Optical diagnosis and theoretical simulation of laser induced lead plasma spectrum
- College of Physics and Electronics, Shandong Normal University, Jinan 250014 (China)
Plasmas generated during incipient laser ablation of lead in air were studied using emission spectroscopy and fast photography by an intensified charge coupled device (ICCD) camera. An improved plasma emission model was introduced, invoking one-dimensional radiative transfer, to describe the observed emission spectra, while taking into account Gaussian intensity distribution of the laser used to form plasma. The effects of different parameters to the fitting results are discussed. The plasma temperature got by Saha-Boltzmann plot method and the electron number density got by line broadening method were compared with the fitting results. We also found that the distribution of plasma temperature is more uniform than that of the electron number density in the radial direction.
- OSTI ID:
- 22043608
- Journal Information:
- Physics of Plasmas, Vol. 19, Issue 1; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABLATION
CHARGE-COUPLED DEVICES
DENSITY
ELECTRON TEMPERATURE
ELECTRONS
EMISSION
EMISSION SPECTRA
EMISSION SPECTROSCOPY
GAUSS FUNCTION
ION TEMPERATURE
LASER RADIATION
LEAD IONS
LIGHT TRANSMISSION
LINE BROADENING
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA SIMULATION
RADIANT HEAT TRANSFER