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Journal Articles

Development of the standard evaluated database of nuclear reactions for long lived fission products

Iwamoto, Osamu

ImPACT Fujita Puroguramu Kokai Seika Hokokukai "Kaku Henkan Niyoru Koreberu Hoshasei Haikibutsu No Ohaba Na Teigen, Shigenka" Seika Hokokusho, Shiryoshu, p.102 - 105, 2019/03

Study on the development of the standard evaluated database of nuclear reactions for long lived fission products has been conducted as a part of the ImPACT Fujita Program titled "Reduction and Resource Recycling of High-level Radioactive Wastes through Nuclear Transmutation". The database of the neutron and proton induced reactions on LLFPs and their neighbor nuclei has been developed taking account of the up-to-date theoretical and experimental knowledges. In addition, the update of the calculation methods of deuteron induced reactions has also conducted. Summary of this study will be reported.

Journal Articles

Measurement of activation cross sections of aluminum for protons with energies between 0.4 GeV and 3.0 GeV at J-PARC

Matsuda, Hiroki; Meigo, Shinichiro; Iwamoto, Hiroki

Progress in Nuclear Science and Technology (Internet), 6, p.171 - 174, 2019/01

Activation cross sections of various materials are strongly required for the improvement of the accuracy of nuclear design and the reduction of the construction costs for spallation neutron sources and transmutation systems. Activation cross sections have been measured in several facilities. However, they have low accuracy and precision. Especially, there are merely experimental data with 3 GeV protons which are used for spallation neutron source (MLF) in J-PARC, the experimental data is required for the improvement of the target materials. Thus, we measured cross sections of tungsten, gold, indium, and beryllium with 0.4 GeV to 3.0 GeV protons. Moreover, ones of aluminium that are set with materials were also measured for a variation of this experiment. It was found that more accurate data than current ones would be measured by using precise beam controls and highly accurate beam monitoring. We compared the experimental data, the evaluated data (JENDL-HE/2007), and the calculations with several intra-nuclear cascade models by PHITS code. Although the experimental data agreed with JENDL-HE/2007, the calculations underestimated about 40%. This could come from the evaporation model (GEM) being included in PHITS code. We found that the calculations agreed with the experimental data by upgrading PHITS code. The cross sections for the other materials have been analysed so far.

Journal Articles

Present status and future plan of JENDL

Iwamoto, Osamu

JAEA-Conf 2018-001, p.87 - 91, 2018/12

Status and plan of JENDL will be presented. After the release of JENDL-4.0 in 2010, six special purpose files have been developed. Four of them were already released and two are under preparation for the release. New decay and yield data for fission products were released as JENDL/FPD-2011 and JENDL/FPY-2011 in 2011, respectively. JENDL-4.0/HE released in 2015 includes proton and neutron induced reaction data up to 200 MeV. Comprehensive decay data were released as JENDL/DDF-2015 which contains data for 3,237 nuclides. New photonuclear reaction data JENDL/PD-2016 and an activation file JENDL/AD-2017 are under preparation for release. Regarding general purpose file, two activities are in progress. One is JENL-4.0u which is created for maintenance of JENDL-4.0 and the other is development of next version of JENDL. For the next JENDL, evaluation for light nuclei and structure material are in progress. It is planed that next version of JENDL will be JENDL-5 which contains nuclear data for all nuclei having natural abundance. Addition of covariance data will be one of the main targets.

Journal Articles

Target test facility for ADS and cross-section experiment in J-PARC

Meigo, Shinichiro; Iwamoto, Hiroki; Matsuda, Hiroki; Takei, Hayanori

Journal of Physics; Conference Series, 1021(1), p.012072_1 - 012072_4, 2018/06

 Times Cited Count:0 Percentile:100

no abstracts in English

Journal Articles

Cross section measurement in J-PARC for neutronics of the ADS

Meigo, Shinichiro; Matsuda, Hiroki; Iwamoto, Hiroki

Proceedings of 13th International Topical Meeting on Nuclear Applications of Accelerators (AccApp '17) (Internet), p.396 - 402, 2018/05

no abstracts in English

Journal Articles

Status of the JENDL project

Iwamoto, Osamu; Shibata, Keiichi; Iwamoto, Nobuyuki; Kunieda, Satoshi; Minato, Futoshi; Ichihara, Akira; Nakayama, Shinsuke

EPJ Web of Conferences, 146, p.02005_1 - 02005_6, 2017/09

 Times Cited Count:0 Percentile:100

Journal Articles

Measurement of aluminum activation cross section and gas production cross section for 0.4 and 3-GeV protons

Meigo, Shinichiro; Nishikawa, Masaaki; Iwamoto, Hiroki; Matsuda, Hiroki

EPJ Web of Conferences, 146, p.11039_1 - 11039_4, 2017/09

 Times Cited Count:0 Percentile:100

no abstracts in English

Journal Articles

Activation cross-section file for decommissioning of LWRs

Shibata, Keiichi; Iwamoto, Nobuyuki; Kunieda, Satoshi; Minato, Futoshi; Iwamoto, Osamu

JAEA-Conf 2016-004, p.47 - 52, 2016/09

It is required to estimate radioactive products accurately for the decommissioning of LWRs. We have developed the neutron-induced activation cross-section file for this purpose. The products consist of 227 nuclides with half-lives larger than 30 days and 12 nuclides with very long half-lives. Target nuclei were selected by considering possible paths leading to the required products. The activation cross sections of these targets were taken from JENDL-4.0, JENDL/A-96 and the post JENDL-4.0 evaluations. As a result, we produced the activation cross-section file with 302 nuclides. Comparing with other evaluations, there exists a large difference especially for the capture cross sections leading to meta-stable states. The data will be released in FY2016 after achieving further improvements.

