title: Spatially selective excitation in laser-induced breakdown spectroscopy combined with laser-induced fluorescence.
abstract: Spatially selective excitation was proposed to improve excitation efficiency in laser-induced breakdown spectroscopy combined with laser-induced fluorescence (LIBS-LIF). Taking chromium (Cr) and nickel (Ni) elements in steels as examples, it was discovered that the optimal excitation locations were the center of the plasmas for the matrix of the iron (Fe) element but the periphery for Cr and Ni elements. By focusing an excitation laser at the optimal locations, not only excitation efficiency but also the analytical accuracy and sensitivity of quantitative LIBS-LIF were better than those with excitation at the plasma center in conventional LIBS-LIF. This study provides an effective way to improve LIBS-LIF analytical performance.
authors.forename: Jiaming
authors.initials: J
authors.lastname: Li
authors.forename: Zhongqi
authors.initials: Z
authors.lastname: Hao
authors.forename: Nan
authors.initials: N
authors.lastname: Zhao
authors.forename: Ran
authors.initials: R
authors.lastname: Zhou
authors.forename: Rongxing
authors.initials: R
authors.lastname: Yi
authors.forename: Shisong
authors.initials: S
authors.lastname: Tang
authors.forename: Lianbo
authors.initials: L
authors.lastname: Guo
authors.forename: Xiangyou
authors.initials: X
authors.lastname: Li
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Zeng
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Lu