Details:

Alternative Title:
J Appl Phys
Publisher's site:
http://dx.doi.org/10.1063/1.4812491
Personal Author:
LaHaye, N. L. ; Harilal, S. S. ; Diwakar, P. K. ; Hassanein, A. ; Kulkarni, P.
LaHaye, N. L. ; Harilal, S. S. ; Diwakar, P. K. ; Hassanein, A. ; Kulkarni, P. Less -
Description:
We investigated the role of femtosecond (fs) laser wavelength on laser ablation (LA) and its relation to laser generated aerosol counts and particle distribution, inductively coupled plasma-mass spectrometry (ICP-MS) signal intensity, detection limits, and elemental fractionation. Four different NIST standard reference materials (610, 613, 615, and 616) were ablated using 400 nm and 800 nm fs laser pulses to study the effect of wavelength on laser ablation rate, accuracy, precision, and fractionation. Our results show that the detection limits are lower for 400 nm laser excitation than 800 nm laser excitation at lower laser energies but approximately equal at higher energies. Ablation threshold was also found to be lower for 400 nm than 800 nm laser excitation. Particle size distributions are very similar for 400 nm and 800 nm wavelengths; however, they differ significantly in counts at similar laser fluence levels. This study concludes that 400 nm LA is more beneficial for sample introduction in ICP-MS, particularly when lower laser energies are to be used for ablation.
Subjects:
[+]
Article
Source:
J Appl Phys. 2013.
Pubmed ID:
26640294
Pubmed Central ID:
PMC4668957
Document Type:
Journal Article
Funding:
CC999999/ImCDC/Intramural CDC HHS/United States
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:8aa3bda4ce8e13cd2c9fb65584e0dd8f5995f8333e3b5e4e2ce8db67432949bb
Download URL:
https://stacks.cdc.gov/view/cdc/36749/cdc_36749_DS1.pdf
File Type:

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