1 Introduction
2 Experimental Details
2.1 Sample Preparation
2.2 Experiment Description
3 Results and Discussion
3.1 The Results of the Surface Characterization
Sample (impact angle) | ∆d (μm) |
S
a (μm) |
S
sk (μm) |
S
ku (μm) |
---|---|---|---|---|
RF | – | 0.20 | −2.34 | 65.08 |
30° | 52 | 1.21 | −0.28 | 4.25 |
45° | 31 | 1.33 | −0.51 | 5.00 |
60° | 10 | 1.58 | −0.08 | 4.02 |
90° | 9 | 1.63 | −0.7 | 8.78 |
3.2 VEP Measurements Results
3.3 The Results of the Positron Lifetime Measurements
Sample (impact angle) | Positron lifetime (ps) |
---|---|
RF | 106 (1) |
30° | 133 (1) |
45° | 146 (1) |
60° | 151 (1) |
90° | 152 (1) |