Multi-alpha Boson Gas state in Fusion Evaporation Reaction and Three-body Force
Abstract
The experimental evidence for the α Boson gas state in the 11C+12C→23Mg fusion evaporation reaction is presented. By measuring the α emission spectrum with multiplicity 2 and 3, we provide insight into the existence of a three-body force among α particles. The observed spectrum exhibited distinct tails corresponding to α particles emitted in pairs and triplets consistent well with the model-calculations of AV18-UX and chiral effective field theory of NV2-3-la*, indicating the formation of α clusters with three-body force in the Boson gas state.
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