Overview of JENDL-4.0/HE and benchmark calculations

Kunieda, Satoshi; Iwamoto, Osamu; Iwamoto, Nobuyuki; Minato, Futoshi; Okamoto, Tsutomu; Sato, Tatsuhiko; Nakashima, Hiroshi; Iwamoto, Yosuke; Iwamoto, Hiroki; Kitatani, Fumito; et al.

JAEA-Conf 2016-004, p.41 - 46, 2016/09

https://doi.org/10.11484/jaea-conf-2016-004

Neutron- and proton-induced cross-section data are required in a wide energy range beyond 20 MeV, for the design of accelerator applications. New evaluations are performed with recent knowledge in the optical and pre-equilibrium model calculations. We also evaluated cross-sections for p+Li and p+Be which have been highly requested from a medical field. The present high-energy nuclear data library, JENDL-4.0/HE, includes evaluated cross-sections for incident neutrons and protons up to 200 MeV (for about 130 nuclei). We overview substantial features of the library, i.e., (1) systematic evaluation with CCONE code, (2) challenges for evaluations of light nuclei and (3) inheritance of JENDL-4.0 and JENDL/HE-2007. In this talk, we also focus on the results of benchmark calculation for neutronics to show performance of the present library.

Validation of JENDL high-energy file through analyses of spallation experiments at incident proton energies from 0.5 to 2.83 GeV

Takada, Hiroshi; Kosako, Kazuaki*; Fukahori, Tokio

Journal of Nuclear Science and Technology, 46(6), p.589 - 598, 2009/06

https://doi.org/10.3327/jnst.46.589

The most updated high energy nuclear data file, JENDL/HE-2007, was validated with focus on heavy elements of W, Pb and Hg through analyses of spallation experiments using thick targets at incident proton energies from 0.5 to 2.83 GeV. For this purpose, the processing of the PHITS code system was adjusted to simulate nucleon transport phenomena using only a cross-section library up to 3 GeV with an aid of an intranuclear cascade evaporation model for treating pion-induced reactions. The data in JENDL/HE-2007 predicted well the neutron spectra produced in thick targets with energies lower than 15 MeV while underestimated those from 20 to 100 MeV by a factor of 0.4 to 0.5. It is also confirmed that the cross-section data of the Nb(n,4n)Nb and Co(n,4n)Co reaction for high energy neutron field are reasonable. The present accuracy of JENDL/HE-2007 is almost as same as for the traditional method using intranuclear cascade model of Bertini.

Recent advances in the JENDL project

Shibata, Keiichi; Nakagawa, Tsuneo; Fukahori, Tokio; Iwamoto, Osamu; Ichihara, Akira; Iwamoto, Nobuyuki; Kunieda, Satoshi; Otsuka, Naohiko; Katakura, Junichi; Watanabe, Yukinobu*; et al.

Proceedings of International Conference on Nuclear Data for Science and Technology (ND 2007), Vol.2, p.727 - 732, 2008/05

General- and special-purpose JENDL data files are being produced in cooperation with the Japanese Nuclear Data Committee. We have developed nuclear model codes to improve the quality of MA and FP data. In the FP region, we obtained global coupled-channel optical model parameters, which can be applied to neutron- and proton-induced reaction data up to 200 MeV. These parameters are used for statistical model calculation. Resolved resonance parameters of MA and FP nuclei were updated to improve the low-energy behavior of the cross sections by using recent measurements. As a follow-up of JENDL-3.3, which was released in 2002, covarainces of several nuclei were estimated for a study on ADS. Concerning special-purpose files, the compilation of the 2007 versions of JENDL High Energy File and Photonulcear Data Files is in the final stage.

