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Journal Articles

Magnetic patterning of FeRh thin films by energetic light ion microbeam irradiation

Koide, Tetsuya*; Sato, Takahiro; Koka, Masashi; Saito, Yuichi; Kamiya, Tomihiro; Okochi, Takuo*; Kotsugi, Masato*; Kinoshita, Toyohiko*; Nakamura, Tetsuya*; Iwase, Akihiro*; et al.

Japanese Journal of Applied Physics, 53(5S1), p.05FC06_1 - 05FC06_4, 2014/05

 Times Cited Count:9 Percentile:43.85(Physics, Applied)

We previously reported that the magnetic state of FeRh can be controlled by irradiation with ion beams. In this paper, we evaluate possibility of magnetic patterning on FeRh thin films using energetic light ion microbeam irradiation with various shapes and dimensions. Proton microbeam irradiation with 2 MeV was performed at JAEA-Takasaki to produce micron-sized magnetic patterns. XMCD-PEEM observation was performed at SPring8 to confirm the synthesized magnetic patterns. As a result, the XMCD-PEEM images of the various micrometer sized patters in FeRh film were observed using 2 MeV H ion beam. The observed bright regions are considered to have ferromagnetic spin orders, in contrast that the gray areas have anti-ferromagnetic spin order. Since the brightness of the PEEM images is strongly correlated with the magnetization of the samples, we reveal that the magnetic state in local regions of the FeRh thin films can be controlled by changing the ion fluences.

Journal Articles

MFM observation of micrometer-sized magnetic patterns produced by heavy ion microbeam irradiation in FeRh films

Aiko, Kazuma*; Toki, Atsushi*; Matsui, Toshiyuki*; Iwase, Akihiro*; Sato, Takahiro; Takano, Katsuyoshi*; Koka, Masashi; Saito, Yuichi; Kamiya, Tomihiro

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 133, 2013/01

JAEA Reports

Examination concerning application of ACROSS to engineering technology of the MIU Project; Final report

Hasegawa, Ken; Kunitomo, Takahiro; Hashizume, Shigeru; Horiuchi, Yasuharu; Matsui, Hiroya

JAEA-Evaluation 2012-001, 117 Pages, 2012/07

JAEA-Evaluation-2012-001.pdf:15.47MB

ACROSS has been developed to acquire the detailed information on the tectonically active zone. The technology developed here, the transmission and reception technique, the data analysis and the interpretation technique of the ACROSS signal for example, is able to use in seismology but also in other fields. We considered the ACROSS technology may apply to the engineering technology of the MIU project, for example, to the geological environment monitoring around the shafts and the strength assessment of the shaft concrete lining. Its examination was made in the three years period from fiscal year 2007 to 2009. However, it was concluded that we required another two years of observation to evaluate the applicability of the ACROSS as a technology to monitor the geological environment around the shafts and research galleries. In this report, we describe the evaluation result of the ACROSS based on the data observed by the end of 2011.

Journal Articles

MFM and PEEM observation of micrometre-sized magnetic dot arrays fabricated by ion-microbeam irradiation in FeRh thin films

Aiko, Kazuma*; Toki, Atsushi*; Matsui, Toshiyuki*; Iwase, Akihiro*; Sato, Takahiro; Takano, Katsuyoshi*; Koka, Masashi; Saito, Yuichi; Kamiya, Tomihiro; Okochi, Takuo*; et al.

Journal of Synchrotron Radiation, 19(2), p.223 - 226, 2012/03

 Times Cited Count:6 Percentile:35.76(Instruments & Instrumentation)

JAEA Reports

Examination concerning application of ACROSS to engineering technology of the MIU project; Annual report, fiscal year 2009

Hasegawa, Ken; Kunitomo, Takahiro; Nakajima, Takahiro*; Asai, Hideaki*; Iyatomi, Yosuke; Matsui, Hiroya

JAEA-Evaluation 2011-001, 150 Pages, 2011/06

JAEA-Evaluation-2011-001.pdf:28.92MB

ACROSS has developed to acquire the detailed information on the tectonically active zone. The technology for example the transmission and receiving technique, the data analysis and the interpretation technique of the ACROSS signal is able to apply not only to seismology but also to other field. We considered the ACROSS technology may apply to the engineering technology of the MIU project, for example monitoring of the change of the geological environment around shafts and also the strength of the shaft concrete itself. It is planned that the examination for three years will be made from fiscal year 2007. The first year is expansion of the network of observation stations, the second year is data acquisition and last year is the analysis of data and evaluation of the ACROSS. In this report, we describe the results of fundamental studies of the ACROSS and the processing results obtained from the ACROSS observation stations which were prepared in fiscal year 2007 and 2008, also describe the current evaluation results of the ACROSS.

