The influence of processing parameters on X-ray emission during ultra-short pulse laser machining
| Autor: | Christoph Schwanke, Jörg Krüger, Herbert Legall, Jörn Bonse |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science business.industry Pulse (signal processing) Astrophysics::High Energy Astrophysical Phenomena X-ray Pulse duration 02 engineering and technology General Chemistry Radiation 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention Wavelength Optics Machining law 0103 physical sciences General Materials Science Radiation protection 0210 nano-technology business |
| Zdroj: | Applied Physics A. 125 |
| ISSN: | 1432-0630 0947-8396 |
| DOI: | 10.1007/s00339-019-2827-y |
| Popis: | During ultra-short laser material processing at high laser pulse repetition rates unwanted X-ray radiation can be generated in a quantity that may constitute a potential risk for health. An adequate X-ray radiation protection requires a thoroughly understanding of the influence of the laser processing parameters on the generation of X-ray radiation. In the present work, the generated X-ray dose during laser machining was investigated in air for varying beam scanning conditions at a pulse duration of 925 fs, a center wavelength of 1030 nm and a laser peak intensity of 2.6 × 1014 W/cm2. The X-ray radiation dose and the corresponding spectral X-ray emission were investigated in dependence on the laser’s pulse repetition rate and on the beam scanning speed. The results show a strong dependence of the X-ray emission on these laser processing parameters. |
| Databáze: | OpenAIRE |
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