Abstract
In nuclear reactors, inelastic neutron scattering is a significant energy-loss mechanism which has deep impacts on designments of nuclear reactor and radiation shielding. Iron is an important material in reactor. However, for the existing nuclear data for iron, there exists an obvious divergence for the inelastic scattering cross sections and the related gamma production sections. Therefore the precise measurements are urgently needed for satisfying the demanding to design new nuclear reactors (fast reactors), Accelerator Driven Subcritical System (ADS), and other nuclear apparatus. In this paper, we report a new system with an array of HPGe detectors, electronics and acquisition system. Experiments had been carried out on three neutron facilities.
Highlights
The cross sections of inelastic neutron scattering on 56Fe are important nuclear data for designments of nuclear reactors, Accelerator Driven Sub-critical System (ADS), and other nuclear apparatus
In many experimental measurements, many gamma production cross sections are normalized according to the 847 keV γ ray from 56Fe(2+->0+) transition, which makes the precision of the cross sections very critical.[1]
We studied the prompt gamma-ray method and obtained the gamma-ray production cross-sections from inelastic neutron scattering on 56Fe
Summary
The cross sections of inelastic neutron scattering on 56Fe are important nuclear data for designments of nuclear reactors, Accelerator Driven Sub-critical System (ADS), and other nuclear apparatus. In many experimental measurements, many gamma production cross sections are normalized according to the 847 keV γ ray from 56Fe(2+->0+) transition, which makes the precision of the cross sections very critical.[1] We built experimental setup on three neutron facilities, the CIAE Cockcraft-Walton Accelerator, CIAE 2×1.7 MV accelerator, and Back-n white neutron source at CSNS, and carried out experiment measurements. The shielding and collimator had been established.
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