Computational study of nanosecond pulsed laser ablation and the application to momentum coupling

Journal Article · Sun Jul 15 04:00:00 EDT 2012 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4737188· OSTI ID:22089333

Hong, Yuan; Huifeng, Tong; Mu, Li; Chengwei, Sun ^[1]

---

1. Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-113, Mianyang, Sichuan 621900 (China)

During the evaporation and ablation of a matter induced by intensive laser radiation, the vapor plasma is ejected from the surface of the target which induces the recoil pressure and impulse in the target. Impulse coupling of laser beams with matter has been extensively studied as the basis of laser propulsion and laser clearing space debris. A one-dimensional (1D) bulk absorption model to simulate the solid target ablated directly by the laser beam is presented; numerical calculation of impulse acting on the target in vacuum with different laser parameters is performed with fluid dynamics theory and 1D Lagrange difference scheme. The calculated results of the impulse coupling coefficients are in good agreement with the experimental results and Phipps' empirical value. The simulated results show that the mechanical coupling coefficients decrease with the increment of laser intensity when the laser pulses generate plasma. The present model can be applied when the laser intensity is 10{sup 8} - 10{sup 10} W/cm{sup 2}, which will provide a guide to the study of momentum coupling of laser beams with matter.

• OSTI ID: 22089333
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 2 Vol. 112; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABLATION
BEAMS
COUPLING
EQUATIONS
EVAPORATION
FLUID MECHANICS
LASER RADIATION
LIGHT TRANSMISSION
LINEAR ABSORPTION MODELS
PLASMA PRODUCTION
PLASMA SIMULATION
PULSES
SOLIDS
SURFACES