Elsevier

Nuclear Physics A

Volume 296, Issue 1, 13 February 1978, Pages 95-108
Nuclear Physics A

Neutron scattering from 208Pb

https://doi.org/10.1016/0375-9474(78)90414-1Get rights and content

Abstract

Elastic scattering of 7, 9, 11, 20 and 26 MeV neutrons from 208Pb has been measured with the Ohio University Tandem Van de Graaff accelerator. Standard pulsed beam time-of-flight techniques were employed. Measurements of the incident flux at 0° were used to normalize the differential cross sections. The measured cross sections were corrected for dead time, detector efficiency, flux attenuation, multiple scattering, finite geometry, neutron source anisotropy and compound elastic contribution. Relative uncertainties are estimated to be between 5%–10% and the uncertainty in the normalization is estimated to be less than 5 %. The data were used to obtain neutron optical potential parameters. A comparison with proton optical parameters is presented, and the (p, n) quasi-elastic cross section is calculated and compared with available data. Deformation parameters for the 3 state (Q = −2.615 MeV) and 5ā (Q = −3.198 MeV) in 208Pb were obtained at incident energies of 11 and 26 MeV.

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    Supported in part by a grant from the National Science Foundation.

    ††

    Present address: Punjab University, Chandigarh, India.

    †††

    Present address: Lord Corporation, Erie, Pennsylvania 16512.

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