Search Results - "Toh, Yosuke"

New data processing method for nuclear material measurement using pulsed neutrons by Komeda, Masao, Toh, Yosuke

“…Active neutron methods using pulsed neutrons are used to detect the presence of nuclear materials. In this study, we investigated a new data processing method…”
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Development of a DDA+PGA-combined non-destructive active interrogation system in “Active-N by Furutaka, Kazuyoshi, Ohzu, Akira, Toh, Yosuke

“…An integrated neutron interrogation system has been developed for non-destructive assay of highly-radioactive special nuclear materials, to accumulate…”
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Conceptual study on a novel method for detecting nuclear material using a neutron source by Komeda, Masao, Toh, Yosuke

“…•A new active neutron method using a continuous neutron source is proposed.•The neutron source is moved (rotated) rapidly near the container.•Nuclear material…”
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Compact and transportable system for detecting lead-shielded highly enriched uranium using 252Cf rotation method with a water Cherenkov neutron detector by Tanabe, Kosuke, Komeda, Masao, Toh, Yosuke, Kitamura, Yasunori, Misawa, Tsuyoshi, Tsuchiya, Ken’ichi, Sagara, Hiroshi

“…The global challenge of on-site detection of highly enriched uranium (HEU), a substance with considerable potential for unauthorized use in nuclear security,…”
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Effect of sample density in prompt γ-ray analysis by Maeda, Makoto, Segawa, Mariko, Toh, Yosuke, Endo, Shunsuke, Nakamura, Shoji, Kimura, Atsushi

“…A high-accuracy analytical method is broadly required to obtain reliable research results. Thus, prompt γ-ray analysis (PGA), one of the most accurate…”
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Development of correction method for sample density effect on PGA by Maeda, Makoto, Segawa, Mariko, Toh, Yosuke, Endo, Shunsuke, Nakamura, Shoji, Kimura, Atsushi

“…The accuracy of the prompt γ -ray analysis is known to degrade for the samples containing neutron-scattering materials, such as hydrogen, depending on its…”
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High sensitivity determination of iridium contents in ultra-basic rocks by INAA with coincidence gamma-ray detection by Ebihara, Mitsuru, Shirai, Naoki, Kuwayama, Jin, Toh, Yosuke

“…Very low contents (in the range of 10−9 g/g) of Ir in mantle-derived rock samples (komatiites) were non-destructively determined by INAA coupled with…”
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Analytical method for the determination of 211At using an α-scintillation camera system and thin-layer chromatography by Segawa, Mariko, Nishinaka, Ichiro, Toh, Yosuke, Maeda, Makoto

“…211 At is artificially produced for medical purposes. To prevent severe loss of short-lived 211 At, a rapid method analyzing both the radioactivity and all…”
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Discovery of a new low energy neutron resonance of $$^{89}$$Y by Katabuchi, Tatsuya, Toh, Yosuke, Mizumoto, Motoharu, Saito, Tatsuhiro, Terada, Kazushi, Kimura, Atsushi, Nakamura, Shoji, Minghui, Huang, Rovira, Gerard, Igashira, Masayuki

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Development of a water Cherenkov neutron detector for the active rotation method and demonstration of nuclear material detection by Tanabe, Kosuke, Komeda, Masao, Toh, Yosuke, Kitamura, Yasunori, Misawa, Tsuyoshi, Tsuchiya, Ken'ichi, Akiba, Norimitsu, Kakuda, Hidetoshi, Shibasaki, Kazunari, Sagara, Hiroshi

“…The active rotation method is an innovative, transportable, active neutron method suitable for on-site detection of concealed nuclear material. Its assay…”
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Neutron capture and total cross-section measurements and resonance parameter analysis of niobium-93 below 400 eV by Endo, Shunsuke, Kimura, Atsushi, Nakamura, Shoji, Iwamoto, Osamu, Iwamoto, Nobuyuki, Rovira, Gerard, Terada, Kazushi, Meigo, Shin-ichiro, Toh, Yosuke, Segawa, Mariko, Maeda, Makoto, Tsuneyama, Masayuki

