title: [Study of the effect of heat source separation distance on plasma physical properties in laser-pulsed GMAW hybrid welding based on spectral diagnosis technique].
abstract: In the present paper, the authors calculated the plasma's peak electron temperatures under different heat source separation distance in laser- pulse GMAW hybrid welding based on Boltzmann spectrometry. Plasma's peak electron densities under the corresponding conditions were also calculated by using the Stark width of the plasma spectrum. Combined with high-speed photography, the effect of heat source separation distance on electron temperature and electron density was studied. The results show that with the increase in heat source separation distance, the electron temperatures and electron densities of laser plasma did not changed significantly. However, the electron temperatures of are plasma decreased, and the electron densities of are plasma first increased and then decreased.
authors.forename: Wei
authors.initials: W
authors.lastname: Liao
authors.forename: Xue-Ming
authors.initials: XM
authors.lastname: Hua
authors.forename: Wang
authors.initials: W
authors.lastname: Zhang
authors.forename: Fang
authors.initials: F
authors.lastname: Li