Fig. 4: Deuterium desorption at room temperature in Workflow 2.

a Graphical representation of Workflow 2 (D electrochemical charging experiment). Comparisons of b m/Z spectra, c 1-D concentration profile of D, d 1-D concentration profile of oxygen, e bulk concentration of D, and f reconstructed ion maps of D+ and O+, for the APT experiments of baseline, D-charged, 30 min and 90 min warm up in buffer chamber conditions.