, and Shigemori, K., additional

Published
2023
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15. Design of a Right Ventricular Simulator for the Evaluation of Artificial Pulmonary Valve

Author

Tsuboko, Y., Matsuo, S., Shiraishi, Y., Miura, H., Yamada, A., Hashem, Mohamed O., Ito, T., Sano, K., Taira, Y., Akutsu, T., Feng, Z., Umezu, Mitsuo, Yamagishi, M., Saiki, Y., Yambe, T., MAGJAREVIC, Ratko, Editor-in-chief, Ładyzynsk, Piotr, Series editor, Ibrahim, Fatimah, Series editor, Lackovic, Igor, Series editor, Rock, Emilio Sacristan, Series editor, and Goh, James, editor

Published
2014
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21. Detection of current-sheet and bipolar ion flows in a self-generated antiparallel magnetic field of laser-produced plasmas for magnetic reconnection research

Author

Morita, T., primary, Kojima, T., additional, Matsuo, S., additional, Matsukiyo, S., additional, Isayama, S., additional, Yamazaki, R., additional, Tanaka, S. J., additional, Aihara, K., additional, Sato, Y., additional, Shiota, J., additional, Pan, Y., additional, Tomita, K., additional, Takezaki, T., additional, Kuramitsu, Y., additional, Sakai, K., additional, Egashira, S., additional, Ishihara, H., additional, Kuramoto, O., additional, Matsumoto, Y., additional, Maeda, K., additional, and Sakawa, Y., additional

Published
2022
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23. EP.06C.03 Clinicopathological Analysis of Each EGFR Status in Surgically Resected Lung Adenocarcinoma: A Real-World Study (CReGYT-01 EGFR)

Author

HOSHINO, H., Katsumata, S., Hamada, A., Haratake, N., Nomura, K., Fujino, K., Yoshikawa, M., Suzawa, K., Shien, K., Suda, K., Ohara, S., Fukuda, S., Kinoshita, I., Hayasaka, K., Notsuda, H., Takamori, S., Muto, S., Takanashi, Y., Mizuno, K., Kawase, A., Hayakawa, T., Sekihara, K., Toda, M., Matsuo, S., Takegahara, K., Hashimoto, M., Nakahashi, K., Endo, M., Ozawa, H., Fujikawa, R., Tomioka, Y., Namba, K., Matsubara, T., Suzuki, J., Watanabe, H., Takada, K., Toyoda, T., Nakasone, S., Kawasaki, H., Shimokawa, M., Kouki, Y., Shiono, S., Soh, J., and Ohde, Y.

Published
2024
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26. P2.07A.03 Prognostic Analysis of Completely Resected Lung Adenocarcinoma with Uncommon EGFR Mutations: CReGYT-01 EGFR Study

Author

Hayasaka, K., Haratake, N., Notsuda, H., Katsumata, S., Hamada, A., Nomura, K., Fujino, K., Yoshikawa, M., Suzawa, K., Shien, K., Suda, K., Ohara, S., Fukuda, S., Kinoshita, I., Takamori, S., Muto, S., Takanashi, Y., Mizuno, K., Kawase, A., Hayakawa, T., Sekihara, K., Toda, M., Matsuo, S., Takegahara, K., Hashimoto, M., Nakahashi, K., Endo, M., Ozawa, H., Fujikawa, R., Tomioka, Y., Namba, K., Matsubara, T., Suzuki, J., Watanabe, H., Takada, K., Hoshino, H., Toyoda, T., Koki, Y., Shiono, S., Shimokawa, M., Soh, J., Ohde, Y., and Okada, Y.

Published
2024
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28. Integrated experiments of fast ignition targets by Gekko-XII and LFEX lasers

Author

Shiraga, H., Fujioka, S., Nakai, M., Watari, T., Nakamura, H., Arikawa, Y., Hosoda, H., Nagai, T., Koga, M., Kikuchi, H., Ishii, Y., Sogo, T., Shigemori, K., Nishimura, H., Zhang, Z., Tanabe, M., Ohira, S., Fujii, Y., Namimoto, T., Sakawa, Y., Maegawa, O., Ozaki, T., Tanaka, K.A., Habara, H., Iwawaki, T., Shimada, K., Nagatomo, H., Johzaki, T., Sunahara, A., Murakami, M., Sakagami, H., Taguchi, T., Norimatsu, T., Homma, H., Fujimoto, Y., Iwamoto, A., Miyanaga, N., Kawanaka, J., Jitsuno, T., Nakata, Y., Tsubakimoto, K., Sueda, K., Morio, N., Matsuo, S., Kawasaki, T., Sawai, K., Tsuji, K., Murakami, H., Kanabe, T., Kondo, K., Kodama, R., Sarukura, N., Shimizu, T., Mima, K., and Azechi, H.

Published
2012
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35. Robotic Deburring Task Design Based on the Nature of Burr

Author

Mizukawa, M., Mitsuya, E., Ohara, S., Iwaki, S., Matsuo, S., Shakunaga, T., Okada, T., Kaliszky, Sandor, editor, Sayir, Mahir, editor, Schneider, Wilhelm, editor, Bianchi, Giovanni, editor, Tasso, Carlo, editor, Morecki, A., editor, Bianchi, G., editor, and Jaworek, K., editor

Published
1995
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43. Asymptotic Genetic Response Due to Two-Stage Genomic Index Selection Derived from Correlated or Independent Indices during Both Stages

Author

Togashi K, Adachi K, Kurogi K, Watanabe T, Toda S, Yasumori Yasumori T, Matsubara S, Hirohama K, Takahashi T, Matsuo S, and Ijichi T

Abstract

We developed equations to predict the asymptotic response due to two-stage selection, where first-stage selection was performed by using GEBVs based solely on genotypes and second-stage selection was performed with GEBVs that combined genotypes and phenotypes. The situation that we considered involved four-path selection executed as sires to breed sons, sires to breed daughters, dams to breed sons, and dams to breed daughters. We established two procedures to predict the response. The first incorporated correlated indices during the first and second-stage selections of two-stage selection. The other procedure used independent indices during two-stage selection. The response per generation in the initial generation was greater for the correlated indices than for the independent indices. However, the asymptotic response per generation was slightly greater for the independent indices than for the correlated indices. The asymptotic response per generation was lower during two-stage selection than during single-stage selection. However, the asymptotic response per year was greater for two-stage selection than for single-stage selection. In addition, that trend was more conspicuous when the economic weight was 1:3 for the first (h2 =0.3) to second (h2 =0.05) index trait compared with economic weights of 1:1 and 3:1. However, the magnitude of the response to the aggregate genotype-relative not to single-stage selection but to absolute magnitude was greater at an economic weight of 3:1 than at those of 1:1 and 1:3. The reduction in genetic variance from the initial to an asymptotic generation was greater for a scenario where young parents selected at the first-stage accounted for 30% of all parents in two-stage selection than where they accounted for 70%. The reduction in genetic variance of the aggregate genotype over generations was smaller for independent indices than correlated indices during two-stage selection. Our new formula for predicting genetic response applies to any combination of accuracies of GEBVs and intensities of selection. Therefore, the formula presented is a general equation for predicting genetic response over generations due to two-stage genomic index selection.

Published
2021

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