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Journal Articles

Sensitivity of charged particle activation analysis for long-lived radioactive nuclide determination

Oshima, Masumi*; Yamaguchi, Yurie*; Asai, Masato; Tsukada, Kazuaki; Goto, Jun*; Bamba, Shigeru*; Bi, C.*; Morimoto, Takao*

Journal of Nuclear Science and Technology, 56(9-10), p.866 - 872, 2019/09

 Times Cited Count:1 Percentile:58.8(Nuclear Science & Technology)

Sensitivity of charged particle activation analysis with 8 MeV proton beam was studied for determination of 35 long-lived radioactive nuclides. Reaction cross sections for those nuclides were estimated with ALICE-91 code and isomer yield ratios were estimated from those of neighboring isotopes by taking into account their spins and parities. It was found that the proposed charged particle activation analysis should show high sensitivity for the determination of several hardly measurable nuclides with long half-lives such as $$^{135}$$Cs, $$^{244}$$Pu, $$^{129}$$I, $$^{126}$$Sn, $$^{93}$$Mo, $$^{107}$$Pd, $$^{236}$$U, $$^{248}$$Cm, and $$^{237}$$Np.

Journal Articles

Determination of $$^{129}$$I in environmental samples by AMS and NAA using an anion exchange resin disk

Suzuki, Takashi; Bamba, Shigeru*; Kitamura, Toshikatsu; Kabuto, Shoji*; Isogai, Keisuke*; Amano, Hikaru

Nuclear Instruments and Methods in Physics Research B, 259(1), p.370 - 373, 2007/06

 Times Cited Count:12 Percentile:32.07(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Multiple prompt $$gamma$$-ray analysis and construction of its beam line

Oshima, Masumi; Toh, Yosuke; Kimura, Atsushi; Ebihara, Mitsuru*; Oura, Yasuji*; Ito, Yasuo*; Sawahata, Hiroyuki*; Matsuo, Motoyuki*

Journal of Radioanalytical and Nuclear Chemistry, 271(2), p.317 - 321, 2007/02

 Times Cited Count:11 Percentile:34.95(Chemistry, Analytical)

By combining neutron activation analysis with multiple $$gamma$$-ray detection, we have proved better sensitivity and resolution for the trace element analysis than the ordinary single $$gamma$$-ray detection method. We now try to apply the multiple $$gamma$$-ray detection method to the prompt $$gamma$$-ray analysis (PGA). We have established a new cold neutron beam line for PGA in Japan Research Reactor, JRR-3M, at Tokai establishment of Japan Atomic Energy Research Institute(JAERI). It consists of a beam shutter, a beam attenuator, a $$gamma$$-ray detector array, a sample changer, and a beam stopper. We construct a high-efficiency $$gamma$$-ray detector array specially designed for this purpose. Its performance has been evaluated with the Monte Carlo simulation code, GEANT 4.5.0.

Journal Articles

Effect of change of environmental conditions on the elemental composition of airborne dust

Miyamoto, Yutaka; Saito, Yoko; Magara, Masaaki; Sakurai, Satoshi; Usuda, Shigekazu

Journal of Radioanalytical and Nuclear Chemistry, 271(1), p.83 - 88, 2007/01

 Times Cited Count:0 Percentile:100(Chemistry, Analytical)

Airborne dust samples were collected with a high-volume sampler at a fixed point in JAERI-Tokai for three years. Recently at JAERI-Tokai, a number of pine trees to arrest sand shifting was cut down. We analyzed the variation in elemental composition of the dust collected before and after felling the trees. It found, from the two-dimentional plots of ratio of elemental concentration such as Sc/Na-Cl/Na ratios, almost all samples consisted of mixture of sea-salt and soil. There were some differences between the elemental composition of the dust collected before and after felling the trees.

Journal Articles

Determination of trace elements using multi-parameter coincidence spectrometry

Hatsukawa, Yuichi; Toh, Yosuke; Oshima, Masumi; Kimura, Atsushi; Gharaie, M. H. M.

Journal of Radioanalytical and Nuclear Chemistry, 271(1), p.43 - 45, 2007/01

 Times Cited Count:3 Percentile:72.38(Chemistry, Analytical)

$$gamma$$-$$gamma$$ coincidence of multiple $$gamma$$-rays from the radioisotopes produced by neutron capture reactions was measured with a array of 19-Ge detectors with BGO Compton suppressors, GEMINI-II. Using multiparameter spectrometry, high sensitive determination of iridium in geological samples and I-129 in environmental samples were carried out at GEMINI.

