Soft X-ray laser observation of femtosecond-laser-driven ablation of tungsten
| Autor: | Masahiko Ishino, Yoshiaki Kato, Mitsuru Yamagiwa, Noboru Hasegawa, Masaharu Nishikino, Yoshihiro Ochi, Tetsuya Kawachi |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry medicine.medical_treatment Magnetic confinement fusion chemistry.chemical_element Pulse duration Tungsten Laser Ablation Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Interferometry Optics chemistry law Femtosecond medicine Irradiation Electrical and Electronic Engineering business |
| Zdroj: | Chinese Optics Letters. 13:070002-70004 |
| ISSN: | 1671-7694 |
| DOI: | 10.3788/col201513.070002 |
| Popis: | Ablation dynamics of tungsten irradiated with a 70 fs laser pulse is investigated with X-ray interferometry and X-ray imaging using a 13.9 nm soft X-ray laser of 7 ps pulse duration. The evolution of high-density ablation front of tungsten (i.e., W) is presented. The ablation front expands to ~120 nm above the original target surface at 160 ps after femtosecond-laser irradiation with an expansion speed of approximately 750 m/s. These results will provide important data for understanding ablation properties of W, which is a candidate material of the first wall of magnetic confinement fusion reactors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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