The new photoactivation facility at the 4.3 MV Stuttgart DYNAMITRON: setup, performance, and first applications

At the Stuttgart 4.3 MV DYNAMITRON accelerator a new bremsstrahlung irradia tion facility was installed for photoactivation experiments to complement t he well-established arrangement for systematic photon-scattering studies ta king advantage of the high photon fluxes achievable at this high-current ac celerator. The population or depopulation of isomeric states in low-energy photon-induced reactions (E-gamma = 0.5-4.0 MeV) can be studied with sensit ivities far beyond previous limits. The setup of this facility, its perform ance, and the absolute calibrations are described in detail. First exemplar y results for a test case, the reaction In-115(gamma, gamma')In-115m, are p resented and analyzed in combination with data from tow-energy photon-scatt ering experiments (In-115(gamma, gamma')In-115). The quality of the results demonstrates the powerful capability of this new installation (C) 2001 Els evier Science B.V. All rights reserved.