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Nanjo, Kotaro; Shiotsu, Hiroyuki; Maruyama, Yu; Sugiyama, Tomoyuki; Okamoto, Koji*
Journal of Nuclear Science and Technology, 60(7), p.816 - 823, 2023/07
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)Yoshida, Yoichi*; Yang, J.*; Kondo, Takafumi*; Seki, Shuhei*; Kozawa, Takahiro*; Tagawa, Seiichi*; Shibata, Hiromi*; Taguchi, Mitsumasa; Kojima, Takuji; Namba, Hideki
JAEA-Review 2005-001, TIARA Annual Report 2004, p.183 - 185, 2006/01
A heavy-ion-pulse radiolysis technology was developed using a single-photon-counting system. In the system, the ion beam was injected a thin scintillator before irradiating the sample. The light emitted from the scintillator by the ion irradiation was used as analyzing source to detect the absorption of primary species in water. Measurement of time-dependent absorption of hydrated electrons in water was achieved using the system, which demonstrates the usefulness of this technique.
Mukai, Masayuki; Ueda, Masato; Inada, Daisuke; Yukawa, Kazuhiko; Maeda, Toshikatsu; Iida, Yoshihisa
Proceedings of International Symposium NUCEF 2005, p.219 - 224, 2005/08
For better quantitative understanding of radionuclide migration for safety assessment of geologic disposal, JAERI has been conducting experimental and modeling studies on influences of humic substances, highly alkaline conditions and colloids on sorptive and diffusional behavior of TRU in geologic materials. In the absence of fulvic acid, one of humic substances, diffusion of Am through a tuff sample was not detected. By adding fulvic acid, Am was detected in the downstream cell, which indicates the diffusion through the sample. Highly alkaline conditions arisen from cementitious materials may spread by altering chemical and physical properties of geologic materials. Through-diffusion experiments of alkaline species in granite showed that the effective diffusion coefficient of Ca
and OH
in a cement-equilibrated aqueous solution were found to be higher by almost two orders of magnitude than Na
and OH in a NaOH solution. Radionuclide migration can be enhanced by colloids, and thus a calculation code describing the effect of colloids on radionuclide migration has been required.
and 5
vibrational bands of partially deuterated ammonia speciesAkagi, Hiroshi; Yokoyama, Keiichi; Yokoyama, Atsushi; Wada, Akira
Journal of Molecular Spectroscopy, 231(1), p.37 - 49, 2005/05
Times Cited Count：2 Percentile：11.62(Physics, Atomic, Molecular & Chemical)Absorption spectra of gaseous samples containing NH
D and NHD have been measured in 11580-11880 and 15280-15610 cm
regions, corresponding to the 5 and 5 vibrational bands, respectively. Photoacoustic spectroscopy has been utilized for the measurement. The molecular constants of NHD in the 5 state and NHD in the 5 state have been determined by the analysis of the obtained absorption spectrum. Comparing the constants with those of the vibrational ground states, structural changes caused by the stretching excitations have been elucidated. The HND bond angles are decreased by these excitations. The dependence of the molecular constants on the stretching quantum number has been also derived by simple Birge-Sponer and Dunham analyses.
Luo, G.; Shu, Wataru; Nakamura, Hirofumi; Ohira, Shigeru; Nishi, Masataka
Review of Scientific Instruments, 75(11), p.4374 - 4378, 2004/11
Times Cited Count：43 Percentile：85.35(Instruments & Instrumentation)The ion species ratios in low energy high flux deuterium plasma beams formed in a linear plasma generator were measured by a quadrupole mass spectrometer. And the species control in the plasma generator was evaluated by changing the operational parameters like neutral pressure, arc current, and axial magnetic confinement to the plasma column. The measurements reveal that the lower pressures prefer to form more D ions, and the medium magnetic confinement at the higher pressures results in production of more D, while the stronger confinement and /or larger arc current are helpful to D conversion into D
. Therefore, the ion species can be controlled by adjusting the operational parameters of the plasma generator. With suitable adjustment, we can easily achieve plasma beams highly enriched with a single species of D, D, or D, to a ratio over 80%. It has been found that the axial magnetic configuration played a significant role in the formation of D within the experimental pressure range.
