Particle processing timescales, t_lifted,0.2. Left: t_lifted,0.2 compared to the orbital timescales of the 100 µm particles that cross the Z/R = 0.2 layer. The x-axis represents the last crossing time in simulation orbit when the particle last crossed the Z/R = 0.2. The horizontal dashed and solid lines represent the CO ice (gray) and H₂O ice (light blue) photoprocessing timescale at Z/R = 0.2 for the low-luminosity case and the photodesorption timescale at Z/R = 0.2 for the high-luminosity test case. Particles above these photodestruction timescales are subject to ice processing. The other photodestruction timescales at Z/R = 0.2 lie outside the t_lifted,0.2 range shown in this plot. The colorbar represents the total distance traveled by the 100 µm particles, where the mean total distance peaks around 5.4 au. Right: Bar plot showing the distribution of particles processed by thermal or photochemical processes vs. those that remain unprocessed despite crossing the Z/R = 0.2 layer, for both stellar luminosity cases. The sample size comprises 1 mm and 100 µm particles. In the low-luminosity scenario, 16.6 and 17.2% of the crossing particles (all 100 µm particles) undergo CO ice and H₂O processing via photodissociation, respectively. Only 4.3 and 3.8% do not experience photoprocessing despite having crossed the Z/R = 0.2 layer, and are added to the non-processed category, which already includes 79% of the UV-shielded particles. For the high-luminosity case, thermal photodesorption affects all particles across all disk radii and vertical layers, whereas for photodesorption and photodissociation processes it is slightly higher than for the low-luminosity case.