Particle generation by laser ablation during surface decontamination

Doh Won Lee; Meng Dawn Cheng

doi:10.1016/S0021-8502(04)00300-3

Particle generation by laser ablation during surface decontamination

Doh Won Lee, Meng Dawn Cheng

Environmental Risk and Energy Analysis

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Laser ablation allows significant number of particles to be generated from the surfaces of cement, chromium-embedded cement, stainless steel, or alumina. The number concentrations and size distributions of the particles were experimentally investigated with respect to applied laser fluence (mJ cm ^-2) and wavelength. Based on the measurements, 266-nm laser ablation generates particles most efficiently. Of the three materials tested, cement was the most favorable for material removal, stainless steel was the next, and alumina was the least. The removal of particles from chromium-embedded cement by 532- and 1064-nm-wavelength lasers was less effective than from stainless steel, but more effective than from alumina. For ablation with a 266-nm laser, chromium enhanced the removal above 20 J cm^-2. Comparisons of other characteristics such as the size and removal rate of these particles are also discussed in this paper.

Original language	English
Pages (from-to)	1527-1540
Number of pages	14
Journal	Journal of Aerosol Science
Volume	35
Issue number	12
DOIs	https://doi.org/10.1016/S0021-8502(04)00300-3
State	Published - Dec 2004

Funding

This work was performed by researchers at Oak Ridge National Laboratory (ORNL) for a project funded by the U.S. Department of Energy, Office of Science, Biological and Environmental Research Program, Environmental Science Management Program (EMSP Project # 82,807). ORNL is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. D.-W. Lee was supported in part by an appointment to the ORNL Postdoctoral Research Associates Program, administered jointly by ORNL and the Oak Ridge Institute for Science and Education. Dr. Baohua Gu of the Environmental Sciences Division at ORNL is acknowledged for providing and preparing the samples used in this study. The authors thank Dr. Da-Ren Chen in the Department of Mechanical Engineering, Washington University, St. Louis, MO, for useful discussions on our experiments.

Keywords

Alumina
Cement
Chromium-embedded cement
Laser ablation
Nanoparticle
Stainless steel

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10.1016/S0021-8502(04)00300-3

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abstract = "Laser ablation allows significant number of particles to be generated from the surfaces of cement, chromium-embedded cement, stainless steel, or alumina. The number concentrations and size distributions of the particles were experimentally investigated with respect to applied laser fluence (mJ cm -2) and wavelength. Based on the measurements, 266-nm laser ablation generates particles most efficiently. Of the three materials tested, cement was the most favorable for material removal, stainless steel was the next, and alumina was the least. The removal of particles from chromium-embedded cement by 532- and 1064-nm-wavelength lasers was less effective than from stainless steel, but more effective than from alumina. For ablation with a 266-nm laser, chromium enhanced the removal above 20 J cm-2. Comparisons of other characteristics such as the size and removal rate of these particles are also discussed in this paper.",

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AB - Laser ablation allows significant number of particles to be generated from the surfaces of cement, chromium-embedded cement, stainless steel, or alumina. The number concentrations and size distributions of the particles were experimentally investigated with respect to applied laser fluence (mJ cm -2) and wavelength. Based on the measurements, 266-nm laser ablation generates particles most efficiently. Of the three materials tested, cement was the most favorable for material removal, stainless steel was the next, and alumina was the least. The removal of particles from chromium-embedded cement by 532- and 1064-nm-wavelength lasers was less effective than from stainless steel, but more effective than from alumina. For ablation with a 266-nm laser, chromium enhanced the removal above 20 J cm-2. Comparisons of other characteristics such as the size and removal rate of these particles are also discussed in this paper.

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Particle generation by laser ablation during surface decontamination

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