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Itoi, Tatsuya*; Iwaki, Chikako*; Onuki, Akira*; Kito, Kazuaki*; Nakamura, Hideo; Nishida, Akemi; Nishi, Yoshihisa*
Nihon Genshiryoku Gakkai-Shi ATOMO
, 60(4), p.221 - 225, 2018/04
no abstracts in English
Ishida, Natsuko*; Ota, Yukihiro; Yamamoto, Yoshihisa*
New Journal of Physics (Internet), 11, p.033007_1 - 033007_15, 2009/03
Times Cited Count：1 Percentile：10.99(Physics, Multidisciplinary)We propose a scheme to generate a novel state, a multi-path cat state of light, in which 
photons are propagating in different paths. Starting with indistinguishable single-photon sources and using linear optical circuits, the target state is extracted with high fidelity. If a state preserving quantum non-demolition measurement of photon number can be incorporated into the generation scheme, the fidelity is further improved.
Re by proton bombardment of enriched 
WIimura, Hideki; Horiguchi, Takayoshi*; Ishida, Yoshihisa*; Ito, Mitsuo; Koizumi, Mitsuo; Miyabe, Masabumi; Oba, Masaki
Journal of the Physical Society of Japan, 77(2), p.025004_1 - 025004_2, 2008/02
Times Cited Count：1 Percentile：11.66(Physics, Multidisciplinary)The nucleus Re is of interest from the astrophysical point of view, since production of this nucleus in stars could change an accuracy of nucleo-cosmochronometer. In order to calculate the neutron capture cross section theoretically, it is necessary to know the spin of nucleus. However, the spin of Re has not been established so far. In order to clarify the nuclear structure of this nucleus, we plan laser spectroscopy of Re, and first, we measured the production yield of the (
) reaction. The experiment was carried out by irradiating a W target with a proton beam from the JAEA tandem accelerator. Rhenium was chemically separated from the irradiated sample, and then 
-ray measurements were performed. As a result, we determined the production yield of the W()Re reaction for the first time and suggested the same spin for Re as the known spin of 
=8 for 
Re.
La, 
La and 
La by collinear laser spectroscopyIimura, Hideki; Koizumi, Mitsuo; Miyabe, Masabumi; Oba, Masaki; Shibata, Takemasa; Shinohara, Nobuo; Ishida, Yoshihisa*; Horiguchi, Takayoshi*; Schuessler, H. A.*
Physical Review C, 68(5), p.054328_1 - 054328_7, 2003/11
Times Cited Count：11 Percentile：58.08(Physics, Nuclear)no abstracts in English
Koizumi, Mitsuo; Osa, Akihiko; Oshima, Masumi; Sekine, Toshiaki; Wakui, Takashi*; Jin, W.*; Katsuragawa, H.*; Miyatake, Hiroari*; Ishida, Yoshihisa*
Nuclear Instruments and Methods in Physics Research B, 204(1-4), p.359 - 362, 2003/05
Times Cited Count：7 Percentile：46.83(Instruments & Instrumentation)no abstracts in English
Tokuhiro, Akira; Hishida, Koichi; Oki, Yoshihisa
PNC TN9410 96-275, 59 Pages, 1996/10
Particle Image Velocimetry (PIV) describes a velocity measurement technique for gas and liquid flows whereby, as the name implies, movement of tracer particles in motion with the flow are recorded as images. The particles are framr-to-frame "tracked by one of several correlation techniques from which a 2D vector field can be generated. A 3D vector field is also possible. The measurement method takes advantage of current computer, CCD camera and laser light technologies for its image processing needs. A laser light sheet is typically used to illuminate the tracer particles in the flow field of interest and when implemented accentuates the constrast between the particle and the transparent medium. One can also apply Laser Induced Fluorescence (LIF) in order to further distinguish the tracer particles, the transparent, continuous medium and any light reflecting surfaces in the flow field such as the interface of a gas bubble rising in a liquid. It is also possible to deduce the temperature field from LIF images. In the present work an introduction to PIV is given by way of an example. The selected flow configuration is that of wake-flow behind a bubble and its solid equivalent. By solid equivalent we mean a solid model with approximately the equivalent bubble breadth and volume. This two-component, two-phase flow aptly demonstrates the applicability of PIV to spatio-temporal flows. Use was additionally made of an Infrared Shadow Technique (IST) in order to capture the unlit image (shadow) of the bubble or solid within the flow field. By triggering both the laser and infrared light sources with the CCD camera, the shape of the object as well as the flow field was simultaneously recorded. Besides the 2D vector field, calculations of the vorticity, Reynolds stress and turbulent kinetic energy (
) distributions were made. The results indicate that for counter-current flow (U
sim$0.245 m/s) of water in a square channel (100 mm) with a single air bubble of ...
Kitahara, Yoshihisa*; Ishida, Junichiro; Asano, Tomohiro
PNC TN8440 87-008, 155 Pages, 1987/02
The environmental radiation monitoring around the Tokai Reprocessing Plant has been performed since 1975, based on "Safety Standard for the Tokai Reprocessing Plant, Chapter V - Environmental Monitoring". This annual report presents interpretation of the results of the environmental monitoring and the results of dose estimation to the hypothetical inhabitants due to the annual discharges of the radioactivity from the reprocessing plant during 1986. Notes of this year may be the detection of the radioactivities in various kinds of samples following the accident at Chernobyl nuclear power plant. Appendix presents comprehensive information, such as, monitoring program, monitoring results, meteorological data, annual discharges from the plant and results of dose estimation.
Kondo, Yasuhiro; Otani, Masashi*; Fukao, Yoshinori*; Hasegawa, Kazuo; Hayashizaki, Noriyosu*; Ishida, Katsuhiko*; Iwashita, Yoshihisa*; Kawamura, Naritoshi*; Kitamura, Ryo*; Mibe, Tsutomu*; et al.
no journal, ,
The muon linear accelerator for the muon g-2/EDM experiment in J-PARC is being developed. As the first step of the muon acceleration, the muon acceleration with J-PARC RFQ (Radio-Frequency Quadrupole)-II plans to be demonstrated at H-line of J-PARC MLF. The slow muon will be obtained by the deceleration using the thin metal foil target in the RFQ acceleration test. The intensity of the decelerated muon by the thin metal foil was measured. Based on this result, the beam intensity in the RFQ test at H-line is estimated to be a few /sec. The particle simulation of the RFQ and the following beam diagnostics system is conducted, and it is shown that the emittance measurement at the RFQ exit using the micro-channel plate based beam profile monitor is feasible.