Journal Articles

Micrometer-sized magnetic patterning of FeRh films using an energetic ion microbeam

Fujita, Naoki*; Matsui, Toshiyuki*; Kosugi, Shinya*; Sato, Takahiro; Saito, Yuichi; Takano, Katsuyoshi; Koka, Masashi; Kamiya, Tomihiro; Seki, Shu*; Iwase, Akihiro*

Japanese Journal of Applied Physics, 49(6), p.060211_1 - 060211_3, 2010/06

 Times Cited Count:11 Percentile:46.09(Physics, Applied)

JAEA Reports

Examination concerning application of ACROSS to engineering technology of the MIU project; Annual report, fiscal year 2008

Hasegawa, Ken; Kunitomo, Takahiro; Nakajima, Takahiro; Asai, Hideaki; Iyatomi, Yosuke; Matsui, Hiroya

JAEA-Evaluation 2009-006, 120 Pages, 2010/01

JAEA-Evaluation-2009-006.pdf:32.94MB

ACROSS (Accurately Controlled Routinely Operated Signal System) has developed to acquire the detailed information on the tectonically active zone. The technology for example the transmission and receiving technique, the data analysis and the interpretation technique of the ACROSS signal, is able to apply not only to seismology but also to other field. We considered the ACROSS technology may apply to the engineering technology of the MIU project, for example monitoring of the change of the geological environment around shafts and also the strength of the shaft concrete itself. It is planned that the examination for three years will be made from fiscal year 2007. The first year is expansion of the network of observation stations, the second year is data acquisition and last year is the analysis of data and evaluation of the ACROSS. In this report, we describe the results of fundamental studies of the ACROSS and the preliminary processing results obtained from the ACROSS observation stations which were prepared in fiscal year 2007 and 2008.

Journal Articles

Radiation-induced chemical evolution of biomolecules

Nakagawa, Kazumichi*; Matsui, Takahiro*; Izumi, Yudai*; Agui, Akane; Tanaka, Masahito*; Muro, Takayuki*

Radiation Physics and Chemistry, 78(12), p.1198 - 1201, 2009/12

 Times Cited Count:3 Percentile:26.15(Chemistry, Physical)

Chemical-evolution in glycilglycine (Gly2) films irradiated by 146 nm light was studied. It was found that quantum efficiency of chemical evolution from Gly2 to glycilglycilglycine (Gly3) is smaller than that to glycilglycilglycilglycine (Gly4) due to the multiple step of reaction. From natural circular dichroism spectra measurements for serine and alanine films, we found the splitting of 1s$$rightarrow$$$$pi$$$$^{*}$$ transitions in the energy region of oxygen 1s.

JAEA Reports

Examination concerning application of ACROSS to engineering technology of the MIU project; Annual report, fiscal year 2007

Hasegawa, Ken; Kunitomo, Takahiro; Nakajima, Takahiro; Kumazawa, Mineo*; Kuroda, Hidetaka*; Iyatomi, Yosuke; Asai, Hideaki; Matsui, Hiroya

JAEA-Evaluation 2008-002, 60 Pages, 2009/03

JAEA-Evaluation-2008-002.pdf:4.92MB

We considered the ACROSS(Accurately Controlled Routinely Operated Signal System)technology may apply to the engineering technology of the MIU project, for example monitoring of the change of the geological environment around shafts and also the strength of the shaft concrete itself. It is planned that the examination for three years will be made from fiscal year 2007. The first year is expansion of the network of observation stations, the second year is data acquisition and last year is the analysis of data and evaluation of the ACROSS. In this report, we describe the results of fundamental studies of the ACROSS and the preparation of the ACROSS observation stations, performed in fiscal year 2007.

JAEA Reports

Report of Horonobe technical review meetings (FY 2004); 1st to 4th meetings (Document on present state of affairs)

Shirato, Nobuaki*; Matsui, Hiroya; Morioka, Hiroshi; Hatanaka, Koichiro; Takeuchi, Ryuji; Hatakeyama, Nobuya; Ohara, Hidefumi; Nakajima, Takahiro; Kunitomo, Takahiro

JNC TN5440 2005-001, 412 Pages, 2005/06

JNC-TN5440-2005-001.pdf:20.87MB

We held Horonobe technical review meeting 4 times a year. The first meeting is for the plan of Horonobe underground research laboratory and others. The secound meeting is for geology of Horonobe area and modeling study and data acquisition for safety assessment methodology and others. The third meeting is for ventilation network analyses on URL plan. The fourth meeting is for the remote monitoring system using ACROSS. This report is records of these meetings.

