Electron Beam Penetration Depth Calculator
Here’s a comprehensive table summarizing the key aspects of electron beam penetration depth:
| Aspect | Description |
|---|---|
| Definition | The maximum distance electrons can travel through a material before losing all their kinetic energy12 |
| Primary Factors | 1. Beam energy (E) 2. Atomic number of target material (Z) 3. Density of target material (ρ)1 |
| Kanaya-Okayama Formula | R = (0.0276 * A * E^n) / (Z * ρ^0.5) Where: R: Penetration depth (μm) A: Atomic weight E: Beam energy (keV) n: Empirical constant (~1.35 for E < 10 keV) Z: Atomic number ρ: Density (g/cm³)1 |
| Energy Dependence | Penetration depth increases with increasing beam energy1 |
| Material Dependence | Penetration depth decreases with increasing atomic number and density1 |
| Typical Range | From nanometers to micrometers, depending on beam energy and material2 |
| Applications | 1. Electron microscopy 2. Electron beam therapy 3. Spacecraft charging studies2 |
| Important Depths | 1. R90: 90% dose level (therapeutic range) 2. R50: 50% dose level 3. Rmax: Maximum range 4. Rp: Practical range3 |
| Limitations | 1. Scattering effects 2. Variations in actual penetration due to tortuous electron paths3 |
| Measurement Methods | 1. Continuous-Slow-Down-Approximation (CSDA) 2. Experimental data from ESTAR and IMFP databases2 |
This table provides a concise overview of the key aspects related to electron beam penetration depth, including its definition, calculation methods, influencing factors, and practical applications. The information is crucial for various fields, including materials science, medical physics, and space technology.