Speaker
Description
Measurements of energy dependence of the total reaction cross section with exotic, neutron-
rich nuclei are used to study the phenomena related to the structure of weakly bound neutrons
in neutron halo and neutron skin. A spectrometer „MULTI-2“ for direct measurement of the
total reaction cross section with radioactive beams is presented, together with some results
obtained on the setup. The spectrometer consists of a multi-detector telescope for the beam
projectile identification and a 4π gamma-ray spectrometer for detection of prompt gamma-
rays and neutrons accompanying nuclear reactions. The characteristics of the gamma-ray
spectrometer important for the evaluation of the measurements – registration efficiency as a
function of energy and multiplicity of emitted gamma rays, spectrometer response and a total
energy deposition were evaluated with Monte Carlo method. Results were confirmed by
measurement with 60 Co spectroscopic source.
