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Journal Articles

Third international challenge to model the medium- to long-range transport of radioxenon to four Comprehensive Nuclear-Test-Ban Treaty monitoring stations

Maurer, C.*; Galmarini, S.*; Solazzo, E.*; Ku$'s$mierczyk-Michulec, J.*; Bar$'e$, J.*; Kalinowski, M.*; Schoeppner, M.*; Bourgouin, P.*; Crawford, A.*; Stein, A.*; et al.

Journal of Environmental Radioactivity, 255, p.106968_1 - 106968_27, 2022/12

 Times Cited Count:2 Percentile:14.8(Environmental Sciences)

After performing multi-model exercises in 2015 and 2016, a comprehensive Xe-133 atmospheric transport modeling challenge was organized in 2019. For evaluation measured samples for the same time frame were gathered from four International Monitoring System stations located in Europe and North America with overall considerable influence of IRE and/or CNL emissions. As a lesion learnt from the 2nd ATM-Challenge participants were prompted to work with controlled and harmonized model set ups to make runs more comparable, but also to increase diversity. Effects of transport errors, not properly characterized remaining emitters and long IMS sampling times (12 to 24 hours) undoubtedly interfere with the effect of high-quality IRE and CNL stack data. An ensemble based on a few arbitrary submissions is good enough to forecast the Xe-133 background at the stations investigated. The effective ensemble size is below five.

Journal Articles

Study of neutron-nuclear spin correlation term with a polarized Xe target

Sakai, Kenji; Oku, Takayuki; Okudaira, Takuya; Kai, Tetsuya; Harada, Masahide; Hiroi, Kosuke; Hayashida, Hirotoshi*; Kakurai, Kazuhisa*; Shimizu, Hirohiko*; Hirota, Katsuya*; et al.

JPS Conference Proceedings (Internet), 33, p.011116_1 - 011116_6, 2021/03

In neutron fundamental physics, study of correlation term $${bf s}cdot{bf I}$$ of a neutron spin $${bf s}$$ and a target nuclear spin $${bf I}$$ is important because $${bf s}cdot{bf I}$$ term interferes to parity non-conserving (PNC) and time reversal non-conserving terms. For this study, a xenon (Xe) is an interesting nucleus because it has been observed an enhancement of PNC effect around neutron resonance peaks, and polarizes up to $$ sim 10^{-1}$$ by using a spin exchange optical pumping (SEOP) method. We would plan to develop a polarized Xe gas target with a compact in-situ SEOP system, and to study $${bf s}cdot{bf I}$$ term by utilizing epithermal neutron beams supplied from a high intense pulsed spallation neutron source. As the first step, we attempted to measure neutron polarizing ability caused by $${bf s}cdot{bf I}$$ term at a 9.6 eV s-wave resonance peak of $$^{129}$$Xe at BL10 in MLF, by detecting change $$Delta R$$ of ratio between neutron transmissions with the polarized and unpolarized Xe target. After demonstrating that our apparatus could detect small change ($$Delta R_{rm DB} , {approx},10^{-2}$$) of neutron transmissions caused by Doppler broadening effect, a signified value of $$Delta R$$ has been obtained as preliminary results. For analyzing the obtained $$Delta R$$ in detail, we are improving our nuclear magnetic resonance and electron paramagnetic resonance systems for evaluating Xe polarization independently of neutron beams.

Journal Articles

Feasibility study of large-scale production of iodine-125 at the high temperature engineering test reactor

Ho, H. Q.; Honda, Yuki*; Hamamoto, Shimpei; Ishii, Toshiaki; Fujimoto, Nozomu*; Ishitsuka, Etsuo

Applied Radiation and Isotopes, 140, p.209 - 214, 2018/10

 Times Cited Count:3 Percentile:30.05(Chemistry, Inorganic & Nuclear)

Journal Articles

Off-gas processing system operations for mercury target vessel replacement at J-PARC

Kai, Tetsuya; Uchida, Toshitsugu; Kinoshita, Hidetaka; Seki, Masakazu; Oi, Motoki; Wakui, Takashi; Haga, Katsuhiro; Kasugai, Yoshimi; Takada, Hiroshi

Journal of Physics; Conference Series, 1021(1), p.012042_1 - 012042_4, 2018/06

 Times Cited Count:0 Percentile:0.11(Nuclear Science & Technology)

Journal Articles

Role of bremsstrahlung radiation in limiting the energy of runaway electrons in Tokamaks

Bakhtiari, M.; Kramer, G. J.*; Takechi, Manabu; Tamai, Hiroshi; Miura, Yukitoshi; Kusama, Yoshinori; Kamada, Yutaka

Physical Review Letters, 94(21), p.215003_1 - 215003_4, 2005/06

 Times Cited Count:45 Percentile:82.81(Physics, Multidisciplinary)

Bremsstrahlung radiation of runaway electrons is found to be an energy limit for runaway electrons in tokamaks. The minimum and maximum energy of runaway electron beams is shown to be limited by collisions and Bremsstrahlung radiation, respectively. It is also found that a massive injection of a high-Z gas such as Xenon can terminate a disruption-generated runaway current before the runaway electrons hit the walls.

