Search Results - "NISHIHARA, Kenji"

Critical exponent for the Cauchy problem to the weakly coupled damped wave system by Nishihara, Kenji, Wakasugi, Yuta

“…In this paper, we consider a system of weakly coupled semilinear damped wave equations. We determine the critical exponent for any space dimensions. Our proof…”
Get full text

Global existence of solutions for a weakly coupled system of semilinear damped wave equations by Nishihara, Kenji, Wakasugi, Yuta

“…In this paper, we consider the Cauchy problem for a weakly coupled system of semilinear damped wave equations. We prove the global existence of solutions for…”
Get full text

Critical exponent for the semilinear wave equations with a damping increasing in the far field by Nishihara, Kenji, Sobajima, Motohiro, Wakasugi, Yuta

“…We consider the Cauchy problem of the semilinear wave equation with a damping term u tt - Δ u + c ( t , x ) u t = | u | p , ( t , x ) ∈ ( 0 , ∞ ) × R N , u ( 0…”
Get full text

On-line subcriticality measurement using a pulsed spallation neutron source by Iwamoto, Hiroki, Nishihara, Kenji, Yagi, Takahiro, Pyeon, Cheol-Ho

“…To investigate the applicability of the pulsed neutron source method using a pulsed spallation neutron source for an on-line subcriticality monitoring system…”
Get full text

Asymptotic behaviors of solutions for time dependent damped wave equations by Nishihara, Kenji, Zhai, Jian

“…In this paper, we consider the Cauchy problem for the wave equation with time dependent damping b ( t ) u t and absorbed semilinear term | u | ρ − 1 u . Here,…”
Get full text

Role of ADS in the back-end of the fuel cycle strategies and associated design activities: The case of Japan by Oigawa, Hiroyuki, Tsujimoto, Kazufumi, Nishihara, Kenji, Sugawara, Takanori, Kurata, Yuji, Takei, Hayanori, Saito, Shigeru, Sasa, Toshinobu, Obayashi, Hironari

“…Reduction of burden caused by radioactive waste management is one of the most critical issues for the sustainable utilization of nuclear power. The…”
Get full text

JENDL/ImPACT-2018: a new nuclear data library for innovative studies on transmutation of long-lived fission products by Kunieda, Satoshi, Furutachi, Naoya, Minato, Futoshi, Iwamoto, Nobuyuki, Iwamoto, Osamu, Nakayama, Shinsuke, Ebata, Shuichiro, Yoshida, Toru, Nishihara, Kenji, Watanabe, Yukinobu, Niita, Koji

“…A new nuclear data library, JENDL/ImPACT-2018, was developed for an innovative study on the transmutation of long-lived fission products. Nuclear reaction…”
Get full text

NMB4.0: development of integrated nuclear fuel cycle simulator from the front to back-end by Okamura, Tomohiro, Katano, Ryota, Oizumi, Akito, Nishihara, Kenji, Nakase, Masahiko, Asano, Hidekazu, Takeshita, Kenji

“…Nuclear Material Balance code version 4.0 (NMB4.0) has been developed through collaborative R&D between TokyoTech&JAEA. Conventional nuclear fuel cycle…”
Get full text

Impact of PHITS spallation models on the neutronics design of an accelerator-driven system by Iwamoto, Hiroki, Nishihara, Kenji, Iwamoto, Yosuke, Hashimoto, Shintaro, Matsuda, Norihiro, Sato, Tatsuhiko, Harada, Masahide, Maekawa, Fujio

“…The impact of different spallation models and parametrisation of nucleon-nucleus interactions in the particle transport code PHITS on the nuclear…”
Get full text

Neutronics Design for Lead-Bismuth Cooled Accelerator-Driven System for Transmutation of Minor Actinide by TSUJIMOTO, Kazufumi, SASA, Toshinobu, NISHIHARA, Kenji, OIGAWA, Hiroyuki, TAKANO, Hideki

“…Neutronics design study was performed for lead-bismuth cooled accelerator-driven system (ADS) to transmute minor actinides. Early study for ADS indicated two…”
Get full text

