Informace o publikaci

On similarity of various reactor spectra and 235U prompt fission neutron spectrum

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KOŠŤÁL Michal MATĚJ Zdeněk LOSA Evžen HUML Ondřej ŠTEFÁNIK Milan CVACHOVEC František ŠULC Martin JÁNSKÝ Bohumil NOVÁK Evžen HARUTYUNYAN David RYPAR Vojtěch

Rok publikování 2018
Druh Článek v odborném periodiku
Časopis / Zdroj Applied Radiation and Isotopes
Fakulta / Pracoviště MU

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Citace
www https://www.sciencedirect.com/science/article/pii/S0969804317309132
Doi http://dx.doi.org/10.1016/j.apradiso.2018.01.028
Klíčová slova 235U PFNS; Reactor Dosimetry; IRDFF; Reference neutron spectra
Popis A well-defined neutron spectrum is an essential tool not only for calibration and testing of neutron detectors used in dosimetry and spectroscopy but also for validation and verification of evaluated cross sections. A new evaluation of thermal-neutron induced 235U PFNS was performed by the International Atomic Energy Agency (IAEA) in the CIELO (Collaborative International Evaluated Library Organisation Project) project; new measurements of Spectral Averaged Cross sections averaged in the evaluated spectrum are to be obtained. In general, a neutron spectrum in the core is not identical to the pure fission one because fission neutrons undergo many scattering reactions, but it can be shown that PFNS and reactor spectra become undistinguishable from a certain energy boundary.