Information on mass chains and nuclides available on this website:

WWW TUNL

¹⁰n has not been observed in the interaction of 0.7 and 400 GeV protons with uranium: the cross section is < 0.7 x 10^-5 mb (TU77) at 0.7 GeV and < 0.5 mb (TU77B) at 400 GeV.