Speaker
Description
The neutron capture cross-section of Fe-56 is important for many applications. In nuclear technology Fe is a fundamental structural material. Thus, all its neutron interaction probabilities are important for calculations for reactor design, criticality benchmarks as well as shielding. In stellar nucleosynthesis, it is the seed of the s-process, determining the neutron to seed ratio, strongly affecting the s-process production up to Sr.
In the past decades, measurement of Fe-56(n, gamma) cross-section has been carried out at facilities across the world in various energy ranges. The latest Fe-56 evaluations like INDEN principally rely on data that is several decades old.
We present a new measurement conducted at the Experimental Area 1 (EAR1) of the neutron Time-of-Flight experiment, n_TOF, located at CERN. n_TOF is dedicated to the measurement of neutron reaction cross-sections by the time-of-flight technique. EAR1 with its 185 m flight path, offers a high particle luminosity, low background, and very high resolution in neutron energy.
Combined with the extremely low neutron sensitivity of its custom-made liquid scintillation detection system, the aim of this measurement is to make available to the nuclear data community the most accurate and precise measurement of the said cross-section in the neutron energy range up to the inelastic threshold (~850 keV), with an emphasis on the broad s-wave resonance at 28 keV, which has been specifically challenging to measure in the past.
| Session | Microscopic and Integral Measurements |
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