Extended Data Fig. 2: Excess 176Hf produced by reactions with cosmogenic neutrons.
From: Late fluid flow in a primitive asteroid revealed by Lu–Hf isotopes in Ryugu
Contours of 176Hf/177Hf shifts arising from neutron-induced reactions are plotted as a function of thermal (Φ) and epithermal (Θ) neutron fluences. The contour interval is 0.2ε.
