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Pb and 
Bi in proton-induced reactions near 100 MeVIwamoto, Hiroki; Meigo, Shinichiro; Satoh, Daiki; Iwamoto, Yosuke; Ishi, Yoshihiro*; Uesugi, Tomonori*; Yashima, Hiroshi*; Nishio, Katsuhisa; Sugihara, Kenta*; 
elik, Y.*; et al.
Nuclear Instruments and Methods in Physics Research B, 544, p.165107_1 - 165107_15, 2023/11
Times Cited Count：0 Percentile：0.02(Instruments & Instrumentation)The lack of double-differential cross-section (DDX) data for neutron production below the incident proton energy of 200 MeV hinders the validation of spallation models in technical applications, such as research and development of accelerator-driven systems (ADSs). The present study aims to obtain experimental DDX data for ADS spallation target materials in this energy region and identify issues related to the spallation models by comparing them with the analytical predictions. The DDXs for the (
) reactions of Pb and Bi in the 100-MeV region were measured over an angular range of 30
to 150 using the time-of-flight method. The measurements were conducted at Kyoto University utilizing the FFAG accelerator. The DDXs obtained were compared with calculation results from Monte Carlo-based spallation models and the evaluated nuclear data library, JENDL-5. Comparison between the measured DDX and analytical values based on the spallation models and evaluated nuclear data library indicated that, in general, the CEM03.03 model demonstrated the closest match to the experimental values. Additionally, the comparison highlighted several issues that need to be addressed in order to improve the reproducibility of the proton-induced neutron-production DDX in the 100 MeV region by these spallation models and evaluated nuclear data library.
Iwamoto, Hiroki; Meigo, Shinichiro
JPS Conference Proceedings (Internet), 33, p.011046_1 - 011046_6, 2021/03
no abstracts in English
Nakayama, Shinsuke
Kaku Deta Nyusu (Internet), (120), p.19 - 25, 2018/06
Toward development of accurate deuteron nuclear data, we have been developing a computational code dedicated for the deuteron-induced reaction, called DEURACS. The author presented the developmental status and the future outlook of DEURACS in the joint session of nuclear data subcommittee and sigma special advisory committee, and contributed the outline of the presentation to Nuclear Data News. From our preceding work, it has become possible to predict the 
reactions on light nuclei and the 
reactions. These reactions are important in relation to evaluation of neutron sources and tritium production, respectively. In the future, we plan to improve theoretical models implemented in DEURACS for accurate prediction of nuclide production cross-section on medium-heavy nuclei.
reactions on 
Li at 25, 40, and 102 MeVSadamatsu, Hiroki*; Nakayama, Shinsuke; Watanabe, Yukinobu*; Iwamoto, Osamu; Ogata, Kazuyuki*
JAEA-Conf 2017-001, p.135 - 140, 2018/01
In recent years, the demand for intense neutron sources has been increasing in various applications such as nuclear transmutation of high-level radioactive waste and medical radioisotopes production. Deuteron accelerator-based neutron sources are promised as one of the candidates. Therefore, we have developed a code system dedicated for the deuteron-induced reactions, called DEURACS. In the present work, we focus on deuteron-induced neutron production from Li target. The calculated double differential cross sections for reactions at incident energies of 25, 40, and 102 MeV are compared with the measured ones, and the applicability of DEURACS is discussed.
Nakayama, Shinsuke; Kono, Hiroshi*; Watanabe, Yukinobu*; Iwamoto, Osamu; Ye, T.*; Ogata, Kazuyuki*
EPJ Web of Conferences, 122, p.04004_1 - 04004_9, 2016/06
Times Cited Count：5 Percentile：88.68(Physics, Nuclear)In recent years, accelerator neutron sources using deuteron-induced reactions on Li, 
Be, 
C, etc., are proposed for applications in various fields. Engineering design of such facilities requires deuteron nuclear data in a broad incident energy range. We have developed a computational code system dedicated for deuteron nuclear data evaluation in combination with some theoretical models. The code system has been applied to analyses of double-differential 
cross sections for C, 
Al, and 
Ni at incident energies up to 100 MeV. On the other hand, there is few experimental double-differential cross sections. Therefore, double-differential thick target neutron yields for light nuclei such as Be and C are calculated and compared with experimental data. The presentation will show the validation result of the present modelling for nucleon emissions from deuteron-induced reactions through comparison with available experimental data.
Kondo, Keitaro; Takagi, Satoshi*; Murata, Isao*; Miyamaru, Hiroyuki*; Takahashi, Akito*; Kubota, Naoyoshi; Ochiai, Kentaro; Nishitani, Takeo
Fusion Engineering and Design, 81(8-14), p.1527 - 1533, 2006/02
Times Cited Count：14 Percentile：68.04(Nuclear Science & Technology)In a fusion reactor development, double-differential charged-particle emission cross sections(DDXc) are necessary to estimate nuclear heating and material damages of candidate materials irradiated with neutrons. Especially in light nuclei such as Be, Li, and C, nuclear reactions are complicated and difficult to estimate energy spectra of emitted particles based only on theoretical calculations Therefore development of a new technique for precise measurements of DDXc is quite important. Recently we successfully developed a new spectrometer for measurement of DDXc using a pencil-beam DT neutron source of FNS in JAERI. In the present study we carried out measurements of DDXc of 
Be, C, 
F, and Al using the spectrometer. The present technique was valid from the result of measurement for the Al(n,x
) reactions. Slight differences appeared between measured data and evaluation or previous experimental values for Be(n,x) reactions at backward scattering angle and in lower energy region.
