Fast Neutrons Incident on Vanadium

Abstract
Total neutron cross sections and elastic and inelastic neutron-scattering cross sections of vanadium are experimentally studied. Total neutron cross sections are determined with good resolution (≳1 keV) from 0.1 to 1.45 MeV. Differential elastic and inelastic scattering angular distributions are measured at incident-neutron energy intervals of ≲10 keV and with resolutions of ∼20 keV from 0.3 to 1.5 MeV. The inelastic excitation of states at 330±10 and 926±10 keV is observed. The experimental results are interpreted in terms of the optical model and statistical concepts inclusive of resonance-width fluctuations. The observed intermediate structure is discussed in the context of strongly overlapping resonances, distributions in resonance widths and spacing, and an intermediate optical model.

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