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JAEA Reports

Technological study about a disposal measures of low-level radioactive waste including uranium and long-half-life radionuclides

Sugaya, Toshikatsu; Nakatani, Takayoshi; Sasaki, Toshihisa*; Nakamura, Yasuo*; Sakai, Akihiro; Sakamoto, Yoshiaki

JAEA-Technology 2016-036, 126 Pages, 2017/02

JAEA-Technology-2016-036.pdf:7.28MB

At the Radioactive Waste Management and Disposal Project Department Sector of Decommissioning and Radioactive Waste Management, we performed the technological study about the disposal measures of the low-level radioactive waste targeted for uranium-bearing waste and intermediate depth disposal-based waste occurring from the process of the nuclear fuel cycle.

Journal Articles

Research and development activities for accelerator driven system at JAERI

Tsujimoto, Kazufumi; Sasa, Toshinobu; Nishihara, Kenji; Oigawa, Hiroyuki; Takano, Hideki*

Proceedings of International Conference on Physics of Fuel Cycles and Advanced Nuclear Systems; Global Developments (PHYSOR 2004) (CD-ROM), 8 Pages, 2004/04

The Japan Atomic Energy Research Institute (JAERI) is developing an Accelerator Driven System (ADS) for transmutation of nuclear waste such as minor actinide (MA) and long-lived fission product (LLFP). To study and evaluate the feasibility of ADS by physical and engineering viewpoints, the Transmutation Experimental Facility (TEF) is proposed under a framework of J-PARC (Japan Proton Accelerator Research Complex) project. The TEF consists of two facilities named as Transmutation Physics Experimental Facility (TEF-P) and ADS Target Test Facility (TEF-T). The TEF-P consists of a zero-power critical assembly which is operated with a low power proton beam to research the reactor physics and the controllability of ADS. The TEF-T is a facility for material irradiation and partial mockup of beam window which can accept a maximum 600MeV-200kW proton beam into the Pb-Bi eutectic target. The purposes, experimental items and the specifications of the facilities are described.

JAEA Reports

Basic study on ultra high sensitive neutron dosimetry technique based on resonant laser ablation, JAERI's nuclear research promotion program, H12-035 (Contract Research)

Iguchi, Tetsuo*; Watanabe, Kenichi*; Kawarabayashi, Jun*; Uritani, Akira*; Enokida, Yoichi*; Watanabe, Kazuo

JAERI-Tech 2004-010, 62 Pages, 2004/03

JAERI-Tech-2004-010.pdf:2.6MB

no abstracts in English

Journal Articles

Depth profiles of long lived radionuclides in Chernobyl soils sampled around 10 years after the accident

Amano, Hikaru; Onuma, Yoshikazu*

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.217 - 222, 2003/01

 Times Cited Count:6 Percentile:53.93(Chemistry, Analytical)

no abstracts in English

JAEA Reports

None

; *; *

JNC-TN8200 2001-001, 42 Pages, 2001/01

JNC-TN8200-2001-001.pdf:3.16MB

None

JAEA Reports

Influence of naturally-occurring heterogeneous complex-forming materials on the migration behavior of actinides in the geosphere (III)

Tochiyama, Osamu*

JNC-TJ8400 2000-044, 53 Pages, 2000/02

JNC-TJ8400-2000-044.pdf:1.41MB

To estimate the polyelectrolyte effect and the effect of the heterogeneous composition of humic acids, the complex formation constants of Eu(III) and Ca(II) with Aldrich humic acid and polyacrylic acid were obtained, for Eu(10$$^{-8}$$ to 10$$^{-5}$$ M) by solvent extraction with TTA and TBP in xylene, for Ca (10$$^{-10}$$M) with TTA and TOPO in cyclohexane and for Ca(10$$^{-4}$$M) by using ion-selective electrode. By defining the apparent formation as $$beta_{alpha}$$ = [MR$$_{m}$$]/([M][R]), where [R] denotes the concentration of dissociated functional group, [M] and [MR$$_{m}$$] denote the concentration of free and bound metal ion and pcH is defined as-log[H], the values of log$$beta_{alpha}$$ have been obtained at pcH 4.8 - 5.5 in 0.1 - 1.0M NaClO$$_{4}$$ and NaCl. Log$$beta_{alpha}$$ of Eu-humate varied from 5.0 to 9.3 and that of Ca-humate from 2.0 to 3.4..For both humate and polyacrylate, log$$beta_{alpha}$$ increased with pcH or with the degree of dissociation. The increase in the ionic strength O.1 to 1.0 M decreased the log$$beta_{alpha}$$, the decrease in log$$beta_{alpha}$$ of Eu(III)-humate is 1.6, that of Eu(III), polyacrylate 0.7, that of Ca(II)-humate 1.9 and that of Ca(II)-polyacrylate 1.2. While the increase in the metal ion produced no effect on log$$beta_{alpha}$$ of polyacrylate, log$$beta_{alpha}$$ of humate decreased. Depending on the concentration of Eu(III), the coexistence of Ca(II) reduced log $$beta_{alpha}$$ of humate by 0 to 0.8. The dependence of log$$beta_{alpha}$$ of humate on the metal ion concentration suggests the coexistence of strong and weak binding sites in the hmnic acid.

