Simulation of an Experiment on the Study of Total Nuclear Photoabsorption Cross Sections in the Region of the Pygmy Resonance
PHYSICS OF ATOMIC NUCLEI(2022)
摘要
An experiment to study total nuclear photoabsorption cross sections at the linear electron accelerator LUE-8-5 (INR, RAS) in the photon energy region of 5–10 MeV called the pygmy resonance is simulated. The motivation for the experiment is new experimental data on photoexcitation of spin isomers of medium-heavy nuclei, which indirectly indicate a change in multipolarity of near-threshold photoabsorption of nuclei. The experiment implies direct investigation of the observed effects by measuring total photoabsorption cross sections in the photon beam. The simulation is performed using the GEANT-4 code. The parameters of the facility are optimized, and the choice of the detectors for the measurements is substantiated.
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关键词
photon, electron, multipolarity, pygmy resonance
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