“…Neutron capture yields and transmission ratios of 93 Nb were measured by applying the time-of-flight method using the Accurate Neutron-Nucleus Reaction…”
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Water contents in aggregates and cement pastes determined by gravimetric analysis and prompt γ-ray analysis by Kinoshita, Norikazu, Noto, Takuma, Nakashima, Hitoshi, Kosako, Kazuaki, Kato, Takahiro, Kuroiwa, Yoichi, Kurabe, Misako, Sasaki, Yuki, Torii, Kazuyuki, Maeda, Makoto, Toh, Yosuke, Kimura, Atsushi, Nakamura, Shoji, Endo, Shunsuke, Segawa, Mariko

“…We determined the free + adsorbed water and the bound water in aggregates and cement pastes using conventional gravimetric analysis and prompt γ-ray analysis,…”
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Synergistic Effect of Combining Two Nondestructive Analytical Methods for Multielemental Analysis by Toh, Yosuke, Ebihara, Mitsuru, Kimura, Atsushi, Nakamura, Shoji, Harada, Hideo, Hara, Kaoru Y, Koizumi, Mitsuo, Kitatani, Fumito, Furutaka, Kazuyoshi

“…We developed a new analytical technique that combines prompt gamma-ray analysis (PGA) and time-of-flight elemental analysis (TOF) by using an intense pulsed…”
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Discovery of a new low energy neutron resonance of 89Y by Katabuchi, Tatsuya, Toh, Yosuke, Mizumoto, Motoharu, Saito, Tatsuhiro, Terada, Kazushi, Kimura, Atsushi, Nakamura, Shoji, Minghui, Huang, Rovira, Gerard, Igashira, Masayuki

“…A new neutron resonance of 89 Y was discovered by time-of-flight (TOF) neutron capture experiments using a pulsed neutron beam from a spallation neutron source…”
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Study of the neutron multiplication effect in an active neutron method by Komeda, Masao, Ohzu, Akira, Mori, Takamasa, Nakatsuka, Yoshiaki, Maeda, Makoto, Kureta, Masatoshi, Toh, Yosuke

“…The neutron multiplication effect appears when an item contains large amounts of nuclear material. The neutron multiplication effect in this paper means the…”
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Deep-sea record of impact apparently unrelated to mass extinction in the Late Triassic by Onoue, Tetsuji, Sato, Honami, Nakamura, Tomoki, Noguchi, Takaaki, Hidaka, Yoshihiro, Shirai, Naoki, Ebihara, Mitsuru, Osawa, Takahito, Hatsukawa, Yuichi, Toh, Yosuke, Koizumi, Mitsuo, Harada, Hideo, Orchard, Michael J, Nedachi, Munetomo

“…The 34-million-year (My) interval of the Late Triassic is marked by the formation of several large impact structures on Earth. Late Triassic impact events have…”
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High sensitivity determination of iridium contents in ultra-basic rocks by INAA with coincidence gamma-ray detection by Ebihara, Mitsuru, Shirai, Naoki, Kuwayama, Jin, Toh, Yosuke

“…Very low contents (in the range of 10-9 g/g) of Ir in mantle-derived rock samples (komatiites) were non-destructively determined by INAA coupled with…”
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Pulse-width analysis for neutron capture cross-section measurement using an NaI(Tl) detector by Katabuchi, Tatsuya, Matsuhashi, Taihei, Terada, Kazushi, Arai, Takuro, Furutaka, Kazuyoshi, Hara, Kaoru Y., Harada, Hideo, Hirose, Kentaro, Hori, Jun-ichi, Igashira, Masayuki, Kamiyama, Takashi, Kimura, Atsushi, Kino, Koichi, Kitatani, Fumito, Kiyanagi, Yoshiaki, Koizumi, Mitsuo, Mizumoto, Motoharu, Nakamura, Shoji, Oshima, Masumi, Toh, Yosuke

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The Earth–Moon system during the late heavy bombardment period – Geochemical support for impacts dominated by comets by Gråe Jørgensen, Uffe, Appel, Peter W.U., Hatsukawa, Yuichi, Frei, Robert, Oshima, Masumi, Toh, Yosuke, Kimura, Atsushi

“…The solid planets assembled 4.57 Gyr ago during a period of less than 100 Myr, but the bulk of the impact craters we see on the inner planets formed much…”
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Study for s-process using neutron beam provided from ANNRI of J-PARC by Hayakawa, Takehioto, Toh, Yosuke, Kimura, Akira, Nakamura, Shoji, Shizuma, Toshiyuki, Harada, Hideo

“…Most isotopes heavier than iron are synthesized by the slow neutron capture reaction process (s-process) in stars. Isomers in stable isotopes have sometimes an…”
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