Large-Time Behaviors of Solutions to an Inflow Problem in the Half Space for a One-Dimensional System¶of Compressible Viscous Gas by Matsumura, Akitaka, Nishihara, Kenji

Get full text

Irradiation damage to the beam window in the 800MWth accelerator-driven system by Nishihara, Kenji, Kikuchi, Kenji

“…Irradiation damage to the beam window in the concept of 800MWth accelerator-driven system is evaluated. Heat produced in the window is also evaluated…”
Get full text

Characterization and storage of radioactive zeolite waste by Yamagishi, Isao, Nagaishi, Ryuji, Kato, Chiaki, Morita, Keisuke, Terada, Atsuhiko, Kamiji, Yu, Hino, Ryutaro, Sato, Hiroyuki, Nishihara, Kenji, Tsubata, Yasuhiro, Tashiro, Shinsuke, Saito, Ryuichi, Satoh, Tomonori, Nakano, Junichi, Ji, Wenjun, Fukushima, Hisashi, Sato, Seichi, Denton, Mark

“…For the safe storage of zeolite wastes generated by the treatment of radioactive saline water at the Fukushima Daiichi Nuclear Power Station, this study…”
Get full text

Neutronics Design for Lead-Bismuth Cooled Accelerator-Driven System for Transmutation of Minor Actinide by TSUJIMOTO, Kazufumi, SASA, Toshinobu, NISHIHARA, Kenji, OIGAWA, Hiroyuki, TAKANO, Hideki

“…Neutronics design study was performed for lead-bismuth cooled accelerator-driven system (ADS) to transmute minor actinides. Early study for ADS indicated two…”
Get full text

Direct disposal concepts of spent mixed oxide fuel from light water reactors based on heat transfer calculations by Abe, Takumi, Nishihara, Kenji

“…Direct disposal concepts of mixed oxide spent fuel (MOXSF) consumed in light water reactors were investigated via heat transfer calculation. The temperature of…”
Get full text

Transmutation by adiabatic resonance crossing experiment (TARC) benchmarking by Ismailov, Kairat, Nishihara, Kenji, Sasa, Toshinobu, Sugawara, Takanori, Saito, Masaki

“…► TARC experiment benchmarking by MCNPX code. ► JENDL-HE, JENDL-4, JENDL-3.3 and LA-150 libraries validation. ► Neutron fluence, Tc-99 and I-129 transmutation…”
Get full text

Existence and nonexistence of time-global solutions to damped wave equation on half-line by Nishihara, Kenji, Zhao, Huijiang

“…On the half-line R + = ( 0 , ∞ ) the initial-boundary value problems with null-Dirichlet boundary for both the semilinear heat equation and damped wave…”
Get full text

Impact of Partitioning and Transmutation on High-Level Waste Disposal for the Fast Breeder Reactor Fuel Cycle by NISHIHARA, Kenji, OIGAWA, Hiroyuki, NAKAYAMA, Shinichi, ONO, Kiyoshi, SHIOTANI, Hiroki

“…The impact of partitioning and/or transmutation (PT) technology on high-level waste management was investigated for the equilibrium state of several potential…”
Get full text

Conceptual Design Study of Beam Window for Accelerator-Driven System by SUGAWARA, Takanori, NISHIHARA, Kenji, OBAYASHI, Hironari, KURATA, Yuji, OIGAWA, Hiroyuki

“…The conceptual design study of the beam window of the spallation target is one of the critical issues in the R&D of the accelerator-driven system (ADS). In…”
Get full text

Parametric Survey for Benefit of Partitioning and Transmutation Technology in Terms of High-level Radioactive Waste Disposal by OIGAWA, Hiroyuki, YOKOO, Takeshi, NISHIHARA, Kenji, MORITA, Yasuji, IKEDA, Takao, TAKAKI, Naoyuki

“…Benefit of implementing Partitioning and Transmutation (P&T) technology was parametrically surveyed in terms of high-level radioactive waste (HLW) disposal by…”
Get full text