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Journal Articles

Monte Carlo radiation transport modelling of the current-biased kinetic inductance detector

Malins, A.; Machida, Masahiko; Vu, TheDang; Aizawa, Kazuya; Ishida, Takekazu*

Nuclear Instruments and Methods in Physics Research A, 953, p.163130_1 - 163130_7, 2020/02

 Times Cited Count:2 Percentile:16.78(Instruments & Instrumentation)

JAEA Reports

Activity report on the utilization of research reactors; Japanese fiscal year, 2003

Research Reactor Utilization Division

JAERI-Review 2005-034, 450 Pages, 2005/09

JAERI-Review-2005-034.pdf:38.93MB

no abstracts in English

JAEA Reports

Water jet intrusion into hot melt concomitant with direct-contact boiling of water

Shibamoto, Yasuteru

JAERI-Research 2005-016, 127 Pages, 2005/08

JAERI-Research-2005-016.pdf:4.54MB

no abstracts in English

Journal Articles

Nondestructive observation of nuclear fuels and materials by using neutron radiography

Yasuda, Ryo; Matsubayashi, Masahito; Nakata, Masahito; Matsue, Hideaki; Nakanishi, Tomoko

Dai-5-Kai Hoshasen Ni Yoru Hihakai Hyoka Shimpojiumu Koen Rombunshu, p.31 - 34, 2005/02

Neutron radiography is an effectively nondestructive tool for inspection of irradiated nuclear fuels and materials. Neutron CT an neutron imaging plate methods, which are advanced techniques in the neutron radiography, enabled to obtain cross-section images and to evaluate an amount of the element compositions. This paper describes results of those methods using unirradiated fuels and materials and discussed the practicability of those methods to irradiated fuels and materials.

Journal Articles

An Improved fast neutron radiography quantitative measurement method

Matsubayashi, Masahito; Hibiki, Takashi*; Mishima, Kaichiro*; Yoshii, Koji*; Okamoto, Koji*

Nuclear Instruments and Methods in Physics Research A, 533(3), p.481 - 490, 2004/11

 Times Cited Count:3 Percentile:73.45(Instruments & Instrumentation)

The validity of a fast neutron radiography quantification method, the $$Sigma$$-scaling method, which was originally proposed for thermal neutron radiography was examined with Monte Carlo calculations and experiments conducted at the YAYOI fast neutron source reactor. Water and copper were selected as comparative samples for a thermal neutron radiography case and a dense object, respectively. Although different characteristics on effective macroscopic cross-sections were implied by the simulation, the $$Sigma$$-scaled experimental results with the fission neutron spectrum cross-sections were well fitted to the measurements for both the water and copper samples. This indicates that the $$Sigma$$-scaling method could be successfully adopted for quantitative measurements in fast neutron radiography.

JAEA Reports

Activity report on the utilization of research reactors; Japanese fiscal year, 2002

Takahashi, Toshiyuki; Research Reactor Utilization Division

JAERI-Review 2004-016, 542 Pages, 2004/08

JAERI-Review-2004-016.pdf:74.07MB

no abstracts in English

Journal Articles

Development of scintillator for a high-frame-rate neutron radiography

Matsubayashi, Masahito; Katagiri, Masaki

Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.389 - 393, 2004/08

 Times Cited Count:2 Percentile:80.71(Instruments & Instrumentation)

no abstracts in English

Journal Articles

("3D"+"2D+Time") visualization of vapor/water in the reactor observed by neutron beam

Kureta, Masatoshi

VizJournal, (11), 5 Pages, 2004/06

This paper explains the neutron radiography thermal-hydraulic measurement technique, especialy visualization technique, which was developed at Japan Atomic Energry Research Institute. Observation of large and fine-mesh data obtained by the new measurement technology is important from a research point of view. We developed the advanced visualization software which puts into practice effective observation by using new visualization methods, and we made the vizualization of phenomena possible by using VR and/or animation displays etc. by this system. Especially in this paper, the visualization techniques which were used in a prize-winning work of the "Visual Sience Festa 2003" by NIKKEI SCIENCE as easy to read for a general reader as possible by using many figures and movies.

