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Awaji, Satoshi*; Namba, Masashi*; Watanabe, Kazuo*; Kai, Hideki*; Mukaida, Masashi*; Okayasu, Satoru
Journal of Applied Physics, 111(1), p.013914_1 - 013914_4, 2012/01
Times Cited Count：26 Percentile：69.58(Physics, Applied)The effect of 
-axis correlated pinning on the critical current density 
at low temperatures under high magnetic fields was investigated on the basis of the transport measurements of and irreversibility field B
properties of an ErBa
Cu
O
film with inclined columnar defects. The contribution of correlated pinning on decreased drastically with decreasing temperature under high magnetic fields above the matching field. At low temperatures, the presence of a matching field limited the pinning force for correlated pinning, while the ratio of the maximum pinning force of the correlated pinning to the random one was proportional to the inverse of B. In order to improve the critical current properties at low temperatures under high magnetic fields, an increase in the matching field and/or the introduction of strong random pinning are effective.
Awaji, Satoshi*; Namba, Masashi*; Watanabe, Kazuo*; Ito, Shun*; Aoyagi, Eiji*; Kai, Hideki*; Mukaida, Masashi*; Okayasu, Satoru
IEEE Transactions on Applied Superconductivity, 21(3), p.3192 - 3195, 2011/06
Times Cited Count：5 Percentile：33.23(Engineering, Electrical & Electronic)The flux pinning behaviors for the heavy ion irradiated Er123 films are investigated based on the detailed 
(
, 
, 
) properties. The double peaks of 
curves for //c appear in case of the matching field of 0.3 T along -axis and 1.7 T tilted from -axis. In addition, the peaks on () at = 0
(B//c), which originate from the columnar defects, decrease with increasing magnetic field but increase again near the irreversibility field. We found that the cooperation model of the -axis correlated and random pinning centers can describe the observed double peak behavior of (B) and the angular dependence of related to the correlated pinning.
Namba, Hideki; Tanaka, Atsushi; Ito, Hisayoshi
Nihon Genshiryoku Gakkai-Shi ATOMO
, 50(12), p.785 - 789, 2008/12
The outline of the quantum beam applied research, which attracts world-wide attention in recent years as a key technology for innovation, was introduced in the previous review article. The researches using charged particles and radio-isotopes (RIs), namely with 
rays, electron beams and ion beams, have the longest history in the application of quantum beam technology, and the results were used in wide range of activities in the fields of industry, agriculture and health care, as well as academic field. In this paper, the applications using charged particles and RIs in the fields of biotechnology, medical application, environment and energy will be introduced.
Namba, Hideki
Genshiryoku eye, 53(1), p.2 - 4, 2007/01
no abstracts in English
Taguchi, Mitsumasa; Zennyoji, Yoshihiro*; Takigami, Machiko*; Baldacchino, G.*; Kimura, Atsushi; Hiratsuka, Hiroshi*; Namba, Hideki; Kojima, Takuji
Radiation Physics and Chemistry, 75(5), p.564 - 571, 2006/03
Times Cited Count：6 Percentile：40.60(Chemistry, Physical)The suspended fine particles formed in aqueous phenol solution under high dose irradiation were studied using the MeV electron beam and 
Co -ray irradiations. The fine particle's size was 100-800 nm in diameter and became bigger at higher dose and lower dose rate. The distributions of the particle size became narrower for irradiation at higher dose rate. The fine particles were regarded to consist of molecules of about 1.9
10
molecular weight.
Yoshida, Yoichi*; Yang, J.*; Kondo, Takafumi*; Seki, Shuhei*; Kozawa, Takahiro*; Tagawa, Seiichi*; Shibata, Hiromi*; Taguchi, Mitsumasa; Kojima, Takuji; Namba, Hideki
JAEA-Review 2005-001, TIARA Annual Report 2004, p.183 - 185, 2006/01
A heavy-ion-pulse radiolysis technology was developed using a single-photon-counting system. In the system, the ion beam was injected a thin scintillator before irradiating the sample. The light emitted from the scintillator by the ion irradiation was used as analyzing source to detect the absorption of primary species in water. Measurement of time-dependent absorption of hydrated electrons in water was achieved using the system, which demonstrates the usefulness of this technique.
