Fig. 5: Histogram of electrons and anions released from the trap.

The figure shows the histogram (in blue) from final slow linear dump of electrons and anions (about 1/4 e⁻ and 3/4 \({{{{{{\rm{H}}}}}}}^{{{{{{\boldsymbol{-}}}}}}}\)) from a trap between E2–E4 after similar manipulations as in Fig. 4. This data represents the accumulation of 21 runs at a reduced laser energy. The matrix was 80 nm thick. The sublimation heat pulse starts at t = 0 and a single ablation pulse is given at t = 6140 µs and E2 rises to −5 V from 6200 to 6250 µs closing the trap between E2 and E5. The potential well is later compressed between E2–E4 and E4 is brought to -2 V. The inset shows the corresponding energy distribution, with a nearly exponential decay shape, with the counts after the ramp down being incorporated in the first bin (0–25 meV).