Spin-dependent level density in interacting boson-fermion-fermion model

Yield curves for the production of^117g In,^117m In,^116m1In,^115m In,^113m In,¹¹¹In,^110h In,^110l In,¹⁰⁹In,^108hIn and^108lIn from enriches¹¹⁸Sn have been measured by the activation method in the energy region 75–800 MeV. The cross sections have been deduced and for¹¹⁷In,¹¹⁰In and¹⁰⁸In isomeric cross section ratios have been determined. The experimental cross sections are compared to calculations with a cascade-evaporation model and to cross sections calculated with a semi-empirical formula. The isomeric ratios are compared to calculations based on the statistical formalism by Huizenga and Vandenbosch together with cascade-evaporation theory. The (γ, p) cross section and isomeric ratio are also compared to calculations based on a direct knock-out formalism.