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A. Ya. Faenov,Y. Fukuda,T. A. Pikuz,M. Kando,H. Kotaki,T. Homma,K. Kawase,T. Kameshima,I. Daito,Y. Hayashi,H. Sakaki,P. Bolton,A. Pirozhkov,A. Yogo,M. Tampo,T. Nakamura,M. Mori,K. Ogura,T. Kawachi,H. 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.1
The interaction of short intense laser pulses with clusters enhanced the absorption of the incident laser light compared to solid targets. Due to the increased absorption, these targets are heated significantly, leading to enhanced emission of X-rays and generation of multiply charged ions with kinetic energies from tens of keV to tens of MeV. Possible applications of these targets include an X-ray source for microscopy or lithography and an ion source for table-top accelerators. The recent results obtained in Kansai Photon Science Institute for the short, moderate intensity, ~5 × 1017W/cm2, laser pulses interactions with large clusters, are presented. Applications of a femtosecondlaser-plasma cluster-based source for different types of nanostructure imaging are discussed.
H. Ohgaki,T. Kii,K. Masuda,M. Omer,T. Misawa,C. H. Pyeon,R. Hajima,T. Hayakawa,T. Shizuma,M. Kando,I. Daito,H. Toyokawa 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.51
A nuclear material detection system based on neutron / gamma-ray hybrid system has been proposed for the container inspection at the sea port. The neutron from the inertial electrostatic confinement fusion source will be used for a fast pre-screening process by using both of neutrons and gamma-rays. The nuclear resonance fluorescence gamma-ray induced by quasi-monochromatic gamma-ray beam from the laser Compton Backscattering will be used in isotope identification for the precise post-screening process. The combination of two different probes, neutrons and gamma-rays, can detect nuclear material hidden by any kind of shielding.
New Defect Control for Extremely Long-Lived Widegap-White Light Emitting Diodes
K. Ando,Y. Hashimoto,K. Kanzaki,S. Ohashi,Y. Morita,T. Abe,H. Kasada,M. Adachi 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
A new current pulse-width control for long-lived ZnSe-white LEDs is presented. Using the defect controlling technique together with high quality ZnSe white LED, it is proved that bright ZnSe white LEDs have exhibited long device life-time exceeding 20000 hrs for its in practical use. It is also evidenced that the present current pulse-width control is not limited in the ZnSe system, but very effective for other widegap semiconductor bright and long-live light emitting devices of GaN and ZnO.