| Revista: | Revista mexicana de física |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000378299 |
| ISSN: | 0035-001X |
| Autores: | Valverde Alva, M.A1 García Fernández, T2 Díaz Cortés, G1 Sánchez Llamazares, J.L3 Rodríguez González, E4 Sanchez Ake, C5 Quintana Nedelcos, A3 Villagrán Múñiz, Mayo5 |
| Instituciones: | 1Universidad Nacional Autónoma de México, Posgrado en Ciencia e Ingeniería de Materiales, México, Distrito Federal. México 2Universidad Autónoma de la Ciudad de México, México, Distrito Federal. México 3Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí. México 4Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, México, Distrito Federal. México 5Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico, México, Distrito Federal. México |
| Año: | 2014 |
| Periodo: | May-Jun |
| Volumen: | 60 |
| Número: | 3 |
| Paginación: | 195-204 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, teórico |
| Resumen en inglés | Expanded use of fast photography is proposed to characterize laser ablation plasma plumes by the analysis of a set of photographs by means of appropriate mathematical algorithms. The laser ablation plasma plumes studied were generated by ablation of both a multicomponent target of the nominal composition Ni50Mn37Sn13 and a highly pure Cu target (Cu) using a Q-switched Nd-YAG laser system. The experiments were conducted under different background argon pressures. Several photograph parameters such as intensity per unit time of exposure for a pixel, mean intensity per pixel per unit time of exposure, integrated intensity and cross correlation were studied. The intensity per unit time of exposure allowed for identification of the fast component of the triple structure of the expanding plasma into the background gas (that travels at a speed close to the one measured in vacuum). This parameter together with the use of cross correlation enabled the identification of regions of the expanded plasma plume with higher and lower similarities in their optical emission behavior. The mean intensity per pixel per unit time of exposure can be used as a measurement of the amount of light emitted by the plume as a function of time |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Teoría cinética y plasmas, Diagnóstico de plasmas, Ablación láser, Procesamiento digital de imágenes, Fotografía rápida |
| Keyword: | Physics and astronomy, Kinetic theory and plasma, Plasma diagnostic, Laser ablation, Digital image processing, Fast photography |
| Texto completo: | Texto completo (Ver PDF) |
