Phys.Rev. 85, 942 (1952)

K.H.Sun, F.A.Pecjak, A.J.Allen

The Tetraneutron

NUCLEAR REACTIONS ¹⁰³Rh, ²⁰⁹Bi(n, 4n), E ∼ 18 MeV; measured reaction products. ⁴NN; deduced tetraneutron yield upper limit.

doi: 10.1103/physrev.85.942.2