Measurement of activation cross-sections for high-energy neutron-induced reactions of Bi and Pb

Abstract

The cross-sections for ²⁰⁹Bi(n, 4n)²⁰⁶Bi, ²⁰⁹Bi(n, 5n)²⁰⁵Bi, ^natPb(n,xn)^204mPb, ^natPb(n,xn)²⁰³Pb, ^natPb(n,xn)^202mPb,^natPb(n,xn)²⁰¹Pb, ^natPb(n,xn)²⁰⁰Pb, ^natPb(n,αxn)²⁰³Hg and ^natPb(n, pxn)²⁰²Tl reactions were determined at the Korean Institute of Radiological and Medical Sciences (KIRAMS), Korea in the neutron energy range of 15.2 to 37.2 MeV. The above cross-sections were obtained by using the activation and off-line γ-ray spectrometric technique. The quasi-monoenergetic neutron used for the above reactions are based on the ⁹Be(p, n) reaction. Simulations of the spectral flux from the Be target were done using the MCNPX program. The cross-sections were estimated with the TALYS 1.6 code using the default parameter. The data from the present work and literature were compared with the data from the EAF-2010 and the TENDL-2013 libraries, and calculated values of TALYS 1.6 code. It shows that appropriate level density model, the γ-ray strength function, and the spin cut-off parameter are needed to obtain a good agreement between experimental data and theoretical values from TALYS 1.6 code.