Chiba, Satoshi; Fukahori, Tokio; Shibata, Keiichi; Yu, B.*; Kosako, Kazuaki*; Yamamuro, Nobuhiro*
Journal of Nuclear Science and Technology, 39(2), p.187 - 194, 2002/02
Times Cited Count：16 Percentile：69.75(Nuclear Science & Technology)no abstracts in English
*
JNC TJ9400 2000-007, 46 Pages, 2000/03
JNC-TJ9400-2000-007.pdf:2.16MB
For fission cross section and prompt fission neutron spectrum, which largely influence core characteristics of a fast reactor, we have performed experimental and analytical studies for developing an advanced technique to measure absolute fission cross section and neutron fission spectrum for actinide nuclides such as Np237. As the results, we could develop an advanced technique, which combines a normalization technique for the well-known differential cross section and a correction method by a Monte-Carlo code for sample effects. This advanced technique accurately provides both absolute fission cross section and prompt fission neutron spectrum individually. By employing this technique, in this study, we have measured for three actinides (
Np, 
Th and 
U), then, have obtained the fission cross sections and fission spectrum parameter data for those nuclides. Furthermore, we have also performed an analytical study to examine sensitivity of fission spectrum parameter to core multiplication factor by using the standard calculation code for a first reactor.
Takada, Hiroshi; Meigo, Shinichiro; Iga, Kiminori*
Journal of Nuclear Science and Technology, 37(3), p.307 - 315, 2000/03
no abstracts in English
Li at 10 to 20 MeVChiba, Satoshi; *; *; *; Matsuyama, Shigeo*; Shibata, Keiichi; Iwamoto, Osamu; A.J.Koning*; G.M.Hale*; M.B.Chadwick*; et al.
Physical Review C, 58(4), p.2205 - 2216, 1998/10
Times Cited Count：16 Percentile：65.79(Physics, Nuclear)no abstracts in English
*
PNC TJ9601 97-001, 51 Pages, 1997/03
In fuel cycles with recycled actinide, core characteristics are largely influenced by minor actinide (MA:Np, Am, Cm). Accurate nuclear data of MA such as fission cross section are required to estimate the effect of MA with high accuracy.In this study fast neutron induced fission cross section of MA is measured using Dynamitron Accelerator in Tohoku University. The experimental method and the samples, which were developed or introduced during the last year, were improved in this fiscal year: (1)Development of a sealed fission chamber, (2)Intensification of Li neutron target, (3)Improvement of time-resolution of Time-of-flight (TOF) electronic circuit, (4)Introduction of Np237 samples with large sample mass and (5)Introduction of a U235 sample with high purity. Using these improved tools and samples, the fission cross section ratio of NP237 relative to U235 was measured between 5 to 100keV, and the fission cross section of Np237 was deduced. On the other hand, samples of Am241 and Am243 were obtained from Japan Atomic Energy Research Institute (JAERI) after investigating fission cross section of two americium isotopes (Am241 and Am243) which are important for core physics calculation of fast reactors.
Takahashi, Akito*; Shibata, Keiichi; Ikeda, Yujiro
Purazuma, Kaku Yugo Gakkai-Shi, 71(11), p.1113 - 1122, 1995/11
no abstracts in English
*; *; *; Shigyo, Nobuhiro*; Maehata, Keisuke*; Meigo, Shinichiro; Takada, Hiroshi; Chiba, Satoshi; Numajiri, M.*; Nakamura, Takashi*; et al.
Journal of Nuclear Science and Technology, 32(9), p.827 - 833, 1995/09
Times Cited Count：30 Percentile：92.13(Nuclear Science & Technology)no abstracts in English
Yoshizawa, Nobuaki*; *; Takada, Hiroshi
Journal of Nuclear Science and Technology, 32(7), p.601 - 607, 1995/07
Times Cited Count：27 Percentile：90.45(Nuclear Science & Technology)no abstracts in English
Takada, Hiroshi; *; Yoshizawa, Nobuaki*; Nakahara, Yasuaki
Journal of Nuclear Science and Technology, 31(1), p.80 - 82, 1994/01
Times Cited Count：1 Percentile：26.96(Nuclear Science & Technology)no abstracts in English
Takada, Hiroshi; Nakahara, Yasuaki; ; *; Yoshizawa, Nobuaki*
Proc. of NEA/NSC Specialists Meeting on Intermediate Energy Nuclear Data:Models and Codes, 0, p.121 - 136, 1994/00
no abstracts in English
*; *; *; Watanabe, Yukinobu*; *; *; *; *; *; *; et al.
JAERI-M 91-009, 56 Pages, 1991/02
no abstracts in English
Takahashi, Akito*; Sasaki, Yasuhiro*; Maekawa, Fujio*; Sugimoto, Hisashi*
JAERI-M 89-214, 58 Pages, 1989/12
no abstracts in English
U and ThBaba, Mamoru*; *; *; *; *
JAERI-M 89-143, 55 Pages, 1989/10
no abstracts in English
Se+p system investigated by (p,p'
) angular correlations and low-lying states in 
Se; *; *
Nuclear Physics A, 288(2), p.251 - 268, 1977/02
Times Cited Count：6no abstracts in English
