Abstract
In neutral zinc the 4p 2 configuration lies above the 3d 104s ionization limit and its levels become perturbers in the continuum. Lines have been identified in the Zn I spectrum for the \(4s4p\,{^3P}^{\circ} - 4p^{2}\,{^3P}\) multiplet, whereas no lines have been found for transitions to 4p 2 1 D or 1 S. In this paper, cross sections for photoionization from 4s4p levels are reported that reveal the positions and widths of the 4p 2 resonances. Calculations were performed using the multiconfiguration Hartree-Fock (MCHF) and B-spline R-matrix (BSR) method. Results from Breit–Pauli calculations that ignore the background continua are also presented. Included in the latter are energies for the \(4s^2\,{^1S}_{0}, 4s4p\,{^1P}_{1}^{\circ}, {^3P}^{\circ}_{1,2,3}, 4s4d\,{^1D}_{2}, 4p^2\, {^3P}_{1,2,3}, {^1D}_{2}\,{\rm and}\,{^1S}_{0}\) levels and transition data (transition energies, line strengths, f-values, and A-rates) for all E1 transitions between these levels. Transition energies and the agreement in the length and velocity values, particularly for allowed transitions, indicate the accuracy of the computational model. Line widths are compared with other estimates.
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Froese Fischer, C., Zatsarinny, O. 4p 2 resonances in photoionization from 4s4p levels in neutral zinc. Theor Chem Account 118, 623–630 (2007). https://doi.org/10.1007/s00214-007-0348-9
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DOI: https://doi.org/10.1007/s00214-007-0348-9