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Journal Articles

Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex, 2; Neutron scattering instruments

Nakajima, Kenji; Kawakita, Yukinobu; Ito, Shinichi*; Abe, Jun*; Aizawa, Kazuya; Aoki, Hiroyuki; Endo, Hitoshi*; Fujita, Masaki*; Funakoshi, Kenichi*; Gong, W.*; et al.

Quantum Beam Science (Internet), 1(3), p.9_1 - 9_59, 2017/12

The neutron instruments suite, installed at the spallation neutron source of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), is reviewed. MLF has 23 neutron beam ports and 21 instruments are in operation for user programs or are under commissioning. A unique and challenging instrumental suite in MLF has been realized via combination of a high-performance neutron source, optimized for neutron scattering, and unique instruments using cutting-edge technologies. All instruments are/will serve in world-leading investigations in a broad range of fields, from fundamental physics to industrial applications. In this review, overviews, characteristic features, and typical applications of the individual instruments are mentioned.

Journal Articles

Development of a software platform for providing environmental monitoring data for the Fukushima Daiichi nuclear accident

Seki, Akiyuki; Saito, Osamu; Nago, Harutaka*; Suzuki, Kenta; Tomishima, Katsuya; Saito, Kimiaki; Takemiya, Hiroshi

Radiation Protection Dosimetry, 164(1-2), p.97 - 102, 2015/04

 Times Cited Count:4 Percentile:37.35(Environmental Sciences)

We have developed a software platform which supports working steps for providing large amount of diverse monitoring data. It was found that the platform is effective in reducing the time needed to publish the monitoring data. Reducing the cost and workload for publishing the monitoring data is also important, because monitoring should be continued over a few decades in the case of Fukushima accident. Our platform is expected to help to mitigate the problem, too.

Journal Articles

Decrease of charge collection due to displacement damage by $$gamma$$ rays in a 6H-SiC diode

Onoda, Shinobu; Oshima, Takeshi; Hirao, Toshio; Mishima, Kenta; Hishiki, Shigeomi; Iwamoto, Naoya; Kojima, Kazutoshi*; Kawano, Katsuyasu*

IEEE Transactions on Nuclear Science, 54(6), p.1953 - 1960, 2007/12

 Times Cited Count:17 Percentile:75.49(Engineering, Electrical & Electronic)

Journal Articles

Impact of Auger recombination on charge collection of a 6H-SiC diode by heavy ions

Onoda, Shinobu; Oshima, Takeshi; Hirao, Toshio; Mishima, Kenta; Hishiki, Shigeomi; Iwamoto, Naoya; Kawano, Katsuyasu*

IEEE Transactions on Nuclear Science, 54(6), p.2706 - 2713, 2007/12

 Times Cited Count:16 Percentile:73.84(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Heavy-ion induced current through an oxide layer

Takahashi, Yoshihiro*; Oki, Takahiro*; Nagasawa, Takaharu*; Nakajima, Yasuhito*; Kawanabe, Ryu*; Onishi, Kazunori*; Hirao, Toshio; Onoda, Shinobu; Mishima, Kenta; Kawano, Katsuyasu*; et al.

Nuclear Instruments and Methods in Physics Research B, 260(1), p.309 - 313, 2007/07

 Times Cited Count:4 Percentile:36.37(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Transient currents generated by heavy ions with hundreds of MeV

Onoda, Shinobu; Hirao, Toshio; Laird, J. S.*; Mishima, Kenta; Kawano, Katsuyasu*; Ito, Hisayoshi

IEEE Transactions on Nuclear Science, 53(6), p.3731 - 3737, 2006/12

 Times Cited Count:16 Percentile:74.47(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Analysis of transient current in SiC diodes irradiated with MeV ions

Onoda, Shinobu; Oshima, Takeshi; Hirao, Toshio; Hishiki, Shigeomi; Mishima, Kenta; Iwamoto, Naoya; Kamiya, Tomihiro; Kawano, Katsuyasu*

Proceedings of 7th International Workshop on Radiation Effects on Semiconductor Devices for Space Application (RASEDA-7), p.115 - 118, 2006/10

no abstracts in English

Oral presentation

Energy dependence of single event transient current

Onoda, Shinobu; Hirao, Toshio; Mishima, Kenta; Kawano, Katsuyasu*; Ito, Hisayoshi

no journal, , 

no abstracts in English

Oral presentation

Elucidation of the transportation of charge induced in semiconductors by heavy-ion incidence

Mishima, Kenta; Hirao, Toshio; Onoda, Shinobu; Abe, Hiroshi; Ito, Hisayoshi; Kawano, Katsuyasu*

no journal, , 

no abstracts in English

Oral presentation

Influence of auger recombination on charge collection efficiency in 6H-SiC diodes

Onoda, Shinobu; Oshima, Takeshi; Hirao, Toshio; Hishiki, Shigeomi; Iwamoto, Naoya; Mishima, Kenta; Kawano, Katsuyasu*

no journal, , 

no abstracts in English

Oral presentation

TIBIC measurement of 6H-SiC p$$^{+}$$n diodes irradiated with oxygen and nickel ions

Iwamoto, Naoya; Onoda, Shinobu; Hishiki, Shigeomi; Mishima, Kenta; Oshima, Takeshi; Sato, Takahiro; Oikawa, Masakazu*; Kamiya, Tomihiro; Sakamoto, Airi*; Nakano, Itsuo*; et al.

no journal, , 

Transient currents induced in 6H-SiC n$$^{+}$$p by Ni and O ions were evaluated using Transient Ion Beam Induced Current (TIBIC). Charge Collection Efficiency (CCE) was estimated from TIBIC signals. As a results, CCE for 9 MeV-Ni and 9 MeV-O-irradiated 6H-SiC n$$^{+}$$p diodes are 75 and 90 % respectively. From a simulation of ion tracks in which charge distribution and Auger recombination are considered, the origin of the decrease in CCE is explained in terms of the recombination of electron-hole pairs by Auger recombination in high ion beam induced carrier concentration.

Oral presentation

Study on distribution and migration of radioactive substances around the Fukushima Daiichi Nuclear Power Plant, 3; Development of the database for environment monitoring data

Seki, Akiyuki; Saito, Osamu; Nago, Harutaka; Suzuki, Kenta; Tomishima, Katsuya; Saito, Kimiaki; Takemiya, Hiroshi

no journal, , 

no abstracts in English

Oral presentation

Development of a software platform for providing environmental monitoring data for the Fukushima Daiichi nuclear accident

Seki, Akiyuki; Saito, Osamu; Nago, Harutaka*; Suzuki, Kenta; Tomishima, Katsuya; Saito, Kimiaki; Takemiya, Hiroshi

no journal, , 

In nuclear emergencies, it is especially important to carry out environmental monitoring over a wide range and provide the data immediately so as to understand the current distribution of radionuclides and investigate countermeasures. Therefore, it is indispensable for a nuclear emergency response to establish a system that supports rapid provision of these data. We have been developing the software platform by integrating technologies of environmental monitoring, information processing, and network communication, based on the experience of the Fukushima Daiichi Nuclear Accident.

Oral presentation

Development of international software platform for providing environmental monitoring data

Seki, Akiyuki; Saito, Osamu; Suzuki, Kenta; Tomishima, Katsuya; Munakata, Toshihiko; Ajima, Takumi; Saito, Kimiaki; Takemiya, Hiroshi

no journal, , 

no abstracts in English

14 (Records 1-14 displayed on this page)
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