Fig. 3: Time-lapse analysis of X-ray irradiation-induced KNO3 growth on KBr measured by in situ AFM topography.
From: Direct visualization of radiation-induced transformations at alkali halide–air interfaces

KBr single crystals were equilibrated for 1 h in 0.1% RH Air (a, b) and 60% RH 99% Ar/1% air mix (c, d) prior to irradiation at 18 kGy/h. Growth over time of individual KNO3 crystals shown in (a–d) and ½ the value of (d) for comparison is measured by height (e), contact area (f), and volume (g). It should be noted that in the dry case the AFM tip shape changed over time, creating a multi-tip artifact. After in situ imaging the tip was replaced to capture the artifact free morphology, a-b last frame.