Journal Articles

Chemical evolution of amino acid induced by soft X-ray with synchrotron radiation

Kaneko, Fusae*; Tanaka, Masahito*; Narita, Satoru*; Kitada, Tomo*; Matsui, Takahiro*; Nakagawa, Kazumichi*; Agui, Akane; Fujii, Kentaro; Yokoya, Akinari

Journal of Electron Spectroscopy and Related Phenomena, 144-147, p.291 - 294, 2005/06

 Times Cited Count:18 Percentile:65.08(Spectroscopy)

no abstracts in English

Journal Articles

Evaluation of critial current performance of 13 T-46 kA steel-jacketed Nb$$_{3}$$Al conductor

Koizumi, Norikiyo; Azuma, Katsunori*; Tsuchiya, Yoshinori; Matsui, Kunihiro; Takahashi, Yoshikazu; Nakajima, Hideo; Nishijima, Gen; Nunoya, Yoshihiko; Ando, Toshinari; Isono, Takaaki; et al.

Fusion Engineering and Design, 58-59, p.1 - 5, 2001/11

 Times Cited Count:2 Percentile:20.38(Nuclear Science & Technology)

no abstracts in English

Journal Articles

First test results for the ITER central solenoid model coil

Kato, Takashi; Tsuji, Hiroshi; Ando, Toshinari; Takahashi, Yoshikazu; Nakajima, Hideo; Sugimoto, Makoto; Isono, Takaaki; Koizumi, Norikiyo; Kawano, Katsumi; Oshikiri, Masayuki*; et al.

Fusion Engineering and Design, 56-57, p.59 - 70, 2001/10

 Times Cited Count:17 Percentile:76.5(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Progress of the ITER central solenoid model coil programme

Tsuji, Hiroshi; Okuno, Kiyoshi*; Thome, R.*; Salpietro, E.*; Egorov, S. A.*; Martovetsky, N.*; Ricci, M.*; Zanino, R.*; Zahn, G.*; Martinez, A.*; et al.

Nuclear Fusion, 41(5), p.645 - 651, 2001/05

 Times Cited Count:55 Percentile:84.47(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Test results of ITER model coil; 13T-640MJ Nb$$_{3}$$S$$_{n}$$ pulse coil

Takahashi, Yoshikazu; Ando, Toshinari; Hiyama, Tadao; Nakajima, Hideo; Kato, Takashi; Sugimoto, Makoto; Isono, Takaaki; Oshikiri, Masayuki*; Kawano, Katsumi; Koizumi, Norikiyo; et al.

Teion Kogaku, 35(7), p.357 - 362, 2000/07

no abstracts in English

Journal Articles

Development of 46-kA Nb$$_{3}$$Sn conductor joint for ITER model coils

Takahashi, Yoshikazu; Nunoya, Yoshihiko; Nishijima, Gen; Koizumi, Norikiyo; Matsui, Kunihiro; Ando, Toshinari; Hiyama, Tadao; Nakajima, Hideo; Kato, Takashi; Isono, Takaaki; et al.

IEEE Transactions on Applied Superconductivity, 10(1), p.580 - 583, 2000/03

 Times Cited Count:20 Percentile:70.09(Engineering, Electrical & Electronic)

no abstracts in English

Oral presentation

Measurement of soft X-ray natural circular dichroism of amino acid

Izumi, Yudai*; Kitada, Tomo*; Kamohara, Masumi*; Kaneko, Fusae*; Matsui, Takahiro*; Nakagawa, Kazumichi*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*; Matsushita, Tomohiro*

no journal, , 

no abstracts in English

Oral presentation

Production of micrometer-sized magnetic domain patterns in FeRh films by heavy ion micro-beam irradiation

Iwase, Akihiro*; Matsui, Toshiyuki*; Toki, Atsushi*; Aiko, Kazuma*; Sato, Takahiro; Takano, Katsuyoshi*; Koka, Masashi; Saito, Yuichi; Kamiya, Tomihiro

no journal, , 

no abstracts in English

Oral presentation

Molecular dynamics study of cation and water dynamics on outer surface space in smectite-water system

Matsui, Naoki*; Okubo, Takahiro*; Tachi, Yukio; Sugiura, Yuki; Yotsuji, Kenji*

no journal, , 

no abstracts in English

19 (Records 1-19 displayed on this page)
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