Abstract
In the present work, we present the spatial evolution of the Slaked lime Ca(OH)2 plasma generated by the first harmonic (1064nm) and second (532nm) harmonics of a Q-switched Nd:YAG laser. The experimentally observed line profiles of five neutral calcium (Ca I) lines at 601.59nm correspond to 4p6s 1P1→4s6d 1D2 transition, 607.62nm to 4p6s 3P1→3d 3P0, 634.46nm to 3d9p 3D1→4s6d 3D2, 659.42nm to 3d8p 3P1→4s6d 1D2 and at 712.17nm to 4p4d 1P1→3d 3P2 respectively have been used to extract the electron temperature through Boltzmann plot method, whereas, the electron number density has been determined from the Stark broadening. Besides, we have studied the variation of electron temperature and electron number density as a function of laser irradiance at atmospheric pressure. The electron temperature and electron number density have also been calculated as a function of distance from the target surface.
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