Journal Articles

Transfer of long lived radionuclides in Chernobyl soils to edible plants

Amano, Hikaru; Ueno, Takashi; Arkhipov, N.*; Paskevich, S.*; Onuma, Yoshikazu*

Proceedings of 10th International Congress of the International Radiation Protection Association (IRPA-10) (CD-ROM), 6 Pages, 2000/00

no abstracts in English

Journal Articles

Characteristics of distribution and migration of long-lived radionuclides in the Chernobyl 30km zone

Amano, Hikaru; Matsunaga, Takeshi; Ueno, Takashi; Yanase, Nobuyuki; Nagao, Seiya

Proceedings of the 2nd ISTC/SAC Seminar "Large Scale Area Remediation", p.2_75 - 2_81, 1999/00

no abstracts in English

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-TN1410 97-041, 29 Pages, 1997/11

PNC-TN1410-97-041.pdf:1.35MB

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

Journal Articles

OMEGA program & neutron science project for development of accelerator hybrid system at JAERI

Mukaiyama, Takehiko; Ogawa, Toru; Mizumoto, Motoharu; Takizuka, Takakazu; Hino, Ryutaro; Oyama, Yukio

IAEA-TC-903.3, p.173 - 188, 1997/00

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

Journal Articles

Long-lived nuclides and Nuclear Transmutation

Mukaiyama, Takehiko

Hoshasei Haikibutsu Kenkyu, 2(1-2), p.15 - 26, 1996/02

no abstracts in English

Journal Articles

Development of nuclear transmutation technology for transuranic elements

Mukaiyama, Takehiko

Cho Hangenki Kakushu No Kankyo Dotai To Senryo Hyoka (Hoiken Kankyo Semina Shirizu, No.23), 0, p.142 - 149, 1996/00

no abstracts in English

Journal Articles

5 years research project between RIAP and JAERI on secondary migration of radionuclides in terrestrial and aquatic environment; Some preliminary results

Amano, Hikaru; Matsunaga, Takeshi; Ueno, Takashi; Onuma, Yoshikazu*; Watanabe, Miki*; Yanase, Nobuyuki; Nagao, Seiya; Sukhoruchkin, A. K.*

Proceedings of 5th International Scientific and Technical Conference on the Problems of Liquidation of Chernobyl Accident Consequences, P. 74, 1996/00

no abstracts in English

Journal Articles

Present status of transmutation technology

Mukaiyama, Takehiko

Genshiryoku Shisutemu Nyusu, 6(1), p.5 - 14, 1995/06

no abstracts in English

JAEA Reports

None

PNC-TJ1545 95-001, 150 Pages, 1995/03

PNC-TJ1545-95-001.pdf:5.28MB

no abstracts in English

Journal Articles

Conceptual design study of self-completed fuel cycle system

Osugi, Toshitaka; Takano, Hideki; Ogawa, Toru; ; ; *; *; *; *

Global 1995, Int. Conf. on Evaluation of Emerging Nuclear Fuel Cycle Systems,Vol. 1, 0, p.181 - 189, 1995/00

no abstracts in English

Journal Articles

Research and developments of transmutation of high level radioactive waste

Mukaiyama, Takehiko

Nippon Genshiryoku Gakkai-Shi, 37(3), p.159 - 162, 1995/00

no abstracts in English

29 (Records 1-20 displayed on this page)