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Pulse width dependent dynamics of laser-induced plasma from a Ni thin film
| Content Provider | Scilit |
|---|---|
| Author | Thomas, Jinto Joshi, Hem Chandra Kumar, Ajai Philip, Reji |
| Copyright Year | 2019 |
| Description | Journal: Journal of Physics D: Applied Physics Plasma plume formation and its expansion in the background gas are investigated in a 50 nm thick Ni thin film under the rear ablation/laser blow-off (LBO) geometry, employing 10 ns, 200 ps and 100 fs laser pulses respectively. Plume directionality, splitting and expansion are found to depend on the laser pulse width, and the expansion behavior is explained by appropriate models. In the case of fs ablation the plume shows a linear expansion at lower background pressures, while at higher pressures the expansion appears to show shock wave like nature. For ps ablation the expansion appears to follow a blast wave model at lower pressures, which, however, fits with drag model at higher pressures. In case of ns ablation, shock wave like nature is observed for all the pressures. Further, we believe the present study may have potential implications in pulsed laser deposition, ultra fast laser based nano particle generation and micro-machining. |
| Related Links | http://iopscience.iop.org/article/10.1088/1361-6463/aaff43/pdf |
| ISSN | 00223727 |
| e-ISSN | 13616463 |
| DOI | 10.1088/1361-6463/aaff43 |
| Journal | Journal of Physics D: Applied Physics |
| Issue Number | 13 |
| Volume Number | 52 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2019-01-16 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics D: Applied Physics Applied Physics Laser Pulse |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Acoustics and Ultrasonics Condensed Matter Physics Electronic, Optical and Magnetic Materials |
