Speaker
Description
Nowadays, there is a huge interest and demand in fast neutron induced cross-section nuclear data for different fields in research and industry, spanning from chemical analysis of various samples to the design and optimization of the evolving technologies in the domain of GEN-IV fast neutron reactor systems and nuclear fusion technologies. Prompt Gamma Analysis based on Inelastic Neutron Scattering (PGAINS) is a promising method for such tasks. The PGAINS method is based on the measurement of isotope-specific prompt gamma-rays emitted from a nucleus left in an excited state after an inelastic interaction with a fast neutron, i.e. a (n,n´γ) reaction. The FaNGaS (Fast Neutron-induced Gamma-ray Spectrometry) instrument, installed at Heinz Maier-Leibnitz Zentrum (MLZ) in 2014, advances this non-destructive analytical technique and makes it available for a broad community of industry and research. Using the intense fission neutron beam delivered by the research reactor FRM II (Forschungs-Neutronenquelle Heinz Maier-Leibnitz) it allows not only to study the partial cross-section data for the (n,n´γ), (n,pγ) and (n,γ) reactions, but also opens new possibilities for the chemical analysis of large and dense samples. Currently, the only one existing data catalogue of such reactions is the “Atlas of Gamma-rays from the Inelastic Scattering of Reactor Fast Neutrons”, published in 1978 by Demidov et al. This data compilation is valuable, however, to the best of our knowledge, it was yet never validated. Therefore, further measurements of pure elements are required. Moreover, modern detection instrumentation and optimized FANGAS instrument configuration allow for an improved analytical sensitivity compared to that of the 1970s. In this work, we introduce the FaNGaS instrument and report on the results of the fast neutron induced partial cross-section data assessment for 25 elements.
| Session | Microscopic and Integral Measurements |
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