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Title: Revisiting the interplay between ablation, collisional, and radiative processes during ns-laser ablation

A study of ns-laser ablation is presented, which focuses on the transient behavior of the physical processes that act in and above a copper sample. A dimensionless multiphase collisional radiative model describes the interplay between the ablation, collisional, and radiative mechanisms. Calculations are done for a 6 ns-Nd:YAG laser pulse operating at 532 nm and fluences up to 15 J/cm{sup 2}. Temporal intensity profiles as well as transmissivities are in good agreement with experimental results. It is found that volumetric ablation mechanisms and photo-processes both play an essential role in the onset of ns-laser induced breakdown.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ;  [5] ;  [1]
  1. Department of Physics and OPTIMAS Research Center, TU Kaiserslautern, 67653 Kaiserslautern (Germany)
  2. (Belgium)
  3. Federal Institute for Materials Research and Testing - BAM, 12489 Berlin (Germany)
  4. Department of Mathematics, University of Tennessee, Knoxville, Tennessee 37996-1320 (United States)
  5. Department of Chemistry, University of Antwerp, 2610 Wilrijk (Belgium)
Publication Date:
OSTI Identifier:
22217899
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 17; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABLATION; BREAKDOWN; COPPER; NEODYMIUM LASERS; PULSES; TRANSIENTS