SEDL / STP / STP1228-EB / STP15178S

Neutron Cross Sections for the Interpretation of a Spallation Experiment

Bortignon, PF
Politecnico di Milano,

Mariani, F
Politecnico di Milano,

Perini, A
Politecnico di Milano,

Sangiust, V
Politecnico di Milano,

Pages: 7    Published: Jan 1994

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Abstract

An irradiation was carried out in a spallation neutron spectrum at the beam stop of LAMPF (Los Alamos); many activation detectors were used in order to obtain a fluence mapping inside the capsule volume. The cross sections were derived from ENDF B/V Dosimetry File up to 20 MeV and were based on calculations with the code ALICE up to 200 MeV. From 200 to 800 MeV an empirical extrapolation was employed since no data, calculated or measured, were available at the moment. An attempt has been made in this paper to revisit the interpretation of the experiment reconsidering the cross sections in the energy range from 200 to 800 MeV as given by the semiempirical models of Rudstam, Silberger& Tsao and Hufner.