Determination of Transition Probabilities of some Sb III Lines by Time Resolved Spectrometry of Laser Produced Plasmas

Abstract

Experimental transition probabilities for 26 lines with origin in the 5s 2 (6p, 6f, 6d, 7s and 5g) con¢guration of Sb III have been determined. Branching ratios have been obtained from measurements of emission-line intensities in an optically thin laser-produced plasma. Calculations with intermediate coupling using Hartree ^Fock wavefunctions and multicon¢guration mixing have been carried out to place the experimental data on an absolute scale by using lifetime values. Comparison between scarce previously published data and present experimental and calculated values has been made.

Laser-induced breakdown spectroscopy for branching ratio and atomic lifetime measurements in singly-ionized neodymium and gallium

“…At pressures outside of this range the A-coefficients deviated further from reported values. This result (sub-10 mbar useful pressures) is entirely consistent with previous measurements of branching ratios using laser-induced plasmas [13,15,17,18]. Due to the large atomic similarity of the lanthanides (atomic mass, electron energy-level structure, nuclear structure, etc.…”

“…Later, Rojas et al measured Sb III branching ratios in laser-induced plasmas. [15] In 2001, Biémont et al studied atomic lifetimes in eight energy levels of Pr III which previously had never been determined [16]. In 2005, Campos et al used a laser-produced plasma as a source of Ag ions to study atomic transitions in Ag II.…”

Laser-Induced Breakdown Spectroscopy for Determination of Spectral Fundamental Parameters

“…In the same year, transition probabilities for 26 lines with origin from the 5s 2 (6p, 6f, 6d, 7s and 5g) configurations of Sb III were determined by Rojas et al [108]. They used the branching ratios method and put the data on an absolute scale using calculated lifetimes and lines strengths.…”

Stark broadening in the Sb III spectrum

“…Transitions, wavelengths (λ) and upper energy levels (E u ) are taken from [9,[24][25][26][27]. W D denotes calculated Doppler width at a given T .…”