Fig. 2
From: Controlling residual hydrogen gas in mass spectra during pulsed laser atom probe tomography
The total residual H concentration, H TOT, (at.%) plotted as a function of laser pulse energy between 40 and 80 pJ. The specimen tip base temperatures are 20 K (red triangles), 50 K (green squares), or 80 K (blue diamonds), and the laser pulse frequencies are 100 kHz (solid symbols), 250 kHz (half-filled symbols), and 500 kHz (open symbols). The ±2σ error bars, which are based on counting statistics, are not visible since they are smaller than the size of the data point markers