Design Features of a Prompt Gamma Neutron Activation Analysis System at HANARO

The design features are described of a prompt gamma neutron activation analysis system at HANARO, a 30 MW research reactor in the Korea Atomic Energy Research Institute. The beam consists of polychromatic thermal neutrons diffracted by a set of pyrolytic graphite crystals at orders n in the range 1≤n≤6 at a Bragg angle of 45° on a horizontal beam line. A neutron flux of 1.0·108 n·cm−2·s−1 is calculated at the sample position from the …