Neutron Cross Section Evaluation of Tungsten and Tantalum

Kim, H.I.; Lee, C.W.; Kim, D.H.; Lee, Y.-O.

doi:10.1016/j.nds.2014.04.023

Cited by 5 publications

(2 citation statements)

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“…2 [4] and JENDL4.0 [5]. The Korea Atomic Energy Research Institute (KAERI) has also been evaluating the neutron total, elastic scattering, and inelastic scattering cross sections of tungsten for neutron energy of up to 150 MeV based on nuclear reaction codes and the available measurement data [6].…”

Section: Introductionmentioning

confidence: 99%

Neutron transmission measurement for natural W at nELBE

Tao

Kim

et al. 2017

EPJ Web Conf.

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Abstract. Korea has developed a Helium Cooled Ceramic Reflector Test Blanket Module (Ko HCCR TBM) related to the ITER project. Tungsten is considered as a prime candidate for the plasma facing materials in fusion reactors, and for the structure material of Ko HCCR TBM. KAERI (Korea Atomic Energy Research Institute) has been evaluating neutron cross sections of tungsten isotopes for neutron energy of up to 150 MeV based on nuclear reaction codes and available measurement data. New experimental data were measured at nELBE of HZDR (Helmholtz-Zentrum Dresden-Rossendorf) for a comparison with the evaluated and existing measurement data. The neutron source nELBE adopts a 40 MeV superconducting electron linac and a liquid Pb target for time-of-flight measurements. The nELBE neutron source uses no moderator and provides fast neutrons. An electron bunch length of 5 ps and a compact target provide a good neutron energy resolution with a relatively short flight length compared to other time-of-flight neutron sources. Transmission data of a natural tungsten sample were measured with a flight path length of 852.1 cm and a repetition rate of 101.56 kHz. The neutron total cross section of natural tungsten was obtained for an energy range of 100 keV to 10 MeV.

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Section: Introductionmentioning

confidence: 99%

Neutron transmission measurement for natural W at nELBE

Tao

Kim

et al. 2017

EPJ Web Conf.

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“…Tungsten is proposed to be one of the most promising candidate spallation targets and other structural materials of the CIADS project, as well as an important material in fusion devices. There some integral experiments and evaluations for Tungsten [10][11][12][13][14][15] have been reported for benchmarking evaluated nuclear data related to the design of fusion devices. In this paper, the integral benchmark experiments for Tungsten at Institute of Modern Physics, Chinese Academy of Sciences (IMP, CAS) are presented.…”

Section: Introductionmentioning

confidence: 99%

Measurement of leakage neutron spectra for Tungsten with D-T neutrons and validation of evaluated nuclear data

Zhang

Chen

Nie

et al. 2015

Fusion Engineering and Design

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Integral neutronics experiments have been investigated at Institute of Modern Physics, Chinese Academy of Sciences (IMP, CAS) in order to validate evaluated nuclear data related to the design of Chinese Initiative Accelerator Driven Systems (CIADS). In present paper, the accuracy of evaluated nuclear data for Tungsten has been examined by comparing measured leakage neutron spectra with calculated ones. Leakage neutron spectra from the irradiation of D-T neutrons on Tungsten slab sample were experimentally measured at 60˚ and 120˚ by using a time-of-flight method. Theoretical calculations are carried out by Monte Carlo neutron transport code MCNP-4C with evaluated nuclear data of the ADS-2.0, ENDF/B-VII.0, ENDF/B-VII.1, JENDL-4.0 and CENDL-3.1 libraries. From the comparisons, it is found that the calculations with ADS-2.0 and ENDF/B-VII.1 give good agreements with the experiments in the whole energy regions at 60˚, while a large discrepancy is observed at 120˚ in the elastic scattering peak, caused by a slight difference in the oscillation pattern of the elastic angular distribution at angles larger than 20˚. However, the calculated spectra using data from ENDF/B-VII.0, JENDL-4.0 and CENDL-3.1 libraries showed larger discrepancies with the measured ones, especially around 8.5-13.5 MeV. Further studies are presented for these disagreements.

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