Shao, C.*; Furusawa, Yoshiya*; Kobayashi, Yasuhiko; Funayama, Tomoo; Wada, Seiichi
FASEB Journal, 17(11), p.1422 - 1427, 2003/08
Times Cited Count：115 Percentile：87.55(Biochemistry & Molecular Biology)The possible mechanism of a radiation-induced bystander response was investigated by using a high-LET heavy particle microbeam, which allows selected cells to be individually hit with precise numbered particles. Even when only a single cell within the confluent culture was hit by one particle of Ar40 or Ne20, a 1.4-fold increase of micronuclei (MN) was detected demonstrating a bystander response. When 49 cells in the culture were individually hit by 1 to 4 particles, the production of MN in the irradiated cultures were about 2-fold higher than control levels but independent of the number and LET of the particles. MN induction in the irradiated-culture was partly reduced by treatment with DMSO, a scavenger of reactive oxygen species (ROS), and it was almost fully suppressed by the mixture of DMSO and PMA, an inhibitor of gap junctional intercellular communication (GJIC). Accordingly, both ROS and GJIC contribute to the above-mentioned bystander response and GJIC might play an essential role by mediating the release of soluble biochemical factors from targeted cells.
Kozai, Naofumi; Inada, Koichi*; Kozaki, Tamotsu*; Sato, Seichi*; Ohashi, Hiroshi*; Bamba, Tsunetaka
Journal of Contaminant Hydrology, 47(2-4), p.149 - 158, 2001/02
Times Cited Count：15 Percentile：41.97(Environmental Sciences)no abstracts in English
Sasaki, Yuji
Bunseki Kagaku, 49(3), p.161 - 168, 2000/03
Times Cited Count：1 Percentile：4.58(Chemistry, Analytical)no abstracts in English
Sasaki, Yuji; Watanabe, Kazuo
JAERI-Research 99-005, 21 Pages, 1999/01
JAERI-Research-99-005.pdf:0.67MB
no abstracts in English
Ishigure, Kenkichi*; Saeki, Masakatsu; Soda, Kunihisa; Sugimoto, Jun
JAERI-M 92-012, 522 Pages, 1992/03
no abstracts in English
D.R.Champ*; J.O.Jirovec*; J.L.Young*; Kumata, Masahiro
Transport and Mass Exchange Processes in Sand and Gravel Aquifers; Field and Modelling Studies,Vol. 2, p.725 - 736, 1991/00
no abstracts in English
Watanabe, Kazuhiro; Araki, Masanori; Dairaku, Masayuki; Horiike, Hiroshi; Ohara, Yoshihiro; Okumura, Yoshikazu; Tanaka, Shigeru;
Review of Scientific Instruments, 61(6), p.1694 - 1698, 1990/06
Times Cited Count：9 Percentile：69.84(Instruments & Instrumentation)no abstracts in English
Mo Production Process by Means of 
U(n,f)Mo and Their Change During Waste Treatments.; Motoki, Ryozo;
JAERI-M 86-077, 29 Pages, 1986/05
no abstracts in English
; ; Ohara, Yoshihiro; *; *
Review of Scientific Instruments, 50(5), p.1111 - 1113, 1985/00
no abstracts in English
; ;
Review of Scientific Instruments, 55(1), p.1 - 7, 1984/00
Times Cited Count：49 Percentile：96.32(Instruments & Instrumentation)no abstracts in English
; ; *; ;
JAERI-M 9408, 35 Pages, 1981/03
no abstracts in English
Ikezoe, Yasumasa; ; Shimizu, Saburo; *
Radiation Physics and Chemistry, 17, p.69 - 70, 1981/00
no abstracts in English
O
in oxygen and inert gas atmospheresTachikawa, Enzo; Nakashima, Mikio
Int.J.Appl.Radiat.Isot., 28(4), p.417 - 423, 1977/04
Times Cited Count：6no abstracts in English
solutions*; Saeki, Masakatsu; Tachikawa, Enzo
Journal of Nuclear Science and Technology, 10(12), p.762 - 764, 1973/12
no abstracts in English
Ishigaki, Isao*; ; *
Polymer Letters, 6, p.727 - 732, 1968/00
no abstracts in English
