Erratum to: Femtosecond pulse laser ablation of chromium: experimental results and two-temperature model simulations
| Autor: | Masoud Kavosh Tehrani, Abdollah Eslami Majd, M. Saghebfar, Seyyed Mohammad Reza Darbani |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Thermal equilibrium Materials science Laser ablation medicine.medical_treatment Physics::Medical Physics Analytical chemistry 02 engineering and technology General Chemistry Electron 021001 nanoscience & nanotechnology Ablation Laser 01 natural sciences Fluence law.invention law Picosecond 0103 physical sciences medicine General Materials Science Irradiation Atomic physics 0210 nano-technology |
| Zdroj: | Applied Physics A. 123 |
| ISSN: | 1432-0630 0947-8396 |
| Popis: | In this work, the results of experimental and computational single- and multi-shot ablation threshold and the incubation effect of chromium metal sample, irradiated by ultrashort laser pulses, are presented. The experimental value of the ablation threshold is determined based on $$D^{2}$$ method by measuring the outer ablation crater diameters as a function of incident laser pulse energy using $$800 \, \mathrm{nm}, 30 \, \mathrm{fs},$$ laser pulses. The value of $$0.19 \pm 0.04 \, (\mathrm{J/cm}^{2} )$$ , is obtained for the single-shot ablation threshold fluence. The experimental results are compared with time-dependent heat flow calculations based on the two-temperature model and the effect of number and separation time of two consecutive laser pulses with the same total fluence is studied for the Cr target. Moreover, the role of pulse width and absorbed fluence in thermal equilibrium time between electrons and lattice is investigated in two-temperature model. The thermal equilibrium between electron and lattice is established after a few picoseconds for low fluences and after a few tens of picoseconds at higher fluences. |
| Databáze: | OpenAIRE |
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