Výsledky vyhledávání - "Eiichi Kuramoto"

A study of the interaction between irradiation induced-defect and a line dislocation in bcc-iron

Autor: Eiichi Kuramoto, Taira Okita, S. Fujita, Naoto Sekimura

Publikováno v: Journal of Nuclear Materials. :93-96

We evaluate the interaction between a line edge dislocation and a self-interstitial atom cluster in α-iron by the molecular dynamics (MD) calculation. When the distance between the slip plane of the dislocation and the cluster centroid is more than

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ee400e096511d35ed6d8c452baf68aa
https://doi.org/10.1016/j.jnucmat.2008.12.067

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Thermally activated transport of a dislocation loop within an elastic model

Autor: Kazuhito Ohsawa, Eiichi Kuramoto

Publikováno v: Journal of Nuclear Materials. :327-331

We report thermally activated transport of a dislocation loop in terms of a line tension model, where the dislocation line is assumed to be a flexible string. According to conventional rate theory, the features of thermal activation are determined by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6db2510609bc9fed7c794ca6fd6e9f79
https://doi.org/10.1016/j.jnucmat.2007.03.132

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Nano-size Cu cluster formation in iron by Cu ion implantations

Autor: Akihiro Iwase, Eiichi Kuramoto, Fuminobu Hori, Shinji Tanaka

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 245:180-183

Positron annihilation lifetime (PAL) and coincidence Doppler broadening (CDB) experiments have been performed to study the interaction between copper atoms and vacancies, and the formation process of nano-sized copper particles in Fe and Fe–Cu allo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b06b81f1e7845df11f4190be2e2ca7e
https://doi.org/10.1016/j.nimb.2005.11.098

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Irradiation-induced vacancy and Cu aggregations in Fe–Cu model alloys of reactor pressure vessel steels: state-of-the-art positron annihilation spectroscopy

Autor: Z. Tang, Minoru Takenaka, Masayuki Hasegawa, Eiichi Kuramoto, Toshinobu Chiba, Yasuyoshi Nagai

Publikováno v: Philosophical Magazine. 85:467-478

Theoretical and experimental aspects of positron annihilation studies of precipitate-relevant phenomena in Fe–Cu model alloys of reactor pressure vessel steels are discussed. Although the positrons are thought, in general, to be insensitive to the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0775bedbe4ad2ba506c28ee23f50e322
https://doi.org/10.1080/02678370412331370215

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Analysis of the Thermal Activation of High-Mobility Dislocation Loops

Autor: Kazuhito Ohsawa, Eiichi Kuramoto

Publikováno v: MATERIALS TRANSACTIONS. 46:457-462

We report thermally activated transport of highly mobile dislocation loops in terms of a line tension model where the dislocation loops are assumed to be a flexible string. The activation energy and transition rate are calculated on the basis of a cl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::03443442bd0b4d539c0dbdb8769247e7
https://doi.org/10.2320/matertrans.46.457

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Interrelation between Dislocation Loops and an Edge Dislocation

Autor: Kazuhito Ohsawa, T. Tsutsumi, Eiichi Kuramoto

Publikováno v: MATERIALS TRANSACTIONS. 46:450-456

Since it has recently become an important subject to study the interrelation between a dislocation loop and a straight edge dislocation because of dynamic behaviors of small dislocation loops under irradiation condition, the simulation studies were m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5bb22965004c61e6b6399a691b2348c
https://doi.org/10.2320/matertrans.46.450

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Computer simulation of the dynamical and thermally activated motion of interstitial clusters in Fe

Autor: Kazuhito Ohsawa, J Imai, K Obata, T. Tsutsumi, Eiichi Kuramoto

Publikováno v: Journal of Nuclear Materials. :1223-1227

Using the computer simulation technique various properties of interstitial clusters (bundle of crowdions) in Fe has been investigated. The actual shapes of the hexagonal loops were studied in detail and it was found that the direction of each segment

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1285db6e0ad70f97d1b794b2cd913c4c
https://doi.org/10.1016/j.jnucmat.2004.04.289

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How can we bridge the multiple timescale models of radiation damage processes?

Autor: Eiichi Kuramoto, Kazunori Morishita, Naoki Soneda, Naoto Sekimura, Masato Hiratani, Taira Okita

Publikováno v: Journal of Plasma and Fusion Research. 80:318-324

Recent modeling efforts on the radiation damage over multi-time scales are summarized. Under irradiation, materials experience multiple physical processes such as collision, cooling, thermalization and diffusions that extend over vast range of tempor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3bb86846880d7d4548ad815490ce207e
https://doi.org/10.1585/jspf.80.318

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