全部文献期刊会议图书|学者科研项目
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作者:Yasuto Miyake , Kazuhiro Nakashoji ...
来源:[J].Nuclear Inst. and Methods in Physics Research, B(IF 1.266), 2020, Vol.463, pp.55-63
摘要:Abstract(#br)Current status of MALT (Micro Analysis Laboratory, Tandem accelerator, The University of Tokyo) and recent achievements both in development and application are reported. Multi-nuclide AMS ( 10 Be, 14 C, 26 Al, 36 Cl, 129 I) system is available and shows good per...
作者:Yasuto Miyake , Hiroyuki Matsuzaki ...
来源:[J].Journal of Environmental Radioactivity(IF 2.119), 2018, Vol.184-185, pp.14-21
摘要:Abstract(#br)129 I in natural archives, such as ice cores, can be used as a proxy for human nuclear activities, age marker, and environmental tracer. Currently, there is only one published record of 129 I in ice core (i.e., from Fiescherhorn Glacier, Swiss Alps) and its limi...
作者:Yasuto Miyake , Hiroyuki Matsuzaki ...
来源:[J].Nuclear Inst. and Methods in Physics Research, B(IF 1.266), 2015, Vol.361, pp.627-631
摘要:Abstract(#br)In March 2011, vast amounts of radionuclides were released into the environment due to the Fukushima Daiichi Nuclear Power Plant (F1NPP) accident. However, very little work has been done concerning accident-derived long-lived nuclides such as 129 I ( T 1/2 = 1....
作者:Yasuto Miyake , Maki Honda ...
来源:[J].Nuclear Inst. and Methods in Physics Research, B(IF 1.266), 2015, Vol.361, pp.63-68
摘要:Abstract(#br)MALT (Micro Analysis Laboratory, Tandem accelerator, The University of Tokyo) was designed for a ‘highly sensitive and precise elemental and isotopic microanalysis system’ using an ion-beam generated by a Pelletron™ 5UD tandem accelerator. Currently, a mult...
作者:Yasuto Miyake , Yuji Maejima ...
来源:[J].Journal of Environmental Radioactivity(IF 2.119), 2015, Vol.146, pp.35-43
摘要:Abstract(#br)The 129 I derived from the FDNPP accident were clearly identified near the surface and showed a trend of rapid decrease with depth. The FDNPP 129 I and 137 Cs was 51.6 ± 1.7 mBq cm −2 and 88.2 ± 27.1 kBq cm −2 (average of four cores inventory) respectively....
作者:Yasuto Miyake , Akira Honshio ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2004, Vol.272 (1), pp.377-380
摘要:Abstract(#br)To realize high-performance UV-light-emitting diodes (UV-LEDs), thick, crack-free and high-crystalline-quality AlGaN films with a low threading dislocation density and a device structure without any absorbing layer such as GaN are essential. Crack-free and low-d...
作者:Yasuto Miyake , Motoaki Iwaya ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2004, Vol.272 (1), pp.270-273
摘要:Abstract(#br)We have developed GaN/AlGaN multi-quantum-well (MQW) UV-laser diode (UV-LD) grown on sapphire substrate. The combination of a low-temperature-deposited AlN interlayer technology and lateral seeding epitaxy yielded crack-free and low-dislocation-density AlGaN. The las...

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