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The improved Cascade-Exciton Model (CEM) code CEM2k+GEM2 and the Los Alamos version of the QuarkGluon String Model code LAQGSM are extended to describe photonuclear reactions. First, we incorporate new evaluations of elementary cross sections based on the latest experimental data into CEM2k+GEM2 and also make several improvements in the description of the de-excitation of nuclei remaining after the cascade stage of reactions induced by arbitrary projectiles. Next, for photonuclear reactions we include a normalization to evaluated experimental absorption cross sections based on the recent systematics by Kossov in CEM2k+GEM2. Then, we extend our high-energy code LAQGSM by adding the photonuclear mode which was ignored in all its previous versions, and add to it the photonuclear part from our improved CEM2k+GEM2. Presently, these codes do not include a calculation for GDR and describe properly photonuclear reactions only at intermediate energies from 30 MeV to 1.5 GeV. In this work we present a short description of the photonuclear mode as incorporated into our codes, show several illustrative results, and point out some unresolved problems.

CEM03 and LAQGSM03: Extension of the CEM2k+GEM2 and LAQGSM Codes to Describe Photo-Nuclear Reactions at Intermediate Energies (30 MeV to 1.5 GeV)