Phys.Rev. C1, 1819 (1970)

P.B.Price, R.L.Fleischer, R.T.Woods

Search for Spontaneously Fissioning Elements in Nature

RADIOACTIVITY ¹⁹⁷Au, ^{204,206,207,208}Pb; measured fission tracks. Z=111, Z=114 deduced limit on spontaneous fission T_1/2.

doi: 10.1103/PhysRevC.1.1819