Ser Cortes - Academia.edu (original) (raw)

Address: Guanajuato, Guanajuato, Mexico

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Papers by Ser Cortes

Research paper thumbnail of Laser Ablation Studies of Deposited Silver Colloids Active in SERS

Laser Chemistry, 2002

Laser ablation of deposited silver colloids, active in SERS, is carried out at three different la... more Laser ablation of deposited silver colloids, active in SERS, is carried out at three different laser wavelengths (KrF, XeCl and Nd:YAG at l ¼ 248, 308 and 532 nm respectively). Emission form excited neutral Ag and Na atoms, present in the ablation plume, is detected with spectral and temporal resolution. The expansion velocity of Ag in the plume is estimated in $ 1 Â 10 4 m s À1 . Low-fluence laser ablation of the colloids yields ionized species that are analyzed by time-of-flight mass spectroscopy. Na þ and Ag n þ ðn 3Þ are observed. Composition of the mass spectra and widths of the mass peaks are found to be dependent on laser wavelength, suggesting that the dominant ablation mechanisms are different at the different wavelenghts.

Research paper thumbnail of SEP SES INSTITUTO TECNOLÓGICO DE LEÓN INGENIERÍA ELECTROMECÁNICA

Es de suma importancia al inicio del curso especificar el reglamento del laboratorio.

Research paper thumbnail of Laser Ablation Studies of Deposited Silver Colloids Active in SERS

Laser Chemistry, 2002

Laser ablation of deposited silver colloids, active in SERS, is carried out at three different la... more Laser ablation of deposited silver colloids, active in SERS, is carried out at three different laser wavelengths (KrF, XeCl and Nd:YAG at l ¼ 248, 308 and 532 nm respectively). Emission form excited neutral Ag and Na atoms, present in the ablation plume, is detected with spectral and temporal resolution. The expansion velocity of Ag in the plume is estimated in $ 1 Â 10 4 m s À1 . Low-fluence laser ablation of the colloids yields ionized species that are analyzed by time-of-flight mass spectroscopy. Na þ and Ag n þ ðn 3Þ are observed. Composition of the mass spectra and widths of the mass peaks are found to be dependent on laser wavelength, suggesting that the dominant ablation mechanisms are different at the different wavelenghts.

Research paper thumbnail of SEP SES INSTITUTO TECNOLÓGICO DE LEÓN INGENIERÍA ELECTROMECÁNICA

Es de suma importancia al inicio del curso especificar el reglamento del laboratorio.

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