Data/hora: 06/06/2024 12:01:54

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 01/09/2017
Data da última atualização: | 07/11/2018
Autoria: | NICOLODELLI, G.; SENESI, G. S.; RANULFI, A. C.; MARANGONI, B. S.; WATANABE, A.; BENITES, V. de M.; OLIVEIRA, P. P. A.; BOAS, P. R. V.; MILORI, D. M. B. P.
Afiliação: | Gustavo Nicolodelli, Bolsista/Embrapa Instrumentação; Giorgio Saverio Senesi, CNR Nanotec; Anielle Coelho Ranulfi, Bolsista/Embrapa Instrumentação; Bruno Spolon Marangoni, UFMS; Alex Watanabe, Bolsista/Embrapa Instrumentação; VINICIUS DE MELO BENITES, CNPS; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; PAULINO RIBEIRO VILLAS BOAS, CNPDIA; Débora Marcondes Bastos Pereira Milori, Bolsista/Embrapa Instrumentação.
Título: | Double-pulse laser induced breakdown spectroscopy in orthogonal beam geometry to enhance line emission intensity from agricultural samples.
Ano de publicação: | 2017
Fonte/Imprenta: | Microchemical Journal, v. 133, p. 272-278, 2017.
DOI: | https://doi.org/10.1016/j.microc.2017.03.047
Idioma: | Inglês
Conteúdo: | A soil, a plant and a fertilizer sample were investigated by double-pulse (DP) laser-induced breakdown spectroscopy (LIBS) in orthogonal beam geometry using a reheating configuration. The DP-LIBS signal enhancement was evaluated with respect to the corresponding single-pulse (SP) LIBS as a function of the interpulse delay at various ablation energies. The maximum signal enhancement measured was 155-fold when low ablation energy (4 mJ) and an interpulse delay of 10 &#956;s were used. At high laser energies (&#8805;16 mJ) and interpulse delay of 0.6 &#956;s, the maximum signal enhancement was up to 3-fold. The effect of excitation energies and interpulse delays on emission line intensities was discussed in the various conditions used. The emission line enhancement measured for ionic lines was always higher than that of atomic lines. Plasma excitation temperature and electron density measured as a function of interpulse delays at various ablation energies were shown to be related to the emission line intensities.
Palavras-Chave: | Ablative energy; DP LIBS analysis; Orthogonal geometry.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (24094-1) - UPC - AP - DD - PROCI-2017.00034 - NIC - 2017.00162 - DIS