Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Enzo Tachikawa"'
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 193:171-178
A permanent and stand-alone neutron-induced prompt γ-ray analysis (PGA) system, usable at both cold and thermal neutron beam guides of JRR-3M has been constructed. The characteristics of the system, including neutron beam and γ-ray spectrometer wer
Autor:
Takeo ADACHI, Yoshinori NAKAHARA, Nobuaki KOHNO, Katsubumi GUNJI, Toshio SUZUKI, Tamotsu SONOBE, Mamoru ONUKI, Kaneharu KATO, Enzo TACHIKAWA, Shin INOUE, Masaharu TAKAYASU, Masaaki YOSHIKUNI, Shinichi KOBAYASHI, Zenji TERUYA, Tadao KAWAMOTO, Mitsuru KAWAMURA
Publikováno v:
Journal of Nuclear Science and Technology. 31:1119-1129
Autor:
Enzo Tachikawa, K. E. Laintz
Publikováno v:
Analytical Chemistry. 66:2190-2193
The feasibility of using supercritical carbon dioxide as a substitute extraction solvent in nuclear reprocessing was tested by the extraction of lanthanide ions from acidic solution. Lanthanides were extracted from 6 M HNO 3 -3 M LiNO 3 solutions usi
Publikováno v:
Journal of High Resolution Chromatography. 16:372-375
The separation of the geometric isomers of chromium and rhodium chelates of trifluoroacetylacetone and thenoyltrifluor-oacetone was investigated using packed column supercritical fluid chromatography. Mobile phases consisting of neat and alcohol-modi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 329:207-216
A reactor-neutron-induced prompt γ-ray analyzing system was constructed at JRR-3M. The system can be set at cold and thermal neutron beam guides with a neutron flux at the sample position of 1.1 × 10 8 and 2.4 × 10 7 n cm −2 s −1 , respectivel
Autor:
Nobuyuki M. Masaki, Enzo Tachikawa, Masakatsu Saeki, Yasuyuki Aratono, Yoshiteru Fujitani, Masao Shibata, Tetsuo Miyazaki, Kenji Fueki
Publikováno v:
Bulletin of the Chemical Society of Japan. 65:735-738
Recoil T-atom reactions have been studied in Xe–H2–D2 mixtures at 77 and 4.2 K. When T atom reactions were caused at 77 K by neutron irradiation at an extremely low dose rate of γ-rays, a large isotope effect (kHT/kDT≈7) on the formation of HT
Autor:
Takakuni Hirabayashi, Yasuyuki Aratono, Norio Masaki, Mikio Nakashima, Masakatsu Saeki, Enzo Tachikawa
Publikováno v:
Fusion Technology. 21:806-811
In this paper, the chemical interaction of tritium with various materials is studied. The chemical state of tritium resting in materials depended on their chemical and physical conditions. The state of tritium can be classified into four categories,
Autor:
Enzo Tachikawa, Tsuguyoshi Suzuki, Chushiro Yonezawa, Michio Hoshi, Tetsuro Hongo, Hideki Imai, Michinori Kabuto
Publikováno v:
BUNSEKI KAGAKU. 41:581-587
がん診断前に採血された血清試料について,セレン及び亜鉛濃度と,その後の発がんリスクとの関連を疫学的に明らかにするため,セリウムを内標準とする機器中性子放射化分析法(INAA)によ
Autor:
Nobuyuki M. Masaki, Yoshiteru Fujitani, Enzo Tachikawa, Tetsuo Miyazaki, Kenji Fueki, Masakatsu Saeki, Yasuyuki Aratono
Publikováno v:
The Journal of Physical Chemistry. 95:1651-1654
Reactions of recoil T atoms were studied in solid H 2 -D 2 mixtures at 4.2 K. The fraction of HT in the sum of HT and DT yields, [HT]/([HT]+[DT]), is roughly equal to the mole fraction of H 2 in the H 2 -D 2 mixtures. These yields were compared with
Autor:
Yoshiteru Fujitani, Yasuyuki Aratono, Nobuyuki M. Masaki, Masakatsu Saeki, Enzo Tachikawa, Tetsuo Miyazaki, Kenji Fueki
Publikováno v:
Bulletin of the Chemical Society of Japan. 63:520-524
Recoil T atom reactions were studied in Xe–H2–D2 mixtures at 77 K. The isotope effect on the T-atom reaction with H2 and D2 (k(T+H2→HT+H)/k(T+D2→DT+D)) was measured on the basis of the HT and DT yields. The isotope effect (k(T+H2)/k(T+D2)) is