Experimental and theoretical investigation of radiative lifetimes in neutral gallium |
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Authors: | J Carlsson H Lundberg W X Peng A Persson C G Wahlström T Brage C Froese Fischer |
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Institution: | 1. Department of Physics, Lund Institute of Technology, Lund, Sweden 3. Argonne National Laboratory, Argonne, Illinois, USA
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Abstract: | Using laser spectroscopic techniques the natural radiative lifetimes of 4s 2 n 1 s 2 S and 4s 2 n 2 d 2 D states of neutral gallium have been measured forn 1 = 6 to 11 andn 2 = 4 to 9. These states, as well as previously measured4s 2 np 2 P states, have been investigated theoretically using multi-configuration Hartree-Fock calculations. Oscillator strengths to all lower-lying states have been calculated and theoretical lifetimes of the investigated states evaluated. The2 D sequence is strongly influenced by the 4s4p 2 2 D perturber, and strong cancellation effects in the radiative decay are observed both theoretically and experimentally. |
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