Manyalibo J. Matthews
Lawrence Livermore National Laboratory
222 Papers
774 Citations
Manyalibo J. Matthews is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Laser & Raman spectroscopy. The author has an hindex of 40, co-authored 199 publications. Previous affiliations of Manyalibo J. Matthews include Alcatel-Lucent & Massachusetts Institute of Technology.
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Papers
Monitoring annealing via CO(2) laser heating of defect populations on fused silica surfaces using photoluminescence microscopy.
TL;DR: The results indicate that the defect concentrations decrease significantly with increasing CO(2) laser exposure and are nearly eliminated when the peak surface temperature exceeds the softening point of fused silica (approximately 1900K), suggesting that this method might be suitable for in situ monitoring of repair of defective sites in fusedsilica optical components.
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Downstream intensification effects associated with CO2 laser mitigation of fused silica
Manyalibo J. Matthews,Isaac L. Bass,Gabriel M. Guss,C. Clay Widmayer,F. Ravizza +4 more
- 29 Oct 2007
TL;DR: In this article, the surface morphology, intensification patterns and damage associated with various CO-sub 2 mitigation treatments on fused silica surfaces were investigated. And the authors showed that two components of intensification pattern, one on-axis and another off-axis can lead to damage of downstream optics.
Para-h2 to ortho-h2 conversion in a full-scale automotive cryogenic pressurized hydrogen storage up to 345 bar
Guillaume Petitpas,Salvador M. Aceves,Manyalibo J. Matthews,J. R. Smith +3 more
- 21 Nov 2013
TL;DR: In this paper, the authors examined heat absorption from the transition between the two quantum states of the hydrogen molecule (para-ortho) in a full-scale (151 L internal volume) automotive cryogenic pressure vessel at pressures and temperatures up to 345 bar and 300 K, and densities between 14 and 67 g/L (2.1 − 10.1 kg H 2 ).
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Microcrack mitigation during laser scanning of tungsten via preheating and alloying strategies
TL;DR: In this article, the effect of preheating and alloying with 2.5% rare earth oxides on the cracking behavior in powderless single track and hatch strategy laser scans was investigated.
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Characterization of laser-induced plasmas associated with energetic laser cleaning of metal particles on fused silica surfaces
TL;DR: Time-resolved plasma emission spectroscopy was used to characterize the energy coupling and temperature rise associated with single, 10-ns pulsed laser ablation of metallic particles bound to transparent substrates.
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