Hunting for the Elusive Tetraneutrons with Thermal Fission
The possible emission rate of particle-stable tetraneutron, a four-neutron system whose existence has been long debated within the scientific community, has been investigated by researchers from Tokyo Tech. They looked into tetraneutron emission from thermal fission of 235U by irradiating a sample of 88SrCO3 in a nuclear research reactor and analyzing it via γ-ray spectroscopy.