Can Four Neutrons Tango?

2016/02/03 by N. A. Orr · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Nuclear physics research studies #Radioactive Decay and Measurement Techniques

paper · pdf · doi:10.1103/physics.9.14

openalex publication_date 2016/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/22

Abstract

A candidate resonant tetraneutron state is found in the missing-mass spectrum obtained in the doublecharge-exchange reaction 4 He 8 He; 8 Be at 186 MeV=u. The energy of the state is 0.83 AE 0.65stat AE 1.25syst MeV above the threshold of four-neutron decay with a significance level of 4.9. Utilizing the large positive Q value of the 8 He; 8 Be reaction, an almost recoilless condition of the four-neutron system was achieved so as to obtain a weakly interacting four-neutron system efficiently.

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