JAEA Reports

Report on the Status and Future Upgrades of the Facilities and Instruments in the JRR-3

Subcommittee for Neutron Beam Utilization; Status and Future Upgrades of the Facilities and Instruments

JAERI-Review 2003-037, 88 Pages, 2004/02

JAERI-Review-2003-037.pdf:6.98MB

The refurbished JRR-3 reached critical in March 1990, and the facilities were opened to the general user program in June 1991. Since then the improved specification and the increase of the beam flux of JRR-3 made it recognized as one of the top four research reactors in the world. Despite the ten fruitful years of achievements in research activities performed at JRR-3, it is indispensable to continuously upgrade and improve research facilities in order to maintain our standard of excellence in the research activities. It is also important that the high intensity proton accelerator project (J-PARC project) is progressing in the same JAERI site. Under these circumstances surrounding the JRR-3 facility, a task force under the neutron beam utilization committee was formed in 2001 and assigned to recommend the necessary upgrade and improvements of reactor facilities as well as neutron scattering instruments in JRR-3. This report summarizes analysis and discussions carried out in the task force during these two years, and describes recommendations from the task force.

Journal Articles

Development of a fast neutron radiography converter using wavelength-shifting fibers

Matsubayashi, Masahito; Hibiki, Takashi*; Mishima, Kaichiro*; Yoshii, Koji*; Okamoto, Koji*

Nuclear Instruments and Methods in Physics Research A, 510(3), p.325 - 333, 2003/09

 Times Cited Count:9 Percentile:43.58

A fluorescent converter for fast neutron radiography (FNR) comprising a scintillator and hydrogen-rich resin has been developed and applied to electronic imaging. The rate of the reaction between fast neutrons and the converter is increased by thickening the converter, but its opaqueness attenuates emitted light photons before they reach its surface. To improve the luminosity of a fluorescent converter for FNR, a novel type of converter was designed in which wavelength-shifting fibers were adopted to transport radiated light to the observation end face. The performance of the converter was compared with that of a polypropylene-based fluorescent converter in an experiment conducted at the fast-neutron-source reactor YAYOI in the University of Tokyo.

JAEA Reports

Activity report on the utilization of research reactors; Japanese fiscal year, 2001

Research Reactor Utilization Division

JAERI-Review 2003-019, 484 Pages, 2003/07

JAERI-Review-2003-019.pdf:29.68MB

no abstracts in English

JAEA Reports

Activity report on the utilization of research reactors; Japanese fiscal year, 2000

Takahashi, Toshiyuki

JAERI-Review 2002-014, 491 Pages, 2002/08

JAERI-Review-2002-014.pdf:30.53MB

no abstracts in English

Journal Articles

Preliminary examination of the applicability of imaging plates to fast neutron radiography

Matsubayashi, Masahito; Hibiki, Takashi*; Mishima, Kaichiro*; Yoshii, Koji*; Okamoto, Koji*

Nuclear Instruments and Methods in Physics Research A, 463(1-2), p.324 - 330, 2001/05

 Times Cited Count:16 Percentile:24.03

no abstracts in English

JAEA Reports

Activity report on the utilization of research reactors; Japanese fiscal year, 1999

Toyoda, Masayuki*

JAERI-Review 2001-004, 494 Pages, 2001/03

JAERI-Review-2001-004.pdf:31.77MB

no abstracts in English

Journal Articles

Present status on the development of a high-frame-rate neutron radiography system in JRR-3M

Matsubayashi, Masahito; Hibiki, Takashi*; Mishima, Kaichiro*

Nondestructive Testing and Evaluation, 16(2-6), p.267 - 275, 2001/01

no abstracts in English

Journal Articles

Design and characteristics of the JRR-3M thermal neutron radiography facility and its imaging systems

Matsubayashi, Masahito; Kobayashi, Hisao*; Hibiki, Takashi*; Mishima, Kaichiro*

Nuclear Technology, 132(2), p.309 - 324, 2000/11

 Times Cited Count:24 Percentile:16.75(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Activity report on the utilization of research reactors; Japanese fiscal year, 1998

Toyoda, Masayuki*; Koyama, Yoshimi

JAERI-Review 2000-004, p.398 - 0, 2000/03

JAERI-Review-2000-004.pdf:19.39MB

no abstracts in English

Journal Articles

Visualization and measurements of liquid phase velocity and void fraction of gas-liquid metal two-phase flow by using neutron radiography

Saito, Yasushi*; Hibiki, Takashi*; Mishima, Kaichiro*; Tobita, Y.*; Suzuki, Toru*; Matsubayashi, Masahito

Proceedings of 9th International Symposium on Flow Visualization, p.391_1 - 391_10, 2000/00

no abstracts in English

JAEA Reports

Fundamental experiments on accumulation behavior of molten fuel in a pressure vessel lower head

Shibamoto, Yasuteru; Nakamura, Hideo; Anoda, Yoshinari; Kukita, Yutaka*

JAERI-Tech 99-042, 41 Pages, 1999/05

JAERI-Tech-99-042.pdf:3.36MB

no abstracts in English

JAEA Reports

72 (Records 1-20 displayed on this page)