Multiparticle natSr(γ, xnyp) reactions induced with bremsstrahlung end-point energies of 55, 60, and 65 MeV

초록

This study measured the yields of the radionuclides Sr-82, Sr83(m+g), Sr-85m, Sr-85g, Sr-87m, Rb81(g+0.976m),Rb-82m,Rb-83g,Rb84(m+g), and Rb86(m+g) produced in Sr-nat(gamma, xnyp) multiparticle reactions with bremsstrahlung end-point energies of 55, 60, and 65 MeV. The bremsstrahlung radiation was generated using the 100-MeV electron linear accelerator at the Pohang Accelerator Laboratory, Korea, and the reaction yields were derived from the induced activities-measured using off-line gamma-ray spectrometry. To obtain accurate experimental results, we performed the necessary gamma-ray interference corrections. The experimental results were compared with the theoretical predictions obtained usingthe TALYS-1.95 statistical nuclear model code. The calculations were performed using six different level-density models to ascertain which model best fitted the experimental results. The dependence of the reaction yield on the incident bremsstrahlung energy and on the number of nucleons emitted by the photonuclear reactions was also investigated.

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