Plasma properties of 355 nm and 532 nm laser-ablated molybdenum target at atmospheric pressure

Sternberg, E. M. A.; Rodrigues, N. A. S.; Amorim, J.; Sbampato, Maria Esther

doi:10.1088/1742-6596/370/1/012052

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…4) shows the variation in the electron temperature with the distance. The temperature has a maximum at the center of the plume and is minimum at the ends because of recombination and cooling of the plasma., the result is in agreement with the data reported in a previous study [23]. When the plasma expands, it thermalizes by transferring the energy to its surroundings.…”

Section: Measurement Of Plasma Temperaturesupporting

confidence: 93%

Spectroscopy Measurements of Laser-Induced Molybdenum Plasma

Abdrabou

Khedr

Fathi

et al. 2018

Arab Journal of Nuclear Sciences and Applications

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Molybdenum plasma in air at atmospheric pressure was carried out by utilizing Nd-YAG laser at fundamental wavelength 1064 nm, 0.206 mJ input energy, 5 ns pulse duration and repetition rate 10 Hz. After plasma formation, the optical fiber was used to collect plasma emission. The spectral analysis was displayed in the Local Thermal Equilibrium (LTE) state. Electron temperature was estimated by Boltzmann plot method and electron density was calculated from Stark broadening and compared with electron density of Hα-line at 656.3 nm which has reliable values. The temperature of plasma and density were evaluated for different positions along the expansion axis. The influence of the input power on plasma was studied. The electron density varied from 5 ×10 18 to 3.5×10 19 cm -3 . These parameters are important in environmental and industrial application. At distance of 10 mm from the target, the electron temperature has a minimum value while the electron density shows a maximum value.

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Section: Measurement Of Plasma Temperaturesupporting

confidence: 93%

Spectroscopy Measurements of Laser-Induced Molybdenum Plasma

Abdrabou

Khedr

Fathi

et al. 2018

Arab Journal of Nuclear Sciences and Applications

View full text Add to dashboard Cite

show abstract

“…A preliminary step to implement the suggested method is the generation and characterization of a laser-ablated plasma plume. Laser induced breakdown spectroscopy of molybdenum can determine expansion speed and lifetime [4] after laser pulse of plasma jet, the portion of neutral and ionized species which constitutes the plasma, electronic population distribution [5], dynamics of plume expansion [4], electron density, temperature and electron impact width parameter [6].…”

Section: Introductionmentioning

confidence: 99%