TY - JOUR
T1 - Expanded use of a fast photography technique to characterize laser-induced plasma plumes
AU - Valverde-Alva, M. A.
AU - García-Fernández, T.
AU - Diáz-Cortés, G.
AU - Sánchez-Llamazares, J. L.
AU - Rodríguez-González, E.
AU - Sánchez-Aké, C.
AU - Quintana-Nedelcos, A.
AU - Villagrán-Muniz, M.
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
KW - Digital image processing
KW - Fast photography
KW - Laser ablation
KW - Plasma diagnostics
KW - Plasma plume splitting
UR - http://www.scopus.com/inward/record.url?scp=84897403612&partnerID=8YFLogxK
M3 - Artículo
SN - 0035-001X
VL - 60
SP - 195
EP - 204
JO - Revista Mexicana de Fisica
JF - Revista Mexicana de Fisica
IS - 3
ER -