Journal Articles

Nondestructive elemental analysis using neutron

Matsue, Hideaki; Tanji, Akira; Miyata, Satoru; Yasuda, Ryo; Matsubayashi, Masahito; Nakanishi, Tomoko

Dai-5-Kai Hoshasen Ni Yoru Hihakai Hyoka Shimpojiumu Koen Rombunshu, p.45 - 48, 2005/02

no abstracts in English

Journal Articles

Activity for promotion of industrial applications of neutrons in Ibaraki prefecture, Study group for nondestructive analysis and imaging

Matsubayashi, Masahito; Yasuda, Ryo; Tanji, Akira; Miyata, Satoru; Matsue, Hideaki; Nakanishi, Tomoko

Dai-5-Kai Hoshasen Ni Yoru Hihakai Hyoka Shimpojiumu Koen Rombunshu, p.35 - 36, 2005/02

no abstracts in English

Journal Articles

Journal Articles

Facilities and instruments of neutron activation analysis in JAERI

Sasajima, Fumio

Hoshaka Bunseki Handobukku, p.108 - 118, 2004/03

no abstracts in English

Journal Articles

${it k}$$$_{0}$$ standardization for neutron activation analysis

Yonezawa, Chushiro; Matsue, Hideaki

Bunseki, 2004(2), p.75 - 82, 2004/02

no abstracts in English

Journal Articles

Quantitative assessment of interfering nuclear reactions of matrix elements in neutron activation analysis

Miyamoto, Yutaka

Hoshaka Bunseki Handobukku, 7 Pages, 2004/00

no abstracts in English

JAEA Reports

Deposition of radionuclides and stable elements in Tokai-mura

Ueno, Takashi; Amano, Hikaru

JAERI-Data/Code 2003-004, 49 Pages, 2003/03

JAERI-Data-Code-2003-004.pdf:4.55MB

This report presents the data of deposition of radionuclides (Sep. 1993-March 2001) and stable elements (Sep.1993-Oct.1995) in Tokai-mura. To evaluate the migration of radionuclides and stable elements migration from the atmosphere to the ground surface, atmospheric deposition samples were collected from 1993 to 2001 with three basins (distance to grand surface were 1.5m, 4m, 10m) set up in the enclosure of JAERI in Tokai-mura, Ibaraki-ken, Japan. Monthly samples were evaporated to dryness to obtain residual samples and measured with a well type Ge detector for 7Be, 40K, 137Cs and 210Pb. According to the analysis of radioactivity, clear seasonal variations with spring peaks of deposition weight (dry) and deposition amounts of all objective radionuclides were found. Correlation analysis of deposition data also showed that these radionuclides can be divided into two groups. A part of dried sample was irradiated to reactor neutrons at JRR-4 for determination of stable element's deposition.

Journal Articles

Non-destructive determination of trace amounts of iodine in biological samples by epithermal neutron activation and Compton suppression $$gamma$$-ray spectrometry

Yonezawa, Chushiro; Matsue, Hideaki; Yukawa, M.*

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.105 - 109, 2003/01

 Times Cited Count:5 Percentile:61.13(Chemistry, Analytical)

no abstracts in English

Journal Articles

Isotopic ratio of $$^{129}$$I/$$^{127}$$I in seaweed measured by neutron activation analysis with $$gamma$$-$$gamma$$ coincidence

Toh, Yosuke; Hatsukawa, Yuichi; Oshima, Masumi; Shinohara, Nobuo; Hayakawa, Takehito; Kushita, Kohei; Ueno, Takashi

Health Physics, 83(1), p.110 - 113, 2002/07

 Times Cited Count:10 Percentile:42.01(Environmental Sciences)

no abstracts in English

Journal Articles

Neutron activation analysis of rock and plant samples using the facilities at KUR

Miyamoto, Yutaka

Hoshaka Bunseki, (14), p.16 - 22, 2002/05

no abstracts in English

Journal Articles

A High-sensitivity and non-destructive trace element analysis based on multiple $$gamma$$-ray detection

Oshima, Masumi; Toh, Yosuke; Hatsukawa, Yuichi; Hayakawa, Takehito; Shinohara, Nobuo

Journal of Nuclear Science and Technology, 39(4), p.292 - 294, 2002/04

 Times Cited Count:16 Percentile:27.47(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Application of multiparameter coincidence spectrometry using a Ge detectors array to neutron activation analysis

Hatsukawa, Yuichi; Oshima, Masumi; Hayakawa, Takehito; Toh, Yosuke; Shinohara, Nobuo

Nuclear Instruments and Methods in Physics Research A, 482(1-2), p.328 - 333, 2002/04

 Times Cited Count:23 Percentile:17.74(Instruments & Instrumentation)

no abstracts in English

JAEA Reports

Proceedings of the Seminar on the Utilization of Neutron Irradiation; March 9th 2000, Tokai

Department of JMTR, Oarai; Department of Research Reactor, Tokai; Department of Hot Laboratories, Tokai

JAERI-Conf 2001-018, 109 Pages, 2002/01

JAERI-Conf-2001-018.pdf:13.67MB

The “Seminar on the Utilization of Neutron Irradiation" was held on March 9th 2000 in Tokai establishment as a part of activities of the “Program Committee for Neutron Irradiation". The topics presented in the seminar included the recent irradiation studies on the materials for the light water reactors, development of fusion reactor materials and materials used under high temperature, application of neutron activation and recent activities in the post irradiation examinations. This report contains the shortpapers and the copies of the OHPs presented at the seminar.

Journal Articles

Comparison method for neutron activation analysis with $$gamma$$-$$gamma$$ matrix

Toh, Yosuke; Oshima, Masumi; Hatsukawa, Yuichi; Hayakawa, Takehito; Shinohara, Nobuo

Journal of Radioanalytical and Nuclear Chemistry, 250(2), p.373 - 376, 2001/11

 Times Cited Count:16 Percentile:24.3

no abstracts in English

103 (Records 1-20 displayed on this page)