论文部分内容阅读
The spectral emission and plasma parameters of SnO_2 plasmas have been investigated.A planar ceramic SnO_2 target was irradiated by a CO2 laser with a full width at half maximum of 80 ns.The temporal behavior of the specific emission lines from the SnO_2 plasma was characterized.The intensities of Sn I and Sn II lines first increased,and then decreased with the delay time.The results also showed a faster decay of Sn I atoms than that of Sn II ionic species.The temporal evolutions of the SnO_2 plasma parameters(electron temperature and density) were deduced.The measured temperature and density of SnO_2 plasma are 4.38 eV to0.5 eV and 11.38×10~(17) cm~(-3) to 1.1×10~(17) cm~(-3),for delay times between 0.1 μs and 2.2 μs.We also investigated the effect of the laser pulse energy on SnO_2 plasma.
The spectral emission and plasma parameters of SnO 2 plasmas have been investigated. A planar ceramic SnO 2 target was irradiated by a CO 2 laser with a full width at half maximum of 80 ns.The temporal behavior of the specific emission lines from the SnO 2 plasma was characterized. The intensities of Sn I and Sn II lines first increased, and then decreased with the delay time. The results also showed a faster decay of Sn I atoms than that of Sn II ionic species. The temporal evolutions of the SnO 2 plasma parameters (electron temperature and density of the measured temperature and density of SnO 2 plasma are 4.38 eV to 0.5 eV and 11.38 × 10 17 cm -3 to 1.1 × 10 17 cm -3, for delay times between 0.1 μs and 2.2 μs.We also investigated the effect of the laser pulse energy on SnO 2 plasma.