Journal Articles

Effects of core models and neutron energy group structures on xenon oscillation in large graphite-moderated reactors

Yamashita, Kiyonobu; Harada, Hiro; Murata, Isao; Shindo, Ryuichi; *

Journal of Nuclear Science and Technology, 30(3), p.249 - 260, 1993/03

 Times Cited Count:1 Percentile:18.76(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Release of fission products from plate type fuel at elevated temperature

; ; Iwai, Takashi; Saito, Junichi; Nakagawa, Tetsuya; Oyamada, Rokuro; Saito, Minoru

JAERI-M 93-016, 0, p.259 - 267, 1993/02

no abstracts in English

Journal Articles

Trapping of low-energy xenon ions in surfaces of transition metals

Baba, Yuji; Yamamoto, Hiroyuki; Sasaki, Teikichi

Nuclear Instruments and Methods in Physics Research B, 63, p.391 - 394, 1992/00

 Times Cited Count:7 Percentile:60.99(Instruments & Instrumentation)

no abstracts in English

JAEA Reports

Visualization of computed results

*;

JAERI-M 90-100, 49 Pages, 1990/07

JAERI-M-90-100.pdf:1.29MB

no abstracts in English

JAEA Reports

Carburization of UO$$_{2}$$ kernels in Cracked Particles and its Effect on Xenon Release

Tobita, Tsutomu; Ikawa, Katsuichi

JAERI-M 84-096, 16 Pages, 1984/05

JAERI-M-84-096.pdf:0.86MB

no abstracts in English

Journal Articles

Mass-spectrometric study of the negatively-charged krypton and xenon monofluorides

; Abe, Shinichi

Nuclear Instruments and Methods, 212, p.533 - 537, 1983/00

no abstracts in English

Journal Articles

Release behavior of gaseous fission product from coated fuel particles under irradiation

; ; ; Ikawa, Katsuichi; Iwamoto, K.; Yamamoto, Katsumune

Journal of Nuclear Science and Technology, 19(11), p.889 - 902, 1982/00

 Times Cited Count:2 Percentile:32.89(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Photodissociation of radioactive methyl iodide and production of elemental and other iodine species

; ;

Nihon Genshiryoku Gakkai-Shi, 24(5), p.381 - 389, 1982/00

 Times Cited Count:1 Percentile:21.73(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Fission xenon release from lightly irradiated(Th,U)O$$_{2}$$ powders

Shiba, Koreyuki; ; Ugajin, Mitsuhiro

Journal of Nuclear Materials, 96(3), p.255 - 260, 1981/00

 Times Cited Count:6 Percentile:62.78(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Release of fission products from uranium dioxide fuel at NSRR experiments

;

Nihon Genshiryoku Gakkai-Shi, 23(11), p.843 - 850, 1981/00

 Times Cited Count:0 Percentile:0.02(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Fission iodine and xenon release from the UO$$_{2}$$--U$$_{3}$$O$$_{8}$$ system with emphasis on radiation damage

Shiba, Koreyuki

Journal of Nuclear Materials, 57(3), p.271 - 279, 1975/03

no abstracts in English

JAEA Reports

Analysis of Optimal Xenon-Samarium Control Problems by Statistical Search Method

*; Shinohara, Yoshikuni

JAERI-M 5712, 36 Pages, 1974/05

JAERI-M-5712.pdf:1.09MB

no abstracts in English

JAEA Reports

Radiolusis of Carbon Dioxide; Effect of Xenon,Propane,and Propylene Addition

Ikezoe, Yasumasa; ; Shimizu, Saburo; ;

JAERI-M 5498, 10 Pages, 1973/12

JAERI-M-5498.pdf:0.43MB

no abstracts in English

Journal Articles

Three-dimensional dynamic behaviors of a reactor zonal control

;

Measurement and Analysis of Xenon Oscillations, p.761 - 762, 1969/00

no abstracts in English

38 (Records 1-20 displayed on this page)