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Title: Laser ablation mass removal versus incident power density during solid sampling for inductively coupled plasma atomic emission spectroscopy

Abstract

For laser ablation solid sampling, the quantity of material ablated (removed) influences the sensitivity of chemical analysis. The mass removal rate depends strongly on the laser power density, which is the main controllable parameter for a given material and wavelength parameter using laser solid sampling for inductively coupled plasma atomic emission spectroscopy (ICP-AES). For a wide variety of materials, a decrease in the rate of change, or roll-off, in mass removed is observed with increasing incident laser power density. The roll-off results from a change in the efficiency of material removed by the laser beam, primarily due to shielding of the target from the incident laser energy by a laser-vapor plume interaction. Several analytical technologies were employed to study the quantity of mass removed versus laser power density. Data for mass ablation behavior versus laser power density are reported using ICP-AES, atomic emission from a laser-induced plasma near the sample surface, acoustic stress power in the target, and measurements of crater volumes. This research demonstrates that the change in ICP-AES intensity with laser power density is due to changes in the mass removal. The roll-off in mass ablation is not due to a change in particle size distribution of themore » ablated species, fractionation of the sample, or a change in transport efficiency to the ICP torch. 29 refs., 10 figs.« less

Authors:
; ; ; ;  [1]
  1. Lawrence Berkeley National Lab., CA (United States)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
171376
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Analytical Chemistry (Washington)
Additional Journal Information:
Journal Volume: 67; Journal Issue: 24; Other Information: PBD: 15 Dec 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 40 CHEMISTRY; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; GOLD; ABLATION; SOLIDS; SAMPLING; EMISSION SPECTROSCOPY; LASER RADIATION; QUANTITATIVE CHEMICAL ANALYSIS; PLASMA

Citation Formats

Shannon, M A, Mao, X L, Fernandez, A, Chan, W T, and Russo, R E. Laser ablation mass removal versus incident power density during solid sampling for inductively coupled plasma atomic emission spectroscopy. United States: N. p., 1995. Web. doi:10.1021/ac00120a015.
Shannon, M A, Mao, X L, Fernandez, A, Chan, W T, & Russo, R E. Laser ablation mass removal versus incident power density during solid sampling for inductively coupled plasma atomic emission spectroscopy. United States. https://doi.org/10.1021/ac00120a015
Shannon, M A, Mao, X L, Fernandez, A, Chan, W T, and Russo, R E. 1995. "Laser ablation mass removal versus incident power density during solid sampling for inductively coupled plasma atomic emission spectroscopy". United States. https://doi.org/10.1021/ac00120a015.
@article{osti_171376,
title = {Laser ablation mass removal versus incident power density during solid sampling for inductively coupled plasma atomic emission spectroscopy},
author = {Shannon, M A and Mao, X L and Fernandez, A and Chan, W T and Russo, R E},
abstractNote = {For laser ablation solid sampling, the quantity of material ablated (removed) influences the sensitivity of chemical analysis. The mass removal rate depends strongly on the laser power density, which is the main controllable parameter for a given material and wavelength parameter using laser solid sampling for inductively coupled plasma atomic emission spectroscopy (ICP-AES). For a wide variety of materials, a decrease in the rate of change, or roll-off, in mass removed is observed with increasing incident laser power density. The roll-off results from a change in the efficiency of material removed by the laser beam, primarily due to shielding of the target from the incident laser energy by a laser-vapor plume interaction. Several analytical technologies were employed to study the quantity of mass removed versus laser power density. Data for mass ablation behavior versus laser power density are reported using ICP-AES, atomic emission from a laser-induced plasma near the sample surface, acoustic stress power in the target, and measurements of crater volumes. This research demonstrates that the change in ICP-AES intensity with laser power density is due to changes in the mass removal. The roll-off in mass ablation is not due to a change in particle size distribution of the ablated species, fractionation of the sample, or a change in transport efficiency to the ICP torch. 29 refs., 10 figs.},
doi = {10.1021/ac00120a015},
url = {https://www.osti.gov/biblio/171376}, journal = {Analytical Chemistry (Washington)},
number = 24,
volume = 67,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 1995},
month = {Fri Dec 15 00:00:00 EST 1995}
}