-nonylphenols in water and elimination of their estrogen activities by Co -ray irradiationKimura, Atsushi; Taguchi, Mitsumasa; Otani, Yoshimi*; Takigami, Machiko; Shimada, Yoshitaka*; Kojima, Takuji; Hiratsuka, Hiroshi*; Namba, Hideki
Radiation Physics and Chemistry, 75(1), p.61 - 69, 2006/01
Times Cited Count：13 Percentile：64.97(Chemistry, Physical)Decomposition of -Nonylphenols (NPs) in water at 1 
mol dm
was decreased exponentially with absorbed dose when NPs were irradiated by Co-rays. Two products having molecular weight of 236, presumably OH adducts of NPs, were detected by LC-MS analyses. The elimination of estrogen activity of aqueous NPs solution including such irradiation products at 5000 Gy (J kg
) was confirmed by the yeast two hybrid assay. These results should expand the application of ionizing radiation to the treatment of NPs.
-nonylphenols in water by Co -ray irradiationKimura, Atsushi; Taguchi, Mitsumasa; Kojima, Takuji; Hiratsuka, Hiroshi*; Namba, Hideki
JAERI-Research 2004-018, 49 Pages, 2005/01
JAERI-Research-2004-018.pdf:6.6MB
no abstracts in English
Yoshida, Yoichi*; Yang, J.*; Saeki, Akinori*; Tagawa, Seiichi*; Shibata, Hiromi*; Namba, Hideki; Kojima, Takuji; Taguchi, Mitsumasa
JAERI-Review 2004-025, TIARA Annual Report 2003, p.143 - 144, 2004/11
no abstracts in English
-estradiol in waterKimura, Atsushi; Taguchi, Mitsumasa; Arai, Hidehiko*; Hiratsuka, Hiroshi*; Namba, Hideki; Kojima, Takuji
Radiation Physics and Chemistry, 69(4), p.295 - 301, 2004/03
Times Cited Count：27 Percentile：83.03(Chemistry, Physical)no abstracts in English
Namba, Hideki
Charged Particle and Photon Interactions with Matter, p.729 - 742, 2003/11
no abstracts in English
Yoshida, Yoichi*; Yang, J.*; Seki, Shuhei*; Saeki, Akinori*; Tagawa, Seiichi*; Shibata, Hiromi*; Taguchi, Mitsumasa; Kojima, Takuji; Namba, Hideki
JAERI-Review 2003-033, TIARA Annual Report 2002, p.145 - 146, 2003/11
no abstracts in English
Koizumi, Hitoshi*; Ichikawa, Tsuneki*; Taguchi, Mitsumasa; Kobayashi, Yasuhiko; Namba, Hideki
Nuclear Instruments and Methods in Physics Research B, 206, p.1124 - 1127, 2003/05
Times Cited Count：8 Percentile：49.94(Instruments & Instrumentation)no abstracts in English
Taguchi, Mitsumasa; Moriyama, Masahiro*; Namba, Hideki; Hiratsuka, Hiroshi*
Radiation Physics and Chemistry, 64(2), p.115 - 122, 2002/05
Times Cited Count：4 Percentile：28.74(Chemistry, Physical)no abstracts in English
Namba, Hideki
Enerugi Rebyu, 22(4), p.8 - 10, 2002/04
no abstracts in English
Namba, Hideki
Hoshasen Riyo Ni Okeru Saikin No Shimpo, p.162 - 172, 2000/06
no abstracts in English
Taguchi, Mitsumasa; Matsumoto, Yuichi*; Moriyama, Masahiro*; Namba, Hideki; Aoki, Yasushi; Hiratsuka, Hiroshi*
Radiation Physics and Chemistry, 58(2), p.123 - 129, 2000/04
Times Cited Count：6 Percentile：42.08(Chemistry, Physical)no abstracts in English
Ono, Shinichi*; Furukawa, Katsutoshi; Taguchi, Mitsumasa; Namba, Hideki; Watanabe, Hiroshi
Radiation Physics and Chemistry, 55(5-6), p.503 - 506, 1999/00
Times Cited Count：7 Percentile：49.31(Chemistry, Physical)no abstracts in English
Taguchi, Mitsumasa; Namba, Hideki; Aoki, Yasushi*; Furukawa, Katsutoshi; Ono, Shinichi*
Radiation Physics and Chemistry, 55(5-6), p.511 - 514, 1999/00
Times Cited Count：4 Percentile：34.52(Chemistry, Physical)no abstracts in English
Taguchi, Mitsumasa; Matsumoto, Yuichi*; Namba, Hideki; Aoki, Yasushi; Hiratsuka, Hiroshi*
Nuclear Instruments and Methods in Physics Research B, 134(3-4), p.427 - 430, 1998/00
Times Cited Count：5 Percentile：73.10(Instruments & Instrumentation)no abstracts in English