JENDL photonuclear data file

Kishida, Norio*; Murata, Toru*; Asami, Tetsuo*; Kosako, Kazuaki*; Maki, Koichi*; Harada, Hideo*; Lee, Y.*; Chang, J.*; Chiba, Satoshi; Fukahori, Tokio

AIP Conference Proceedings 769, p.199 - 202, 2005/05

https://doi.org/10.1063/1.1944989

Nuclear data for photonuclear reactions are required in the field of shielding design of high-energy electron accelerators and high-energy -ray therapy. The JENDL Photonuclear Data File was prepared by a working group on nuclear data evaluations for photonuclear reactions in Japanese Nuclear Data Committee. From a survey of many literatures, it is difficult to construct the photonuclear data file by using only measured data, since there are not sufficient experimental data. We were therefore evaluating with theoretical calculations based on statistical nuclear reaction models. The photonuclear cross sections that are to be contained in the file are as follows: photoabsorption cross sections, yield cross sections and DDX for neutrons, protons, deuterons, tritons, He-particles and alpha-particles, and isotope production cross sections. For the actinide nuclides, photofission cross sections are also included. The maximum energy of incident photons is 140 MeV and stored are the photonuclear data for 68 nuclides from H to Np.

The Libraries FSXLIB and MATXSLIB based on JENDL-3.3

Kosako, Kazuaki*; Yamano, Naoki*; Fukahori, Tokio; Shibata, Keiichi; Hasegawa, Akira

JAERI-Data/Code 2003-011, 38 Pages, 2003/07

JAERI-Data-Code-2003-011.pdf:1.29MB

The third revision of JENDL-3 (JENDL-3.3) was released in May 2002. The library is useful for many applications. For users' convenience, we have produced two JENDL-3.3 based libraries FSXLIB-J33 and MATXSLIB-J33 for transport calculation codes such as MCNP and ANISN. These two libraries are available on request.

JENDL Fusion File 99

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

https://doi.org/10.3327/jnst.39.187

no abstracts in English

Japanese evaluated nuclear data library, version 3 revision-2; JENDL-3.2

Nakagawa, Tsuneo; Shibata, Keiichi; Chiba, Satoshi; Fukahori, Tokio; Nakajima, Yutaka; ; Kawano, Toshihiko*; Kanda, Yukinori*; Osawa, Takaaki*; Matsunobu, Hiroyuki*; et al.

Journal of Nuclear Science and Technology, 32(12), p.1259 - 1271, 1995/12

https://doi.org/10.3327/jnst.32.1259

no abstracts in English

A Study of applicability of JENDL/HE-2007 to spallation integral experiment analyses

Takada, Hiroshi; Fukahori, Tokio; Kosako, Kazuaki*

no journal, , 

Applicability of high energy nuclear data file JENDL/HE-2007 was studied through analyses of spallation integral experiments for the first time. Analyses were carried out with the MCNP code incorporated in the particle and heavy ion transport code PHITS using a cross section library taking account of pion production. The pion-induced nuclear reactions were treated by the intranuclear cascade model of Bertini and the evaporation model GEM in PHITS. Reaction rate distributions such as Bi(n,xn), Co(n,xn) reactions were calculated for 1.6 GeV proton incidence on 20 cm diameter and 130 cm long mercury target having a semi-spherical shaped top surface. It was confirmed that isotope production cross sections such as the Co(n,4n)Co reaction compiled in JENDL/HE-2007 were possibly underestimated by several tens of percentage and their discontinuity at 250 MeV might influence 1020% on the reaction rate induced in the spallation neutron environment.

Sedimentary facies and radiocarbon ages of the alluvial-fan toes at the eastern foot of the Yoro Mountain

Hori, Kazuaki*; Nakanishi, Toshimichi; Hong, W.*; Nakashima, Rei*

no journal, , 

Event sediments by debris flows were evaluated based on the sedimentary facies and radiocarbon ages of four sediment cores from the eastern foot of the alluvial fan toes at the eastern foot of the Yoro Mountains. In addition, the marine reservoir effect (MRE) in the Holocene was measured by the offset of radiocarbon ages between terrestrial plant fragments and marine shell fragments found in the same stratum in the core sediments. On the results, nine coarse sediment were observed after 4070 cal BP in three cores. The average of MRE, ca 400 years (n = 13) and ca 330 years (n = 12), were identified on two cores.