Refine your search:     
Report No.
 - 
Search Results: Records 1-10 displayed on this page of 10
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

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:53.3(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

Evaluation of neutron dose released in the environment by activation of gold

Kushita, Kohei; Atarashi-Andoh, Mariko; Amano, Hikaru*

Bunseki Kagaku, 63(11), p.867 - 871, 2014/11

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

We report here the study of activated gold for the estimation of neutron dose in the environment in the case of JCO criticality accident happened in Tokai, Japan, in 1999. We collected and analyzed 16 gold samples, such as ring, coin or necklace stored at residents houses in the range from 168 to 568 m from the accident place of JCO. They gave activities from 91.9 to 0.322 Bq/g-Au as standardized values at 06:15, Oct. 1, 1999, when the criticality reaction had ceased after 20 hours of continuation. The induced radioactivity of gold samples showed a good correlation as a power function of distance. The induced radioactivity of gold is discussed with reference data to estimate dose equivalent in the environment around JCO. This paper gives an example showing the usefulness of gold in the field of nuclear and radiation studies and applications.

Journal Articles

Carbon-14 analysis in solidified product of non-metallic solid waste by a combination of alkaline fusion and gaseous CO$$_{2}$$ trapping

Ishimori, Kenichiro; Kameo, Yutaka; Matsue, Hideaki; Oki, Yoshiyuki*; Nakashima, Mikio; Takahashi, Kuniaki

Applied Radiation and Isotopes, 69(2), p.506 - 510, 2011/02

 Times Cited Count:3 Percentile:69.1(Chemistry, Inorganic & Nuclear)

In order to establish a simple and rapid analytical method for $$^{14}$$C in solidified products made from non-metallic low-level radioactive solid wastes by melting treatment, a radiochemical analysis in combination with alkaline fusion as a sample decomposition method was examined. A simulated solidified product containing $$^{14}$$C, which was prepared by using nuclear reaction $$^{14}$$N(n, p)$$^{14}$$C with thermal neutron irradiation, was analyzed by the present method to compare with a conventional radiochemical analysis using oxidizing combustion. The reproducible and quantitative recovery of $$^{14}$$C from the simulated solidified product indicates that the present method is superior and more efficient for $$^{14}$$C analysis in solidified products than the conventional method using oxidizing combustion.

JAEA Reports

Preparation of reference material for solidified products made from radioactive miscellaneous wastes by melting treatment; Reference material for solidified product containing $$alpha$$-ray emitting nuclides (Joint research)

Ishimori, Kenichiro; Oki, Keiichi; Takaizumi, Hirohide; Kameo, Yutaka; Oki, Yoshiyuki*; Nakashima, Mikio

JAEA-Technology 2007-065, 20 Pages, 2008/01

JAEA-Technology-2007-065.pdf:1.4MB

In order to prepare a reference material which is used for radiochemical analysis of solidified products made from non-metallic miscellaneous low level radioactive solid wastes by melting in Nuclear Science Research Institute, Japan Atomic Energy Agency, the preparation method of the reference material was investigated. Under the optimum melting conditions obtained in this report, the reference material containing $$^{237}$$Np, $$^{241}$$Am and $$^{244}$$Cm as $$alpha$$-ray emitting nuclides was successfully prepared. From radiochemical analysis of the reference material, the radioactive concentration of respective nuclides was determined to be 0.188$$pm$$0.001 Bq/g for $$^{237}$$Np, 0.368$$pm$$0.004 Bq/g for $$^{241}$$Am, 0.402$$pm$$0.010 Bq/g for $$^{244}$$Cm.

JAEA Reports

None

PNC-TJ1309 98-001, 161 Pages, 1998/02

PNC-TJ1309-98-001.pdf:5.01MB

no abstracts in English

JAEA Reports

None

PNC-TJ1309 97-001, 112 Pages, 1997/03

PNC-TJ1309-97-001.pdf:3.5MB

no abstracts in English

JAEA Reports

None

*

PNC-TJ1309 96-001, 113 Pages, 1996/03

PNC-TJ1309-96-001.pdf:3.42MB

no abstracts in English

JAEA Reports

None

PNC-TJ199 81-17, 23 Pages, 1981/04

PNC-TJ199-81-17.pdf:1.2MB

None

Oral presentation

Study on noble gas behavior for CTBT verification regime; International Noble Gas Measurement at Mutsu city

Kijima, Yuichi; Inoue, Naoko; Yamamoto, Yoichi; Oda, Tetsuzo

no journal, , 

The International Noble Gas Experiment (INGE) is being carried out for global measurements of radioactive noble gas (radioxenons), as part of the international verification regime for the Comprehensive nuclear-Test-Ban Treaty (CTBT). There are many medical institutions and nuclear facilities in and around Japan, which are possible sources of radioxenons, and it is therefore important to understand their behavior of normal background for detection of underground nuclear tests. The joint measurement is conducted by US Pacific Northwest National Laboratory (PNNL) and JAEA. A transportable and high sensitive noble gas monitoring system developed by PNNL was installed at Mutsu city, Aomori, which was selected based on the information obtained by simulations with an atmospheric transport model and the field surveys. The measurement has been started for survey on noble gas behavior in and around Japan. This paper describes the outline and the preliminary results of measurement.

Oral presentation

Development of true coincidence summing correction for cascade $$gamma$$-ray emitters including $$^{134}$$Cs, 1; Collaborative experiment by the committee on preparation of reference materials for radioactivity analysis of JSAC

Yonezawa, Chushiro*; Kakita, Kazutoshi*; Takahashi, Takanori*; Aono, Tatsuo*; Maeda, Satoshi; Abe, Takaaki*; Arakawa, Fumihiro*; Kiho, Nobuharu*; Akiyama, Masakazu*; Muramatsu, Isamu*; et al.

no journal, , 

no abstracts in English

10 (Records 1-10 displayed on this page)
  • 1