Journal Articles

Measurements of deuteron-induced activation cross sections for IFMIF accelerator structural materials in 22-40 MeV region

Nakao, Makoto*; Hori, Junichi*; Ochiai, Kentaro; Sato, Satoshi; Yamauchi, Michinori*; Ishioka, Noriko; Nishitani, Takeo

JAERI-Review 2004-025, TIARA Annual Report 2003, p.245 - 247, 2004/11

Measurements of deuteron-induced activation cross sections for IFMIF(International Fusion Materials Irradiation Facility) accelerator structural materials(aluminum,copper,tungsten) were performed by using the AVF cyclotron in TIARA. We obtained the activation cross sections for the reactions $$^{27}$$Al(d,x)$$^{27}$$Mg, $$^{24}$$Na, $$^{nat}$$Cu(d,x)$$^{62,63}$$Zn, $$^{61,64}$$Cu, and $$^{nat}$$W(d,x)$$^{187}$$W, $$^{181-184,186}$$Re in 22-40 MeV rigion. The present results were compared with other experimental ones and the data in the ACSELAM library.

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

JAEA Reports

Activation cross section measurement at neutron energy from 13.3 to 14.9MeV using FNS facility

Kasugai, Yoshimi; Ikeda, Yujiro; Uno, Yoshitomo; Yamamoto, Hiroshi*; Kawade, Kiyoshi*

JAERI-Research 2001-025, 74 Pages, 2001/03

JAERI-Research-2001-025.pdf:2.29MB

no abstracts in English

Journal Articles

La,Ce,Pr,Nd,Gd,Dy,Er同位体14MeV中性子による放射化断面積測定

Kasugai, Yoshimi; Uno, Yoshitomo; Ikeda, Yujiro

Proc. of Int. Conf. on Nucl. Data for Science and Technol., 59, p.635 - 637, 1997/00

no abstracts in English

Journal Articles

Measurement and evaluation of nuclear data

Takahashi, Akito*; Shibata, Keiichi; Ikeda, Yujiro

Purazuma, Kaku Yugo Gakkai-Shi, 71(11), p.1113 - 1122, 1995/11

no abstracts in English

Journal Articles

Measurements and analyses of decay radioactivity induced in simulated deuterium-tritium neutron environments for fusion reactor structural materials

Ikeda, Yujiro; A.Kumar*; Konno, Chikara; Kosako, Kazuaki*; Oyama, Yukio; Maekawa, Fujio; Maekawa, Hiroshi; M.Z.Youssef*; M.A.Abdou*

Fusion Technology, 28(1), p.74 - 98, 1995/08

no abstracts in English

Journal Articles

Experiment and analysis of induced radioactivity in large SS-316 stainless steel shielding material bombarded with 14MeV neutrons

Ikeda, Yujiro; Konno, Chikara; Maekawa, Fujio; Uno, Yoshitomo; Oyama, Yukio; Kosako, Kazuaki*; Maekawa, Hiroshi

Fusion Engineering and Design, 28, p.449 - 456, 1995/00

no abstracts in English

Journal Articles

New measurements of activation cross section for the $$^{63}$$Cu(n,2n)$$^{62}$$Cu and $$^{65}$$Cu(n,2n)$$^{64}$$Cu reactions at energy range of 13.3$$sim$$14.9MeV

Ikeda, Yujiro; D.L.Smith*; Uno, Yoshitomo; Kasugai, Yoshimi*; Konno, Chikara; Maekawa, Hiroshi

Proc., Int. Conf. on Nuclear Data for Science and Technology,Vol. 2, 0, p.944 - 946, 1994/00

no abstracts in English

Journal Articles

Activation cross section measurement of reactions producing short-lived nuclei at neutron energy between 13.4MeV and 14.9MeV

Kasugai, Yoshimi*; Yamamoto, Hiroshi*; Kawade, Kiyoshi*; Ikeda, Yujiro; Uno, Yoshitomo; Maekawa, Hiroshi

Proc., Int. Conf. on Nuclear Data for Science and Technology,Vol. 2, 0, p.935 - 937, 1994/00

no abstracts in English

Journal Articles

Absolute measurements of activation cross sections of $$^{27}$$Al(n,p)$$^{27}$$Mg, $$^{27}$$Al(n,$$alpha$$)$$^{24}$$Na, $$^{56}$$Fe(n,p)$$^{56}$$Mn, $$^{90}$$Zr(n,2n)$$^{89m+g}$$Zr and $$^{93}$$Nb(n,2n)$$^{92m}$$Nb at energy range of 13.3$$sim$$14.9MeV

Ikeda, Yujiro; Konno, Chikara; Oyama, Yukio; Kosako, Kazuaki*; *; Maekawa, Hiroshi

Journal of Nuclear Science and Technology, 30(9), p.870 - 880, 1993/09

 Times Cited Count:16 Percentile:17.96(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Activation cross section measurement at neutron energies of 9.5,11.0,12.0 and 13.2 MeV using $$^{1}$$H($$^{11}$$B,n)$$^{11}$$C neutron source at JAERI

Ikeda, Yujiro; Konno, Chikara; Mizumoto, Motoharu; ; Chiba, Satoshi; Yamanouchi, Y.; Sugimoto, Masayoshi

Proc. of the Nuclear Data for Science and Technology, p.294 - 296, 1992/00

no abstracts in English

Journal Articles

Measurements of long-lived activation cross sections by 14MeV neutrons at FNS

Ikeda, Yujiro; A.Kumar*; Konno, Chikara

Proc. of the Nuclear Data for Science and Technology, p.364 - 366, 1992/00

no abstracts in English

26 (Records 1-20 displayed on this page)